C# code for string comparision

//string comaparision

string strval1 = "shivu";
string strval2 = "SHIVU";


//dont use this like this code, bec here two instences of string will created
//at the time of ToUpper method

if (strval1.ToUpper().Equals(strval2.ToUpper()))
        Trace.Write("matching");
else
        Trace.Write("not matching");


//Put this code instead of above code.

if (strval1.Equals(strval2, StringComparison.InvariantCultureIgnoreCase))
        Trace.Write("matching");
else
        Trace.Write("not matching");