how to check the two strings are same...

protected void Button1_Click(object sender, EventArgs e)
{
   int comp = string.Compare(TextBox1.Text, TextBox2.Text, false);
// true - for case insensitive/ ignore case 
// false - for case sensitive 

        if (comp == 0) // If values are same
        {   
            Response.Write("<script>confirm('The Two Value Are Same. Do you Want to Continue?');</script>");
        }

        else   // If values are different
        {          
            Response.Write("<script>confirm('The Two value are different, Do you  want to Continue?');</script>");
        }
   
}

int result = string.Compare(val1, val2,true);


        if(result == 0)
        {
//Strings are equal

          }

protected void Button1_Click(object sender, System.EventArgs e) {
        string testString1 = TextBox1.Text.ToString();
        string testString2 = TextBox2.Text.ToString();
        int result = string.Compare(testString1, testString2,true);
        Label1.Text = "";

        if(result == 0)
        {
            Label1.Text += "Two strings are equal";
        }
        else if(result == 1)
        {
            Label1.Text += "Test String1 is greater than Test String2";
        }
        else if (result == -1)
        {
            Label1.Text += "Test String1 is less than Test String2";
        }

    }

function checkString()
{
  if (document.getElementById("txtVal1").value == document.getElementById("txtVal2").value)
      {
          if(confirm("String are same, Do you want to continue"))
             alert("you clicked yes")
          else
             alert("you clicked no")
      }
   else
      {
          if(confirm("The Two value are different, Do u want to Continue"))
             alert("you clicked yes")
          else
             alert("you clicked no")
      }
}