Find the sting in the stringer array

The followin code is used to find the given string
in the string array

string[] DataArray = {"Kumar", "Shunmuganathan"};
string FindString = "nathan";

int strNumber;
int strIndex = 0;

for (strNumber = 0; strNumber < DataArray.Length; strNumber++)
{
    strIndex = DataArray[strNumber].IndexOf(FindString);
    if (strIndex >= 0)
        break;
}
Console.WriteLine("String number: {0}\nString index: {1}",
    strNumber, strIndex);