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string a;
string b = "11,12,13";
if (((IList)b.Split(',')).Contains(a))
{
//execute
}
more refer:
http://www.cnblogs.com/insus/archive/2011/12/16/2290093.html string a = "1";
string b = "11,1,123,122,133";
string[] bs = b.Split(",".ToArray(), StringSplitOptions.RemoveEmptyEntries);
if (bs.Contains(a))
{
//执行你的代码
}
string a = "11";
string b = "11,12,13";
bool exist = false;
for (int i = 0; i < b.Split(',').Length; i++)
{
if (b.Split(',')[i]==a)
{
exist = true;
break;
}
}
if (exist)
{
//执行
}
else
{
//不执行
}
string b = "11,12,13";
string a="11";
if (b.Split(',').Contains(a))
{
Console.WriteLine("执行");
}
else
{
Console.WriteLine("不执行");
}