实现:

StringWriter textBuffer = new StringWriter();
 Match match= Regex.Match(HTMLStr,@"\",RegexOptions.IgnoreCase | RegexOptions.Compiled);
 if(match==null)
 { 
 
 Response.Write(HTMLStr);
 return;
 }string codeType = match.Groups["codeType"].Value;
 string content = match.Groups["codeContent"].Value;
 if(codeType==String.Empty || content==String.Empty)
 { 
 
 Response.Write(HTMLStr);
 return;
 }
 // MessageBox.Show(codeType);
 // MessageBox.Show(content);
 string[] sr = content.Split(Convert.ToChar("\n"));
 if(codeType=="C#")
 { 
 
 textBuffer.Write("<Csharp>\r\n");
 foreach(string sourceLine in sr) 
 { 
 
 textBuffer.Write(FixCSLine(sourceLine)) ;
 textBuffer.Write("\r\n");
 }
 textBuffer.Write("</Csharp>");
 }
 else if(codeType=="JScript.Net")
 { 
 
 textBuffer.Write("<JScript.Net>\r\n");
 foreach(string sourceLine in sr) 
 { 
 
 textBuffer.Write(FixJSLine(sourceLine)) ;
 textBuffer.Write("\r\n");
 }
 textBuffer.Write("</JScript.Net>");
 }
 else if(codeType=="VB")
 { 
 
 textBuffer.Write("<VB>\r\n");
 foreach(string sourceLine in sr) 
 { 
 
 textBuffer.Write(FixVBLine(sourceLine)) ;
 textBuffer.Write("\r\n");
 }
 textBuffer.Write("</VB>");
 }