For those who detest placing two backslashes in a string to show that one backslash is indeed required in the string, for example:
strFilename = new string("C:\Program Files\KT\Masterfile.txt");
You can show the compiler that the backslashes are a part of the string (not control characters ) by using the @ character:
strFilename = new string(@"C:\Program Files\KT\Masterfile.txt");
Note that the @ is in front of the string, not inside the string.