This exception signals a failure during a cast or explicit conversion.

public class InvalidCastException : SystemException {
// Public Constructors
   public InvalidCastException( );
   public InvalidCastException(string message);
   public InvalidCastException(string message, Exception innerException);
// Protected Constructors
   protected InvalidCastException(System.Runtime.Serialization.SerializationInfo info,
        System.Runtime.Serialization.StreamingContext context);
}

Hierarchy

Object Exception(System.Runtime.Serialization.ISerializable) SystemException InvalidCastException