不及格的程序员-八神: Asp .NET

ASP.NET 分布式高级编程

Fri, 23 May 2008 00:46:51 GMT

星期五天气:晴很热

.net 中的分布式事务编程方法

在上一篇中我写下了,几个名词解释;
MTS:微软事务服务器,这里是一个运行环境,支持着事务的各种特性.
MS DTC: 事务服务器中的核心-事务协调器,事务的产生就是从这里调用相应API返回的.

从最早的.net 1.1中,如果要实现分布的事务,我想只能用COM+的服务组件方式了:

using System.EnterpriseServices;

[Transaction]

public class Product : ServicedComponent
{
  [AutoComplete]
  public void InsertProduct()
  {
    /*与其他服务组件和源管理器交互*/
  }
}

在.net 2.0中,我有两种方法了,加上上面的就是三种.

1. 不通过服务组件使用事务,需要WinXP SP2或Win Server 2003:

ServiceConfig config = new ServiceConfig(); 
config.Transaction = TransactionOption.Required;
//... 开始事务代码
ServiceDomain.Enter(config);
/*这里具体做些什么随便*/
// 结束事务代码
TransactionStatus status = ServiceDomain.Leave(); 

2. 使用事务范围做可提升的事务,需要SQL Server 2005以上版本

using (TransactionScope scope = new TransactionScope())
{
    /*这里具体做些什么随便
    可用于多个数据库链接操作 
    */
}


附加:

灵活的控制事务:

    CommittableTransaction trans = new CommittableTransaction();

    try
    {
      using (SqlConnection connection = new SqlConnection("..."))
      {
        string sql = "...";
        // 打开连接，在事务范围中登记此连接
        connection.Open();
        SqlCommand command = new SqlCommand(sql, connection);
        //在当前事务的范围中登记事务
        connection.EnlistTransaction(trans);
        command.ExecuteNonQuery();
        // 如果每一个执行都成功，则提交事务
        trans.Commit();
      }      
    }
    catch (Exception ex)
    {
      // 如果出现异常，则回滚事务
      trans.Rollback();
    }

ASP.NET中的自动化事务: 
<%@ Page Transaction="Required" %>

void Page_Load(object sender, System.EventArgs e)
{
	AbortTransaction += new System.EventHandler(AbortTransactionEvent); 
	CommitTransaction += new System.EventHandler(CommitTransactionEvent); 
	try
	{
	  /* 在这里放置事务性代码 */
	  ContextUtil.SetComplete();
	}
	catch(Exception)
	{
	  ContextUtil.SetAbort();
	}
}

void AbortTransactionEvent(object sender,System.EventArgs e)
{
  /*用于回滚行为的代码*/
}
void CommitTransactionEvent(object sender,System.EventArgs e)
{
  /*用于提交行为的代码*/
}

GDI+ 中发生一般性错误

Tue, 20 May 2008 08:39:10 GMT

星期二天气：晴

private void btnWriteImage_Click(object sender, EventArgs e)
		{
			string strImageFormat = "image/png";
			Response.AppendHeader("Cache-Control", "no-cache");
			Response.AppendHeader("Pragma", "no-cache");
			Response.AppendHeader("Content-Type", strImageFormat);
			Response.Clear();
			using (Bitmap image = new Bitmap(600, 200))
			{
				Pen blackPen = new Pen(Color.FromArgb(0x97, 0x97, 0xbc), 1f);
				float fSize = float.Parse(this.cboFontSize.SelectedItem.Text);
				Font font = new Font(this.cboFonts.SelectedItem.Text, fSize);
				using (Graphics g = Graphics.FromImage(image))
				{
					g.TextRenderingHint = TextRenderingHint.AntiAlias;
					g.Clear(Color.FromArgb(0xff, 0xff, 0xff));
					//g.DrawRectangle(blackPen, 0, 0, 0x12b, 0xc7);
					System.Text.StringBuilder strValue = new System.Text.StringBuilder(this.txtMaxim.Text);
					g.TextRenderingHint = TextRenderingHint.ClearTypeGridFit;
					g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
					g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;					
					int i=0;
					System.IO.StringReader strReader = new System.IO.StringReader(strValue.ToString());
					string temp;
					while((temp = strReader.ReadLine()) != null)
					{
						g.DrawString(temp, font, Brushes.Black, new PointF(1f, i*fSize+ i*fSize/2));
						i++;
					}
				}
				ImageCodecInfo myImageCodecInfo = GetEncoderInfo(strImageFormat);				
				Encoder myEncoder = Encoder.Quality;				
				EncoderParameters myEncoderParameters = new EncoderParameters(1);				
				EncoderParameter myEncoderParameter = new EncoderParameter(myEncoder, 100L);
				myEncoderParameters.Param[0] = myEncoderParameter;
                                //这里会引发错误，如果指定一个文件路径的话就可以，可能是不扶持HTTP协议				
                                image.Save(this.Response.OutputStream, myImageCodecInfo, myEncoderParameters);
			}
		}

		private ImageCodecInfo GetEncoderInfo(String mimeType)
		{
			int j;
			ImageCodecInfo[] encoders = ImageCodecInfo.GetImageEncoders();
			for(j = 0; j < encoders.Length; ++j)
			{
				if(encoders[j].MimeType.ToLower() == mimeType.ToLower())
					return encoders[j];
			}
			return null;
		}

LINQ 媚力

Sun, 04 May 2008 02:28:10 GMT

星期日, 天气:阵雨

节后的第一天上班居然是星期日不爽

在5.1节日里用了很多的时间去了解LINQ, 在C# 3.0中加入的这项新技术,真的让我眼前一亮.

用它去编码真的是非常酷的一件事, 通常情况下用很多代码才能实现的功能,而它却只用一行表达式就可以搞定.

例如:

数据的排序
过滤
数据库映射

等等它的功能还等待着程序员去挖觉.

视图状态与控件创建层次

Tue, 04 Mar 2008 06:28:25 GMT

星期二天气:晴大风

最近在编写DataGrid控件,研究子控件们如何存取它们的视图状态

最后发现视图状态同样的分层次,它们和控件的层次一一对应.

就是说页面上的父控件,是一层一层存的视图状态.

同时回发时,又一层一层读回来,在分配给各个子控件,分别调用它们的LoadViewState.

VS 2008 故障

Fri, 29 Feb 2008 03:03:04 GMT

星期五天气:晴

这些天发现2008无论打开什么项目之后,界面都不响应

今天仔细研究发现它起动了一个内部进程,

运行 C:\Program Files\Common Files\Microsoft Shared\OFFICE12\Office Setup Controller\Setup.exe文件

应该是该文件引起的ui停止响应,直接运行该文件果然,它是向导式操作,一步一步之后,2008终于可以正常开发了.

VS 2008

Fri, 04 Jan 2008 03:27:44 GMT

星期五天气:晴

今天是08年第一天上班,前两天休了年假,明天后天还要休息呵呵

今天装了 vs2008英文版在我的机器上比2003慢多了 ...

Windows 2000 Server 上.net1.1 框架与我们的dll版本不一致

Wed, 05 Sep 2007 01:23:03 GMT

星期三天气:晴

在昨天同事测试的时候发现服务器端验证控件在本地调试好使,可是上传到服务器上后

虽然验证都通过但是表单却还未提交,查找问题看源码以及dll源码

原来在System.web.dll中的BaseValidator.RegisterValidatorCommonScript方法

产生的客户端脚本不一样稍稍有一点的不同,结果就是...

自定义格式化

Tue, 04 Sep 2007 00:57:13 GMT

星期二天气:晴

越来越冷了早晚

微软的这个方式挺好但是很模糊

第一种方式是类的开发者角度格式化,后者为类的使用者角度格式化,缺点是后者不如前者了解类的内部结构.

using System;
namespace CSharpConsole
{
 public class Start
 {
  [STAThread]
  static void Main(string[] args)
  { 
   Console.Write(new Employess().ToString("xml", new FormatProvider()));   
   Console.Write(string.Format(new FormatProvider(), "{0:xml}", new object[]{new Employess()}));
   Console.Read();
  }
 }
 public class Employess : System.IFormattable
 {
  private string strName = "Iori";
  public string ToString(string format, IFormatProvider formatProvider)
  {
   if (format == null || format.Trim() == "")
   {
    return strName;
   }
   if(formatProvider != null)
   {
    ICustomFormatter fmt = formatProvider.GetFormat(typeof(ICustomFormatter)) as ICustomFormatter;
    if ( fmt != null )
    {
     return fmt.Format( format, this, formatProvider );
    }
   }
   switch(format)
   {
    case "G" :   
    default :
     return strName;
   }
  }
 }
 public class FormatProvider : System.IFormatProvider, System.ICustomFormatter
 {
  public object GetFormat(Type formatType)
  {   
   if (formatType == typeof (ICustomFormatter))
   {
    return this;
   }
   else
   {
    return null;
   }
  }
  public string Format(string format, object arg, IFormatProvider formatProvider)
  {   
   if (format == null || format.Trim() == "")
   {
    return arg.ToString();
   }
   
   if (format.StartsWith("xml")) 
   { 
    return "<xml>"+arg.ToString()+"</xml>";
   }
   return "noFormat"+arg.ToString();
  }
 }
}

脚本的 onSumbit 事件

Tue, 03 Apr 2007 08:09:16 GMT

星期二天气:多云

给同事解决一个问题不过它的电脑使用环境太糟了吧

键盘的按钮不好按不说 ,鼠标移动也费劲呀...

我们有一个组件,在表单提交时会执行一段脚本, 记录输入的数据

但是同事表单中还有一个下拉列表框,是带回发事件的,问题来了.

当它回发时 ,组件添加的表单onSumbit事件没有被执,导致输入到组件中的数据丢失...

解决办法在下拉列表框的 onchange 的dopostback事件前加入那段保存数据的脚本即可呀.

公司把那个组件叫 DataWindow 呵呵有趣

这周绝定要吃一次榴莲看看倒底啥味儿

自定义SharePoint Services 的Web服务上传文件

Thu, 29 Mar 2007 01:38:28 GMT

SharePoint 的web服务比较特殊 wsdl,disco文件不能够自动生成,需要两个对应的 aspx 文件.
例如服务叫 Service1.asmx 那么对应的文件就是 Service1WSDL.aspx And Service1Disco.aspx 以下是我测试用的样例:

WSDL
<%@ Page Language="C#" Inherits="System.Web.UI.Page"%>
<%@ Assembly Name="Microsoft.SharePoint, Microsoft.SharePoint, Version=11.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%@ Import Namespace="Microsoft.SharePoint.Utilities" %>
<%@ Import Namespace="Microsoft.SharePoint" %>
<% Response.ContentType = "text/xml"; %>
<discovery xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
 xmlns="http://schemas.xmlsoap.org/disco/">
  <contractRef 
 ref=<% SPEncode.WriteHtmlEncodeWithQuote(Response, SPWeb.OriginalBaseUrl(Request) + "?wsdl", '"'); %> 
 docRef=<% SPEncode.WriteHtmlEncodeWithQuote(Response, SPWeb.OriginalBaseUrl(Request), '"'); %>
 xmlns="http://schemas.xmlsoap.org/disco/scl/" />
  <soap address=<% SPEncode.WriteHtmlEncodeWithQuote(Response, SPWeb.OriginalBaseUrl(Request), '"'); %> 
 xmlns:q1="http://defaultName/" 
 binding="q1:CDocumentManagerSoap" 
 xmlns="http://schemas.xmlsoap.org/disco/soap/" />
</discovery>

Disco
<%@ Page Language="C#" Inherits="System.Web.UI.Page"%>
<%@ Assembly Name="Microsoft.SharePoint, Microsoft.SharePoint, Version=11.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%@ Import Namespace="Microsoft.SharePoint.Utilities" %>
<%@ Import Namespace="Microsoft.SharePoint" %>
<% Response.ContentType = "text/xml"; %>
<definitions xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:s="http://www.w3.org/2001/XMLSchema" xmlns:s0="http://defaultName/" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:tm="http://microsoft.com/wsdl/mime/textMatching/" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" targetNamespace="http://defaultName/" xmlns="http://schemas.xmlsoap.org/wsdl/">
  <types>
    <s:schema elementFormDefault="qualified" targetNamespace="http://defaultName/">
      <s:element name="Upload">
        <s:complexType />
      </s:element>
      <s:element name="UploadResponse">
        <s:complexType>
          <s:sequence>
            <s:element minOccurs="0" maxOccurs="1" name="UploadResult" type="s:string" />
          </s:sequence>
        </s:complexType>
      </s:element>
    </s:schema>
  </types>
  <message name="UploadSoapIn">
    <part name="parameters" element="s0:Upload" />
  </message>
  <message name="UploadSoapOut">
    <part name="parameters" element="s0:UploadResponse" />
  </message>
  <portType name="CDocumentManagerSoap">
    <operation name="Upload">
      <input message="s0:UploadSoapIn" />
      <output message="s0:UploadSoapOut" />
    </operation>
  </portType>
  <binding name="CDocumentManagerSoap" type="s0:CDocumentManagerSoap">
    <soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="document" />
    <operation name="Upload">
      <soap:operation soapAction="http://defaultName/Upload" style="document" />
      <input>
        <soap:body use="literal" />
      </input>
      <output>
        <soap:body use="literal" />
      </output>
    </operation>
  </binding>
  <service name="CDocumentManager">
    <port name="CDocumentManagerSoap" binding="s0:CDocumentManagerSoap">
      <soap:address location=<% SPEncode.WriteHtmlEncodeWithQuote(Response, SPWeb.OriginalBaseUrl(Request), '"'); %> />
    </port>
  </service>
</definitions>

Soucre Code
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Web;
using System.Web.Services;

using Microsoft.SharePoint;
using Microsoft.SharePoint.SoapServer;

namespace SharePointDemo
{
	/// 
	/// CDocumentManager 的摘要说明。
	/// 
	[WebService(Namespace="http://defaultName/")]
	public class CDocumentManager : System.Web.Services.WebService
	{
		public CDocumentManager()
		{
			//CODEGEN: 该调用是 ASP.NET Web 服务设计器所必需的
			InitializeComponent();
		}

		#region 组件设计器生成的代码
		
		//Web 服务设计器所必需的
		private IContainer components = null;
				
		/// 
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// 
		private void InitializeComponent()
		{
		}

		/// 
		/// 清理所有正在使用的资源。
		/// 
		protected override void Dispose( bool disposing )
		{
			if(disposing && components != null)
			{
				components.Dispose();
			}
			base.Dispose(disposing);		
		}
		
		#endregion

		// WEB 服务示例
		// HelloWorld() 示例服务返回字符串 Hello World
		// 若要生成，请取消注释下列行，然后保存并生成项目
		// 若要测试此 Web 服务，请按 F5 键

//		[WebMethod]
//		public string HelloWorld()
//		{
//			return "Hello World";
//		}

		[WebMethod]
		public string Upload(/*string strDirName*/)
		{	
			Microsoft.SharePoint.SPWebCollection oWebs = Microsoft.SharePoint.WebControls.SPControl.GetContextSite(this.Context).AllWebs;
			System.Text.StringBuilder strResult = new System.Text.StringBuilder();
			
			foreach(Microsoft.SharePoint.SPWeb oWeb in oWebs)
			{				
				strResult.Append(oWeb.Url + ",name=" + oWeb.Name + " : " +oWeb.Webs.Count.ToString() + "\n");
				strResult.Append("Shared Documents: " + oWeb.GetFolder("Shared Documents").Exists.ToString() + "\n");
				SPFolderCollection folders = oWeb.Folders;
				foreach (SPFolder folder in folders)
				{
					strResult.Append("  " + folder.Name + "\n");
				}
			}
			Microsoft.SharePoint.SPWeb oIoriWeb = oWebs[0].Site.OpenWeb("/Sites/Iori/");
			SPFolderCollection folders1 = oIoriWeb.Folders;
			foreach (SPFolder folder in folders1)
			{
				strResult.Append("  " + folder.Name + "\n");
			}
			strResult.Append(oIoriWeb.GetFolder("DocLib/TestFolder").Files.Add("test.txt", System.Text.Encoding.UTF7.GetBytes(new string('a',8*1024*1024))));
			oIoriWeb.Close();
			return strResult.ToString();
		}
	}
}

C# 没有多重继承

Wed, 07 Feb 2007 14:26:37 GMT

星期三天气:多云

天气真的暖和了一点儿都不冷

同学夫妇今天就来打扑克了通常都是周未的不过被我们打的落花流水

周五要去金皇冠会所年未愉乐

正题:

多重继承(Multiple inheritance):通过多个基类来生成一个新类,这种语法正如料想的那样,只要继承图简单,MI也不复杂.
然而菱形的MI会引入许多二义性和奇异的情况.

脚本动态创建服务器文件上传控件

Wed, 30 Aug 2006 09:00:21 GMT

前台脚本：

<TABLE id=Table1 cellSpacing=1 cellPadding=1 width=300 border=1>
  <TR> 
    <TD><input type="button" value="添加附件"onclick="addAttach()"></TD>
  </TR>
</TABLE>
<script language="javascript">
 function addAttach(){
  var fileUpload = document.createElement('<input type=file id=oAutoAttach runat=server>');
  var table = document.getElementById("Table1");
  var row = table.insertRow();
  var cell = row.insertCell();
  cell.appendChild(fileUpload);
 }
</script>

前台脚本也可以用insertAdjacentHTML方法加入控件html代码

后台代码：

for(int i=0; i<this.Request.Files.AllKeys.Length; i++)
   {
    if(this.Request.Files.AllKeys[i].Equals("oAutoAttach"))
    {
     this.Response.Write(this.Request.Files.Get(i).FileName);
    }
   }

集合类中用的是ArrayList 与 HashTable 所以顺序是一样的key与值。

.NET的验证码

Fri, 28 Jul 2006 06:39:51 GMT

星期五　天气：多云

周未了　明后天去做什么呢　嘿嘿

<%@ Import Namespace="System.Drawing.Drawing2D" %>
<%@ Import Namespace="System.Drawing.Imaging" %>
<%@ Import Namespace="System.Drawing" %>
<%@ Page language="c#" %>
<SCRIPT language=c# runat="server">
Random rd = new Random();
void Page_Load(Object src,EventArgs e)
{
 Response.AppendHeader("Cache-Control","no-cache");
 Response.AppendHeader("Pragma","no-cache");
 Response.AppendHeader("Content-Type","image/jpeg");
 Response.Clear();

 string[] mCode = new string[4]{GetRandomChar(1),GetRandomChar(2),GetRandomChar(3),GetRandomChar(4)};
 PointF[] ps = new PointF[4]{new Point(5,2) , new Point(15,2) , new Point(25,2) , new Point(35,2)};
 Size offsetP = new Size(1,1);
 String sCode = String.Join("",mCode);
 Font ft = new Font("Tahoma",12,FontStyle.Regular,GraphicsUnit.Pixel);
 Session["VerifyCode"] = sCode;
 
 
 
 Pen blackPen = new Pen(Color.FromArgb(151,151,188),1);

 using(Bitmap image = new Bitmap(55,20))
 {
  using(Graphics g = Graphics.FromImage(image))
  {
   g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias; 
   g.Clear(Color.FromArgb(214,242,253));
   g.DrawRectangle(blackPen,0,0,54,19);
   g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;  
   for(int i = 0; i < 4; i++)
   {
    g.DrawString(mCode[i].ToString(),ft,Brushes.Black,ps[i] + offsetP);
   } 
  }
  image.Save(Response.OutputStream,ImageFormat.Jpeg);
 }
 Response.End(); 
}
string GetRandomChar(int i)
{
 return rd.Next(0,10).ToString();
} 
</SCRIPT>

部属COM+组件服务

Mon, 24 Jul 2006 07:50:41 GMT

星期一天气：多云

这些天比较冷快了就要快立秋了哦

天空中总是飘着很多的白云一朵一朵的很漂亮想起来小的时候的样子

这几天研究了一个 windows 组件服务记录一下

还弄了一个安装程序 Show 一下

using System;
using System.Collections;
using System.ComponentModel;
using System.Configuration.Install;
using System.EnterpriseServices;


namespace DebugENS.Test
{
	/// 
	/// Installer 的摘要说明。
	/// 
	[RunInstaller(true)]
	public class Installer : System.Configuration.Install.Installer
	{
		/// 
		/// 必需的设计器变量。
		/// 
		private System.ComponentModel.Container components = null;

		public Installer()
		{
			// 该调用是设计器所必需的。
			InitializeComponent();

			// TODO: 在 InitializeComponent 调用后添加任何初始化
		}

		public override void Install(System.Collections.IDictionary stateSaver)
		{
			try 
			{
				string appID = null;
				string typeLib = null;
				// Get the location of the current assembly
				string assembly = GetType().Assembly.Location;
				// Install the application
				RegistrationHelper regHelper = new RegistrationHelper ();
				regHelper.InstallAssembly (assembly, ref appID, ref typeLib,
					InstallationFlags.FindOrCreateTargetApplication);
				// Save the state - you will need this for the uninstall
				stateSaver.Add ("AppID", appID);
				stateSaver.Add ("Assembly", assembly);
			}
			catch(Exception ex)
			{
//#if DEBUG
//				Debug.WriteLine (ex);
//#endif
//				StreamWriter writer = File.AppendText ("InstallError.log");
//				writer.WriteLine ("Uninstall Error: {0}", ex.Message);
				// If the installer catches the exception it will display 
				// an error message.  Show a friendly error message
				throw new ApplicationException
					(
					"Error installing the middle tier", ex);
			}
		} 

	
		public override void Uninstall( System.Collections.IDictionary savedState)
		{
			try
			{
				// Get the state created when the app was installed
				string appID = (string)savedState["AppID"];
				string assembly = (string)savedState["Assembly"];
				// Uninstall the application
				RegistrationHelper regHelper = new RegistrationHelper ();
				regHelper.UninstallAssembly (assembly, appID);
			}
			catch ( Exception ex)
			{
				// Don't allow unhandled exceptions during uninstall
//#if DEBUG
//				Debug.WriteLine (ex);
//#endif
//				StreamWriter sw = File.AppendText ("InstallError.log");
//				sw.WriteLine ("Uninstall Error: {0}", ex.Message);
			}
		}

		public override void Rollback(System.Collections.IDictionary savedState)

		{
		try
	{
		// Get the state created when the app was installed
		string appID = (string)savedState["AppID"];
		string assembly = (string)savedState["Assembly"];
		// Uninstall the application
		RegistrationHelper regHelper = new RegistrationHelper ();
		regHelper.UninstallAssembly (assembly, appID);
	}
	catch ( Exception ex)
{
	// Don't allow unhandled exceptions during uninstall
	//#if DEBUG
	//				Debug.WriteLine (ex);
	//#endif
	//				StreamWriter sw = File.AppendText ("InstallError.log");
	//				sw.WriteLine ("Uninstall Error: {0}", ex.Message);
}


		}

      

		public override void Commit(System.Collections.IDictionary savedState)

		{

			base.Commit (savedState);

		}



		///  
		/// 清理所有正在使用的资源。
		/// 
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}


		#region 组件设计器生成的代码
		/// 
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// 
		private void InitializeComponent()
		{
			components = new System.ComponentModel.Container();
		}
		#endregion
	}
}

FrameWork 1.1 in win2000 sp4

Thu, 29 Jun 2006 14:21:02 GMT

星期四天气：有雨

外面刚刚下过雨

终于把 .Net 安装完了原来2000安装包里的有权限问题

删了重装了一个 2003的框架好了搞定

小燕就在我身边去睡觉吧几天没睡好了

支持断点下载

Mon, 10 Apr 2006 06:24:58 GMT

using System;
using System.IO;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace DebugENS
{
 /// <summary>
 /// Test 的摘要说明。
 /// </summary>
 public class Test : System.Web.UI.Page
 {
  private String strFilePath = null;
  private int iBuffer = 1024;
  protected System.Web.UI.HtmlControls.HtmlInputFile file1;
  protected System.Web.UI.HtmlControls.HtmlForm form1;
  protected System.Web.UI.HtmlControls.HtmlInputButton Submit1;
  private byte[] bBuffer = null;

  private void Page_Load(object sender, System.EventArgs e)
  {
   // 在此处放置用户代码以初始化页面
   this.Response.Cache.SetNoStore();
   this.Response.Cache.SetNoServerCaching();
   this.Response.Cache.SetExpires(DateTime.Now.AddSeconds(0));
   
   if(this.Request.Params["file"] == null){ return;}
   this.strFilePath = this.Request.MapPath(this.Request.Params["file"]);

   if(System.IO.File.Exists(strFilePath))
   {
    FileStream fs  = File.OpenRead(strFilePath);
    
    bBuffer = new byte[iBuffer];
    int iReadCounter = 0;

    Response.Clear();
    Response.Buffer= true;
    Response.AddHeader("Content-Type","application/octet-stream");
    Response.AddHeader("Content-Disposition", "Attachment; Filename="+this.Request.Params["file"]);
    this.EnableViewState = false;

    long lFileLength = fs.Length;
    long lStartPoint = 0;

    String strRange = this.Request.Headers.Get("Range");

    if( strRange!=null && !strRange.Equals(""))
    {
     Response.StatusCode = 206;
     // Range: bytes=27534336-
     lStartPoint = Convert.ToInt64(this.Request.Headers.Get("Range").Replace("bytes=","").Replace("-",""));
    }
    Response.AddHeader("Content-Length", (lFileLength - lStartPoint).ToString()); 
    if(lStartPoint != 0)
    {
     //Content-Range: bytes [文件块的开始字节]-[文件的总大小 - 1]/[文件的总大小]
     Response.AddHeader("Content-Range","bytes " + lStartPoint.ToString() + "-" + (lFileLength - 1).ToString() + "/" + lFileLength.ToString());
    }


    this.Response.AddHeader("Last-Modified",File.GetLastWriteTimeUtc(strFilePath).ToString("r"));
    this.Response.AddHeader("ETag","abcsex");

    while ((iReadCounter = fs.Read(bBuffer,0,bBuffer.Length)) > 0)
    {
     if(this.Response.IsClientConnected)
      this.Response.OutputStream.Write(bBuffer,0,iReadCounter);
     else break;
    }
    fs.Flush();
    fs.Close();

    this.Response.OutputStream.Flush();
    this.Response.OutputStream.Close();
   
    #endregion      
 
   }
  }

  override protected void OnInit(EventArgs e)
  {

   InitializeComponent();
   base.OnInit(e);
  }

  private void InitializeComponent()
  {    
   this.Load += new System.EventHandler(this.Page_Load);

}
}

[进度条]组件

Wed, 05 Apr 2006 06:49:37 GMT

等待提交组件呵还得看我的脚本的历害.

using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
using System.Xml;
using System.Xml.Xsl;
using System.Xml.XPath;

/**
     * 文件名称：  CWait.cs
     * 描　 述 ：  进度条控件
     * 版   权 ：
     * 公   司 ： 东宇软件有限公司
     * 作   者 ： 杨林
     * 日　 期 ： 2006－03－30
     * 版   本 ： 1.0
     * 文件修改日志:
     *  1. 日期：
     *     修 改 人：
     *     修改内容：
     *     版    本：
*/

namespace dysoft.Web.SubmitProgress
{
 /// 
 /// 进度条控件,东宇软件-技术组。
 /// 
 [DefaultProperty("ControlID"), 
  ToolboxData("<{0}:CWait runat=server>"),Designer("dysoft.Web.SubmitProgress.CWaitDesigner")]
 public class CWait : System.Web.UI.WebControls.WebControl
 {
  private String strControlID;
  private String strMessageText;
  private String strTemplateUrl;

  /// 
  /// 构造函数
  /// 
  public CWait()
  {
   this.strMessageText = "正在发送数据,请等待...";
   this.strTemplateUrl = "/js/ProcessStyle.xml";
  }

  /// 
  /// 需要弹出进度条的按钮ID
  /// 
  [Description("指定按钮的ID,指定按钮将有进度条.")]
  public String ControlID
  {
   get
   {
    return this.strControlID;
   }
   set
   {
    this.strControlID = value;
   }
  }

  /// 
  /// 进度条的提示信息.
  /// 
  [Description("进度条的提示信息.")]
  public String MessageText
  {
   get
   {
    return this.strMessageText.Replace("\"","").Replace("'","");;
   }
   set
   {
    this.strMessageText = value;
   }
  }

  /// 
  /// 指定进度条样式模板URL.
  /// 
  [Description("指定进度条样式模板URL.")]
  public String TemplateUrl
  {
   get
   {
    return this.strTemplateUrl;
   }
   set
   {
    this.strTemplateUrl = value;
   }
  }

  ///  
  /// 将此控件呈现给指定的输出参数。
  /// 
  ///  要写出到的 HTML 编写器 
  protected override void Render(HtmlTextWriter output)
  {
   //output.Write(this.strMessageText);
  }

  protected override void OnPreRender(EventArgs e)
  {
   base.OnPreRender (e);
   if(this.ControlID == null)
   {
    return;
   }
   //String strScript = "";
   if(this.strTemplateUrl.Trim().Equals(""))
   {
    this.strTemplateUrl = "/js/ProcessStyle.xml";
   }
   String strFilename = this.TemplateUrl;
   String strStylesheet = "/js/ProcessStatus.xslt";

   String strXmlPath = System.Web.HttpContext.Current.Request.MapPath(strFilename);
   String strXSLTPath = System.Web.HttpContext.Current.Request.MapPath(strStylesheet);

   if(!System.IO.File.Exists(strXmlPath) || !System.IO.File.Exists(strXSLTPath))
   {
    System.Web.HttpContext.Current.Response.ClearContent();
    System.Web.HttpContext.Current.Response.Write("请确认文件"+strXmlPath+"和"+strXSLTPath+"\"存在!");
    return;
   }

   XslTransform oXslt = new XslTransform();
   oXslt.Load(strXSLTPath);
   XPathDocument oXpathDocument = new XPathDocument(strXmlPath);
   System.Text.StringBuilder oSBuder = new System.Text.StringBuilder();
   System.IO.StringWriter oSW = new System.IO.StringWriter(oSBuder);
   oXslt.Transform(oXpathDocument,null,oSW,new XmlUrlResolver());
   String strScript = oSBuder.ToString();
   oSW.Close();

   this.Page.RegisterClientScriptBlock("waitScript",strScript);
   this.Page.RegisterOnSubmitStatement("wait","wait();");
   this.Page.RegisterClientScriptBlock(this.ClientID,"");
   this.Page.RegisterStartupScript(this.ControlID,"");
   
  }
 }
}



using System;
using System.Web.UI.Design.WebControls;

/**
     * 文件名称：  CWaitDesigner.cs
     * 描　 述 ：  设计时类
     * 版   权 ：
     * 公   司 ： 东宇软件有限公司
     * 作   者 ： 杨林
     * 日　 期 ： 2006－03－30
     * 版   本 ： 1.0
     * 文件修改日志:
     *  1. 日期：
     *     修 改 人：
     *     修改内容：
     *     版    本：
*/

namespace dysoft.Web.SubmitProgress
{
 public class CWaitDesigner : System.Web.UI.Design.ControlDesigner
 {
  public CWaitDesigner()
  {
   
  }

  public override string GetDesignTimeHtml()
  {
   //return base.GetDesignTimeHtml ();
   System.IO.StringWriter sw = new System.IO.StringWriter();
   System.Web.UI.HtmlTextWriter tw = new System.Web.UI.HtmlTextWriter(sw);
   System.Web.UI.WebControls.HyperLink hl = new System.Web.UI.WebControls.HyperLink();
   hl.NavigateUrl = "http://ens.dongyu.com.cn/";
   hl.Text = "[进度条]";
   hl.RenderControl(tw);

   //System.Web.UI.WebControls.Label lb = new System.Web.UI.WebControls.Label();
   //lb.Text =" 技术组设计  ";
   //lb.RenderControl(tw);

   return sw.ToString();
  }

 }
}

ProcessStatus.xslt



<?xml version="1.0" encoding="gb2312" ?>
<?xml:namespace prefix = xsl /><xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
 <xsl:output method="html"></xsl:output>
 <xsl:template match="/Style">
  <SCRIPT language=javascript>
   <xsl:value-of select="document('')/*/node()[@name='script_Onload']/node()" disable-output-escaping="yes"/>
   <xsl:value-of select="document('')/*/node()[@name='script_befor']/node()" disable-output-escaping="yes"/>
     strTable += '<xsl:value-of select="translate(.,'&#10;&#13;&#09;','')" disable-output-escaping="yes"/>';
   <xsl:value-of select="document('')/*/node()[@name='script_after']/node()" disable-output-escaping="yes"/>
  </SCRIPT>
 </xsl:template>
 
 <xsl:template name="script_Onload">
  
 </xsl:template>
 
 <xsl:template name="script_befor">
  <![CDATA[
   function wait(){
    if(!window.event) return;
    if(currentButton != null){
     var bFind = false;
     for(var i=0;i<validsBtnButton.length;i++){
      if(validsBtnButton[i]==currentButton){
       bFind = true;
       break;
      }
     }
     if(bFind == false){
      return;
     }
    }
    else{
     return ;
    }
    if(typeof(window.event.returnValue) != "undefinded" && window.event.returnValue == false){
     return;
    }
    if(window.event.srcElement.tagName.toLowerCase() == "form"){
     var strTable = "";
     strTable += '<table width="100%" height="100%"><tr><td align="center">';   
  ]]>
 </xsl:template> 
 
 <xsl:template name="script_after">
  <![CDATA[
     strTable += '</td></tr></table>';
     
     var oDiv = document.getElementById("oWaitDiv");
     oDiv.innerHTML = strTable;
     ReDrawTable();
     if(document.getElementById("oMessage") == null){
      alert("样式模板格式不正确!");
      return;
     }
     if(currentMessage == ""){
      document.getElementById("oMessage").innerHTML = "正在发送数据，请稍候...";
     }else{
      document.getElementById("oMessage").innerHTML = currentMessage;
     }
     oDiv.style.display = "";
     
     /*
     window.attachEvent("onscroll",function(){
      ReDrawTable()
     });
     window.attachEvent("onresize",function(){
      ReDrawTable()
     });
     */
     
     try{
      window.event.srcElement.blur();
      document.activeElement.blur();
     }catch(e){
     }
    }
   }
   
   function ReDrawTable(){
    var oTable = document.getElementById("oStyleTable");
    oTable.style.position = "absolute";
    oTable.style.setExpression("top","eval((document.body.clientHeight-document.getElementById('oStyleTable').offsetHeight)/2+document.body.scrollTop)");
    oTable.style.setExpression("left","eval((document.body.clientWidth-document.getElementById('oStyleTable').offsetWidth)/2+document.body.scrollLeft)");  
   }
  ]]>
 </xsl:template>
</xsl:stylesheet>

ProcessStyle.xml
  
<?xml version="1.0" encoding="GB2312" ?> 
<STYLE>
 <![CDATA[
  <table cellpadding="0" cellspacing="1" width="268" height="134" bgcolor="white" style="border:1px solid #808080">
   <tr>
    <td bgcolor="#316db2" height=7></td>
   </tr>
   <tr>
    <td style="font-size:14px;color:#316db2;font-weight:bold;" align=center></td>
   </tr>
  </table>
 ]]>
</STYLE>

改变IIS根目录

Thu, 02 Mar 2006 06:00:47 GMT

由于多个web 项目都需要在根目录下工作

频烦打开iis控制台很费时费力

那么这个程序可以很方便的完成这项任务

主窗代码:

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace IIsControls
{
 /// <summary>
 /// Form1 的摘要说明。
 /// </summary>
 public class IIsWinForm : System.Windows.Forms.Form
 {
  private System.Windows.Forms.Button btnOK;
  private System.Windows.Forms.Button btnClose;
  private System.Windows.Forms.GroupBox gpControls;
  private System.Windows.Forms.TextBox lbWebPath;
  private System.Windows.Forms.TreeView tvWebSites;
  private System.ComponentModel.IContainer components;
  private IIsWebSiteCollection webSites;
  private System.Windows.Forms.ImageList imageList1;
  private System.Windows.Forms.Label label1;
  private TreeNode focusNode;
  public IIsWinForm()
  {
   //
   // Windows 窗体设计器支持所必需的
   //
   InitializeComponent();
   //
   // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
   //
   InitializeWebSiteTree();
  }

  public void InitializeWebSiteTree()
  {
   TreeNode host = new TreeNode("IIS://127.0.0.1");
   host.ImageIndex = host.SelectedImageIndex = 0;
   this.tvWebSites.Nodes.Add(host);
   webSites = IIsControler.GetWebSites();
   foreach(IIsWebSite webSite in webSites)
   {
    TreeNode webSiteNode = new TreeNode(webSite.WebName);
    webSiteNode.SelectedImageIndex = 1;
    webSiteNode.ImageIndex = 1;
    webSiteNode.Tag = webSite;
    host.Nodes.Add(webSiteNode);
   }
   if(host.Nodes.Count > 0)
   {
    host.Expand();
   }
  }
  /// <summary>
  /// 清理所有正在使用的资源。
  /// </summary>
  protected override void Dispose( bool disposing )
  {
   if( disposing )
   {
    if (components != null) 
    {
     components.Dispose();
    }
   }
   base.Dispose( disposing );
   webSites.DisposeAll();
   this.imageList1.Dispose();
  }
  #region Windows 窗体设计器生成的代码
  /// <summary>
  /// 设计器支持所需的方法 - 不要使用代码编辑器修改
  /// 此方法的内容。
  /// </summary>
  private void InitializeComponent()
  {
   this.components = new System.ComponentModel.Container();
   System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(IIsWinForm));
   this.tvWebSites = new System.Windows.Forms.TreeView();
   this.btnOK = new System.Windows.Forms.Button();
   this.btnClose = new System.Windows.Forms.Button();
   this.gpControls = new System.Windows.Forms.GroupBox();
   this.lbWebPath = new System.Windows.Forms.TextBox();
   this.imageList1 = new System.Windows.Forms.ImageList(this.components);
   this.label1 = new System.Windows.Forms.Label();
   this.gpControls.SuspendLayout();
   this.SuspendLayout();
   // 
   // tvWebSites
   // 
   this.tvWebSites.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
   this.tvWebSites.ImageList = this.imageList1;
   this.tvWebSites.Location = new System.Drawing.Point(10, 8);
   this.tvWebSites.Name = "tvWebSites";
   this.tvWebSites.Size = new System.Drawing.Size(274, 128);
   this.tvWebSites.TabIndex = 0;
   this.tvWebSites.AfterSelect += new System.Windows.Forms.TreeViewEventHandler(this.tvWebSites_AfterSelect);
   // 
   // btnOK
   // 
   this.btnOK.Enabled = false;
   this.btnOK.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
   this.btnOK.Location = new System.Drawing.Point(143, 64);
   this.btnOK.Name = "btnOK";
   this.btnOK.Size = new System.Drawing.Size(56, 23);
   this.btnOK.TabIndex = 1;
   this.btnOK.Text = "Change";
   this.btnOK.Click += new System.EventHandler(this.btnOK_Click);
   // 
   // btnClose
   // 
   this.btnClose.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
   this.btnClose.Location = new System.Drawing.Point(212, 64);
   this.btnClose.Name = "btnClose";
   this.btnClose.Size = new System.Drawing.Size(56, 23);
   this.btnClose.TabIndex = 2;
   this.btnClose.Text = "Close";
   this.btnClose.Click += new System.EventHandler(this.btnClose_Click);
   // 
   // gpControls
   // 
   this.gpControls.Controls.Add(this.label1);
   this.gpControls.Controls.Add(this.lbWebPath);
   this.gpControls.Controls.Add(this.btnClose);
   this.gpControls.Controls.Add(this.btnOK);
   this.gpControls.Location = new System.Drawing.Point(7, 152);
   this.gpControls.Name = "gpControls";
   this.gpControls.Size = new System.Drawing.Size(279, 104);
   this.gpControls.TabIndex = 3;
   this.gpControls.TabStop = false;
   this.gpControls.Text = "IIsControl";
   // 
   // lbWebPath
   // 
   this.lbWebPath.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
   this.lbWebPath.Location = new System.Drawing.Point(44, 24);
   this.lbWebPath.Name = "lbWebPath";
   this.lbWebPath.Size = new System.Drawing.Size(222, 20);
   this.lbWebPath.TabIndex = 3;
   this.lbWebPath.Text = "";
   // 
   // imageList1
   // 
   this.imageList1.ImageSize = new System.Drawing.Size(16, 16);
   this.imageList1.ImageStream = ((System.Windows.Forms.ImageListStreamer)(resources.GetObject("imageList1.ImageStream")));
   this.imageList1.TransparentColor = System.Drawing.Color.Transparent;
   // 
   // label1
   // 
   this.label1.Location = new System.Drawing.Point(9, 24);
   this.label1.Name = "label1";
   this.label1.Size = new System.Drawing.Size(30, 16);
   this.label1.TabIndex = 4;
   this.label1.Text = "path";
   // 
   // IIsWinForm
   // 
   this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
   this.ClientSize = new System.Drawing.Size(292, 267);
   this.Controls.Add(this.gpControls);
   this.Controls.Add(this.tvWebSites);
   this.Name = "IIsWinForm";
   this.Text = "IIsControls";
   this.gpControls.ResumeLayout(false);
   this.ResumeLayout(false);
  }
  #endregion
  /// <summary>
  /// 应用程序的主入口点。
  /// </summary>
  [STAThread]
  static void Main() 
  {
   Application.Run(new IIsWinForm());
  }
  private void tvWebSites_AfterSelect(object sender, System.Windows.Forms.TreeViewEventArgs e)
  {
   if(e.Node.Tag != null)
   {
    focusNode = e.Node;
    IIsWebSite webSite = (IIsWebSite)e.Node.Tag;
    this.lbWebPath.Text = webSite.GetWebPath();
    this.btnOK.Enabled = true;
   }
   else
   {
    this.btnOK.Enabled = false;
    this.lbWebPath.Text = e.Node.Text;
   }
  }
  private void btnClose_Click(object sender, System.EventArgs e)
  {
   this.Close();
  }
  private void btnOK_Click(object sender, System.EventArgs e)
  {
   if(focusNode != null)
   {
    IIsWebSite currWebSite = (IIsWebSite)focusNode.Tag;
    if(string.Compare(currWebSite.GetWebPath(), this.lbWebPath.Text) != 0)
    {
     try
     {
      currWebSite.SetWebPath(this.lbWebPath.Text);
      MessageBox.Show("操作完毕");
     }
     catch(Exception ex)
     {
      MessageBox.Show(ex.Message);
     }
    }
    else
    {
     MessageBox.Show("路径没有改变，操作完毕");
    }
   }
  }
 }
}

辅助类 代码:
using System;
using System.Collections;
using System.DirectoryServices;
namespace IIsControls
{
 /// <summary>
 /// IIsControler 的摘要说明。
 /// </summary>
 public class IIsControler
 {
  static readonly string IIS_ROOT;
  static IIsControler()
  {
   IIS_ROOT = "IIS://127.0.0.1/W3SVC";
  }
  public static IIsWebSiteCollection GetWebSites()
  {
   IIsWebSiteCollection sites = new IIsWebSiteCollection();
   DirectoryEntry iis = new DirectoryEntry(IIS_ROOT);
   foreach(DirectoryEntry site in iis.Children)
   {
    if(string.Compare(site.SchemaClassName, "IIsWebServer", true) == 0)
    {
     IIsWebSite webSite = new IIsWebSite(site.Path);
     sites.Add(webSite);
    }
   }
   return sites;
  }
 }
 public class IIsWebSite : IDisposable
 {
  string m_uri;
  string m_webName;
  string m_path;
  DirectoryEntry m_webSite;
  DirectoryEntry m_webRoot;
  public IIsWebSite(string IIsURI)
  {
   m_uri = IIsURI;
   m_webSite = new DirectoryEntry(IIsURI);
   m_webName = m_webSite.Invoke("Get", "ServerComment").ToString();
   m_webRoot = new DirectoryEntry(m_webSite.Path + "/ROOT");
  }
  public string GetWebPath()
  {
   //得到跟木录的物理地址
   if(this.m_path == null)
   {
    return this.m_path = m_webRoot.Properties["Path"][0].ToString();
   }
   else
   {
    return this.m_path;
   }
  }
  public void SetWebPath(string newPath)
  {
   if(System.IO.Directory.Exists(newPath))
   {
    this.m_webRoot.Properties["Path"][0] = newPath;
    this.m_webRoot.CommitChanges();
    this.m_webSite.CommitChanges();
    this.m_path = null;
   }
   else
   {
    throw new System.IO.DirectoryNotFoundException("目录不存在。");
   }
  }
  public string WebName
  {
   get
   {
    return this.m_webName;
   }
  }
  #region IDisposable 成员
  public void Dispose()
  {
   // TODO:  添加 IIsWebSite.Dispose 实现
   this.m_webRoot.Dispose();
   this.m_webSite.Dispose();
  }
  #endregion
 }
 public class IIsWebSiteCollection : ArrayList
 {
  public IIsWebSiteCollection() : base()
  {
  }
  public new IIsWebSite this[int i]
  {
   get
   {
    return (IIsWebSite)base[i];
   }
  }
  public void Add(IIsWebSite webSite)
  {
   base.Add(webSite);
  }
  public void DisposeAll()
  {
   for(int i = 0; i < this.Count; i++)
   {
    this[i].Dispose();
   }
  }
 }
}

精确计算程序运行时间

Wed, 08 Feb 2006 03:01:59 GMT

星期三　天气：晴

除了工作没什么新鲜的

每天还是吃饭　睡觉　上ＷＣ　中午不知道该吃啥

都逆了

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Runtime.InteropServices;

namespace DebugENS.Test
{
 public class TestTime : System.Web.UI.Page
 {
  [DllImport("Kernel32.dll")]
  private static extern bool QueryPerformanceCounter(out long lpPerformanceCount);

  [DllImport("Kernel32.dll")]
  private static extern bool QueryPerformanceFrequency(out long lpFrequency);

  private long start;
  private long end;
  private long frequency;

  private void Page_Load(object sender, System.EventArgs e)
  {

   if (QueryPerformanceFrequency(out frequency) == false)
   {
    // Frequency not supported
    throw new Win32Exception();
   }
   QueryPerformanceCounter(out start);
   DateTime startTime = DateTime.Now;
   
   //数值越低，DateTime.Now 的方式越不精确了；
   for(int i=0;i<11000;i++)
   {
    Response.Write(i+" ");
   }
   Response.Write("
"+ (DateTime.Now-startTime));
   QueryPerformanceCounter(out end);
   this.Response.Write("
Take Time:"+(end-start)/(double)frequency);//用时单位为秒。
  }

  #region Web 窗体设计器生成的代码
  override protected void OnInit(EventArgs e)
  {
   InitializeComponent();
   base.OnInit(e);
  }
  private void InitializeComponent()
  {    
   this.Load += new System.EventHandler(this.Page_Load);
  }
  #endregion
 }
}

建立播放音乐服务

Sun, 05 Feb 2006 06:51:47 GMT

如果你的电脑没有　音箱　而恰好你的同事的电脑上有

那么如果　是这样的情况　就可以在同事的电脑上　开展一项服务了

呼呼　可以通过　Web服务　或　纯aspx页　来实现

Process.Start("\"C:\\Program Files\\Windows Media Player\\mplayer2.exe\"","d:\\love.mp3");

呵呵　ＯＫ　就这么简简　这样你就在你的电脑上　调用它这个服务　你就能够听到

对方喇巴　送出的　音乐了　

当然　这可以更好一些　比如　等待、上传文件、关闭进程　等等

写个Ｄｅｍｏ　

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Web;
using System.Web.Services;

namespace DebugENS
{

 [WebService(Namespace="http://iori/PlayMusic")]
 public class PlayMusic : System.Web.Services.WebService
 {
  System.Diagnostics.Process p = null;

  static bool _running = false;

  public PlayMusic()
  {

   InitializeComponent();
  }
  
  private IContainer components = null;
    
  private void InitializeComponent()
  {
  }

  protected override void Dispose( bool disposing )
  {
   if(disposing && components != null)
   {
    components.Dispose();
   }
   base.Dispose(disposing);  
  }

    [WebMethod]
  [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.Synchronized)]
  public void Play(String strUrl)
  {
   lock(typeof(PlayMusic))
   {
    if(!_running)
    {
     
     try
     {
      p = Process.Start("\"C:\\Program Files\\Windows Media Player\\mplayer2.exe\"","/play /close "+strUrl);
      p.EnableRaisingEvents = true;
      p.Exited += new EventHandler(p_Exited);
      _running = true;     
     }
     catch(Exception ex)
     {
      System.Web.HttpContext.Current.Response.Write(ex.Message);
      String s = ex.Message;
     }
    }
    else
    {
     //this.Context.Response.Write("<string xmlns=\"http://iori/PlayMusic\">Working...,Invoke it in later.</string>");
    }
   }
  }

  private void p_Exited(object sender, EventArgs e)
  {
   _running = false;
  }

  [WebMethod]
  public void StopPlay()
  {
   if(p != null)
   {
    try
    {
     p.Kill();
    }
    catch(Exception ex)
    {
     this.Context.Response.Write(ex.Message);
    }
    _running = false;
   }
  }

}

大宫告成　播放器　会在放完歌曲后　自动关闭
并且在放歌当中　不会再接受请求

再扩充一下　可以上传文件　让播放器　读文件流　
不过大可不必　仅需提供URL做为参数　就行了

周未

Fri, 20 Jan 2006 05:35:30 GMT

星期五　天气：晴　不冷了

烦麻的一周　很快结速了

年假己经请了　不知能不能休上　

穷汉伸出手的意思是　到了这个时候　是该穷人出去务工的阶段了　呼呼

研究技术　.Net　上传文件　报错的问题

不是那么简单的　在查看了　客户端与服务器ＩＩＳ　传输补获上

应该是服务器拒绝了连接　在上传缓冲区溢出后

如果　紧紧是　４００　或者是其它的什么错误

程序员　可以通过　IHttpMoudle 接口　定义　PreSendRequestContent　事件　来处理

让服务器　反回　２００　状态码　即可

但如果　是拒绝连接　ｉｅ　就只能显示　ＤＮＳ错误　找不到该页的　４０４的默认信息了

我都成　ＭＶＰ了　呼呼

400 Bad Request.

Tue, 17 Jan 2006 05:25:06 GMT

这是一个专业的术语

也是一个专业的问题

首先　当客户端浏览器　提交的数据　如果很大的话

服务器　就很可能抛出这样的　错误

可是遇到错误　并不可怕　可怕的是　客户端　不接受我们的处理

它依旧我行我速

像Ｏｐｅｒａ　这样的浏览器　是好样的　它能够处理这样的问题

那么它就能够给客户以良好的　反应形式

当然　这需要在服务器端编码

而ＩＥ　默认不对此问题理采　它直接采用　ＤＮＳ错误　找不到该页的信息抛给用户

显然　这是不道德的　也是　不负责任的

然后　如果客户想看到这些错误时　它就必段设置浏览器中的选项　

将《显示友好错误信息》的选项　去掉

这个问题困难了我二个礼拜　好吧　其它没有更好的办法解决

但还是能够解决的　只是不是直接的解决而己

当然全球　的　程序　工作者们　都用　IHttpMoudle　接口

今天中午　我又只能吃包子了　时间都浪费在　ＩＥ　的　这个倔皮气上了　气我

数据绑定表达式

Thu, 24 Nov 2005 06:12:46 GMT

两天来一个郁闷的问题一直困惑着我

动态绑定的　下拉列表盒　不能正确定位

成生的列表中　在ＨＴＭＬ代码中　无selected项

反复根踪调试无果

后来意识到　出现这些错误的页面都调用了 Page.DataBind()　方法

结果的测试中果不其然

我在调用此方法之前　设置了　下拉列表盒的　选择项　

但是之后调用该方法后　下拉列表框　又被从新绑定　选择项被置空

解决方案是　先调用此方法进行数据绑定　然后　定项下拉列表盒　

根据业务需求变化

<%#GetCompanyMans()%>