using System;
class MainClass
{
public static void Main()
{
try
{
MainClass MyObject = new MainClass();
IFormattable Formattable;
Formattable = (IFormattable)MyObject;
// wait for user to acknowledge the results
Console.WriteLine("Hit Enter to terminate...");
Console.Read();
}
catch(InvalidCastException)
{
Console.WriteLine("MyObject does not implement the IFormattable interface.");
}
}
}
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