Checking the given character is Lower or Upper case using C#.

string Words = "Test strING";
char[] chars = Words.ToCharArray();
for (int i = 0; i <= chars.Length-1; i++)
{
    char c = chars;
    if (Char.IsLetter(c))
    {
        if (Char.IsLower(c))
        {
           Response.Write(c + " is lowercase"+"<br>");
        }
        else if (Char.IsUpper(c))
        {
           Response.Write(c + " is uppercase" + "<br>");
        }
   }
}