C # Custom exception

Sometimes you need to distinguish between different custom errors, or you may need specific error parameters, and you need to customize some of the exception classes, and the method is simple enough to simply inherit exception and its constructors. Sometimes in order to invoke only specific parameters, other constructors can be set to private to hide.Public class Checkruleexception:exception    {Public readonly Echeckruleexceptiontype Checkruleexceptiontype;Public object OBJ; Public checkruleexception (Echeckruleexceptiontype checkruleexceptiontype, Object obj=null): Base ()        {This . Checkruleexceptiontype = Checkruleexceptiontype;This . obj = obj;        }private Checkruleexception (String message): base (Message) {}Private Checkruleexception (SerializationInfo info, StreamingContext context): Base (info, context) {}private Checkruleexception (String message, Exception innerexception): Base (message, innerexception) {}    }About the application: can define the way of the base class, increase the system unified coding, etc., such as:

C # Custom exception