C# Exception Exception(String, Exception)

Description

Exception Exception(String, Exception) initializes a new instance of the Exception class with a specified error message and a reference to the inner exception that is the cause of this exception.

Syntax

Exception.Exception(String, Exception) has the following syntax.


public Exception(
  string message,
  Exception innerException
)

Parameters

Exception.Exception(String, Exception) has the following parameters.

message - The error message that explains the reason for the exception.
innerException - The exception that is the cause of the current exception, or a null reference (Nothing in Visual Basic) if no inner exception is specified.

Example

The following code example derives an Exception for a specific condition.


using System;//from   w  w w . j av  a  2s. c  o  m

class LogTableOverflowException : Exception
{
    const string overflowMessage = "The log table has overflowed.";

    public LogTableOverflowException() :
        base(overflowMessage)
    { }

    public LogTableOverflowException(string auxMessage) :
        base(String.Format("{0} - {1}",
          overflowMessage, auxMessage))
    { }

    public LogTableOverflowException(
        string auxMessage, Exception inner) :
        base(String.Format("{0} - {1}",
               overflowMessage, auxMessage), inner)
    { }
}


class OverflowDemo
{
    public static void Main()
    {
        try
        {
            throw new LogTableOverflowException(
                String.Format("Record \"{0}\" was not logged.",
                    ""), new Exception("test"));

        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.ToString());
        }
    }
}

The code above generates the following result.