如何不区分大小写??
Hashtable   ht   =   new   Hashtable();   
 			ht[ "Name "]   =    "yuna "; 
 			ht[ "Pass "]   =    "123456 ";  			 
 			if(ht.ContainsKey( "name "))    
 			{ 
 				Response.Write(ht[ "name "].ToString()); 
 			}   
 //   只要是name   不管大小写都能输出,怎么做到?? 
------解决方案--------------------明显不严谨。。这么做有什么好处呢?
------解决方案--------------------存进去的时候都小写或大写 
 读取的时候转换成小写或大写   
 Hashtable ht = new Hashtable();   
 			ht[ "Name ".ToLower()] =  "yuna "; 
 			ht[ "Pass ".ToLower()] =  "123456 ";  			 
 			if(ht.ContainsKey( "name "))  
 			{ 
 				Response.Write(ht[ "name "].ToString()); 
 			}