Catch exception raise by System.OverflowException.

// Maximum Limit of Short integer.
short shorty = 32767;                   
int integer = shorty + 1;

try
{
    // force compiler to object
    checked                       
    {
        // try to cast it into a short
        shorty = (short)integer; 
    }
}
catch (OverflowException e)
{
    //"Arithmetic operation will raise overflow error."
    Console.WriteLine(e.Message);
}