C# switch statement string contains

	using System;
	using System.Collections.Generic;
	using System.Text;
	using System.Net.Mail;
	using System.Net;
	using System.Diagnostics;
	using System.Linq;
	namespace StringEscapeCharacters
	{
	class Program
	{
	static string strToAddress;
	static string strSubject;
	//static string body = " ";
	static string strServer;
	static string strPort;
	static string strFrom;
	static string strInputArgs;
	static string strLogmsg = string.Empty;
	static void Main(string[] args)
	{
	string[] keyStrings = new string[] { "#to", "#subject", "#server", "#port", "#from" };
	foreach (string arg in args)
	{
	strInputArgs += " " + arg;
	//switch start....
	foreach (string s in keyStrings)
	{
	string caseSwitch = "null";
	if (arg.Contains(s))
	{
	caseSwitch = s;
	switch (caseSwitch)
	{
	case "#to":
	strToAddress = arg.Split('=')[1];
	if (strToAddress.IndexOf("\"") != 1)
	{
	strToAddress = strToAddress.Replace("\"", "");
	}
	break;
	case "#subject":
	strSubject = arg.Split('=')[1];
	if (strSubject.IndexOf("\"") != -1)
	{
	strSubject = strSubject.Replace("\"", "");
	}
	break;
	case "#server":
	strServer = arg.Split('=')[1];
	if (strServer.IndexOf("\"") != -1)
	{
	strServer = strServer.Replace("\"", "");
	}
	break;
	case "#port":
	strPort = arg.Split('=')[1];
	if (strPort.IndexOf("\"") != -1)
	{
	strPort = strPort.Replace("\"", "");
	}
	break;
	case "#from":
	strFrom = arg.Split('=')[1];
	if (strFrom.IndexOf("\"") != -1)
	{
	strFrom = strFrom.Replace("\"", "");
	}
	break;
	case "null":
	strLogmsg += DateTime.Now + ": Wrong arg: " + arg + "<br/>";
	break;
	}
	break;
	}
	}
	//Switch end...
	}
	try
	{
	//do business logic...
	strLogmsg += DateTime.Now + ": Actual arg values: " + strInputArgs + "<br/>";
	strLogmsg += DateTime.Now + ": Args after adding escape charecters:" + strToAddress+""+strServer+""+strSubject+""+strPort+""+strFrom;
	}
	catch (Exception ex)
	{
	// Log error message
	strLogmsg += DateTime.Now + ": Exception : ";
	strLogmsg += "Message : " + ex.Message;
	strLogmsg += "StackTrace : " + ex.StackTrace;
	}
	System.IO.File.WriteAllText(@"C:\temp\mylog.log", strLogmsg);
	return;
	}
	}
	}

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