從Internet上抓取指定URL的源碼的方案(C#)(3)_.Net教程

推薦：ASP.NET對(duì)IIS中的虛擬目錄進(jìn)行操作
//假如虛擬目錄名為"Webtest"，先在項(xiàng)目中引用 //System.DirectoryServices.dll，再 using System.DirectoryServices; protected System.DirectoryServices.DirectoryEntry di

/// <summary>
/// 輸出文件路徑
/// </summary>
public string OutFilePath
{
get{return outFilePath;}
set{outFilePath=value;}
}
/// <summary>
/// 返回的字符串
/// </summary>
public string OutString
{
get{return outString;}

}
/// <summary>
/// 返回提示信息
/// </summary>
public string NoteMessage
{
get{return noteMessage;}

}

#endregion

#region 構(gòu)造函數(shù)
public GetPageCode()
{
}
#endregion

#region 公共方法
/// <summary>
/// 讀取指定URL地址，存到指定文件中
/// </summary>
public void GetSource()
{
WebRequest request = WebRequest.Create(this.url);
//使用代理服務(wù)器的處理
if(this.proxyState==1)
{
//默認(rèn)讀取80端口的數(shù)據(jù)
if(this.proxyPort==null)
this.ProxyPort="80";

WebProxy myProxy=new WebProxy();
myProxy = (WebProxy)request.Proxy;
myProxy.Address = new Uri(this.ProxyAddress ":" this.ProxyPort);
myProxy.Credentials = new NetworkCredential(this.proxyAccount, this.proxyPassword, this.ProxyDomain);
request.Proxy = myProxy;
}
try

{
//請求服務(wù)
WebResponse response = request.GetResponse();
//返回信息
Stream resStream = response.GetResponseStream();
StreamReader sr = new StreamReader(resStream, System.Text.Encoding.Default);
string tempCode= sr.ReadToEnd();
resStream.Close();
sr.Close();

//如果輸出文件路徑為空，便將得到的內(nèi)容賦給OutString屬性
if(this.outFilePath==null)
{
this.outString=tempCode;
}
else
{

FileInfo fi = new FileInfo(this.outFilePath);
//如果存在文件則先干掉
if(fi.Exists)
fi.Delete();

StreamWriter sw = new StreamWriter(this.outFilePath,true,Encoding.Default);
sw.Write(tempCode);
sw.Flush();
sw.Close();
}
}
catch
{
this.noteMessage="出錯(cuò)了，請檢查網(wǎng)絡(luò)是否連通;";
}

分享：ASP.NET中數(shù)據(jù)庫的操作初步----增加、刪除、修改
注意：本文暫時(shí)不講解數(shù)據(jù)庫的數(shù)據(jù)調(diào)出和顯示，因?yàn)樗�涉及的東西比較多，所以我們將另外詳細(xì)講解。本文主要要講的是數(shù)據(jù)庫的增加、刪除、修改。 一、定義OleDbCommand類型變量：MyCommand