怎么判断一个字符串是否属于另一个字体串
如果我有一个字符串a= "abc ",有一个字符串 b= "abc,234,qwe,asdfsadf "
怎么判断a属于b


[解决办法]
b.indexOf(a)> =0
[解决办法]
try..

string a = "abc ";
string b = "abc,234,qwe,asdfsadf ";
if (b.IndexOf(a) != -1)
{
Console.WriteLine( "yes ");
}