int value = 780000000;
checked {
try {
   // Square the original value.
   int square = value * value; 
   Console.WriteLine("{0} ^ 2 = {1}", value, square);
}
catch (OverflowException) {
   double square = Math.Pow(value, 2);
   Console.WriteLine("Exception: {0} > {1:E}.", 
                     square, Int32.MaxValue);
} }

byte value = 241;
checked {
try {
   sbyte newValue = (sbyte) value;
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", 
                     value.GetType().Name, value, 
                     newValue.GetType().Name, newValue);
}
catch (OverflowException) {
   Console.WriteLine("Exception: {0} > {1}.", value, SByte.MaxValue);
} }

byte value = 241;
try {
   sbyte newValue = (sbyte) value;
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", 
                     value.GetType().Name, value, 
                     newValue.GetType().Name, newValue);
}
catch (OverflowException) {
   Console.WriteLine("Exception: {0} > {1}.", value, SByte.MaxValue);
}