C# Exception Data

Description

Exception Data gets a collection of key/value pairs that provide additional user-defined information about the exception.

Syntax

Exception.Data has the following syntax.


public virtual IDictionary Data { get; }

Example

The following example demonstrates how to add and retrieve information using the Data property.


using System;/*from   www.  ja  va 2s.  co m*/
using System.Collections;

class Sample 
{
   public static void Main()
   {
      try {
          Exception e = new Exception("This statement is the original exception message.");
          string s = "Information.";
          int i = -903;
          DateTime dt = DateTime.Now;
          e.Data.Add("stringInfo", s);
          e.Data["IntInfo"] = i;
          e.Data["DateTimeInfo"] = dt;
          e.HelpLink = "http://java2s.com";
          throw e;
      }
      catch (Exception e) {
         Console.WriteLine("An exception was thrown.");
         Console.WriteLine(e.Message);
         if (e.Data.Count > 0) {
            Console.WriteLine("  Extra details:");
            foreach (DictionaryEntry de in e.Data)
               Console.WriteLine("    Key: {0,-20}      Value: {1}", 
                                 "'" + de.Key.ToString() + "'", de.Value);
         }
      }
   }
}

The code above generates the following result.