判断一个数组中是否包含某个字符串

1.public bool isExist(string[] ss, string str)
{
List<string> ls = new List<string>(ss);
foreach (string s in ls)
{
if (ls.Contains(str))
return true;
}
return false;
}

2.

private bool CheckZ(string str,string[] ss)
{
string[] t = ss;
for (int i = 0; i < t.Length; i++)
{
if (str.Equals(t[i].ToString()))
{ return false; }

}
return true;
}

3.

Array.IndexOf(string[],str)

4.

string [] str;

str[0].Contains("ss");

5. IndexOf

6.

str="sdf,gfd,gyh";

string s = "gfd";

int i = 0;

string [3] str1 = str.split(',');

foreach(DataRow dr in str1)

{

if(dr[0] == s)

RETURN TRUE;

else return false;

i ++;

}