Problem adding to Exception.Data Dictionary

Question

I am trying to add a key value pair and having trouble adding the key to Exception.Data:

The enum is of type int (default)

        catch (Exception ex)
        {
            ex.Data.Add(Enums.ExceptionData.SomeName, _someText);
        }

note: when I add a watch for Enums.ExceptionData.SomeName, I get SomeName, the name of the enum back. for the line above when trying to add that as a key to the dictionary.

When I try to check the ex.Data further up the stack, it's returning null. Here's how I attempt to check it:

ex.Data[Enums.ExceptionData.SomeName].ToString()

So here's how it all goes down. First, in my Request.cs Abstract class, this code eventually runs (yes, _someText has a valid string):

        try
        {
            // Send the Request
            requestStream = request.GetRequestStream();
            requestStream.Write(data, 0, data.Length);
            requestStream.Close();

            // get response
            response = (HttpWebResponse)request.GetResponse();
        }
        catch (Exception ex)
        {
            // include SOAP string that was sent
            ex.Data.Add(Enums.ExceptionDataRequest.SomeName, _someText);
            string test;
        }

In my code-behind I call this method:

        try
        {
            radio.UpdateFrequency(...);
            LogFrequency();
        }
        catch (Exception ex)
        {
            radio.LogFailure(..., ex.Data[Enums.ExceptionDataRequest.SomeName].ToString());
        }

and here's how radio.UpdateFrequency looks:

    public void UpdateFrequency(...)
    {
        ....

        // update frequency (which also performs opt-in)
        FrequencyRequest request = new FrequencyRequest(actionID, email, listID);
        FrequencyResponse response = (FrequencyResponse)request.SendRequest();

        ....
    }

so if this fails, (at least believe) the request error bubbles up to my try/catch in my code-behind:

FrequencyRequest request = new FrequencyRequest(actionID, email, listID);

fails, now grab that data in my try-catch in my code-behind.

Answer 1

You are adding stuff to the dictionary using the enum value as key and querying it with a string key (not enum). Change the above query code as follows and it should work just fine.

ex.Data[Enums.ExceptionData.SomeName].ToString()

---

This sample code writes hello world in the console. Is _someText in your example a null string?

namespace ConsoleApplication1
{
    using System;

    enum Values
    {
        Value1
    }

    class Program
    {
        static void Test()
        {
            try
            {
                int a = 0;
                int c = 12 / a;
            }
            catch (Exception ex)
            {
                ex.Data.Add(Values.Value1, "hello world");
                throw ex;
            }
        }

        static void Main(string[] args)
        {
            try
            {
                Test();
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Data[Values.Value1].ToString());
            }

            Console.ReadLine();
        }
    }
}