check a string in a string in c# code example

Example 1: check if string is in string[] c#

string stringToCheck = "text1";
string[] stringArray = { "text1", "testtest", "test1test2", "test2text1" };
foreach (string x in stringArray)
{
    if (x == stringToCheck)
    {
        // Process...
    }
}

Example 2: C# check something is string

if(value is string)
                {

                }