Progress feedback from Service Agent

Feb 19, 2014 at 4:30 AM
Edited Feb 19, 2014 at 4:30 AM
I've been following the samples you provided with the toolkit however I'm struggling to figure out how to do progress feedback through/from a service agent back to my View that binds to props on my VM.

In my VM I have:
// Call service agent with completion callback 
      _connectionString, type, Filename, _clientname, (intresult, error) => ImportCompleted(intresult, error)
In my service agent interface I have:
void DoImport(string connectionString, string type, string filename, string _clientname,   Action<IntegrationResult, Exception> action);
In my service agent I have:
var bw = new BackgroundWorker();

bw.DoWork += (s, ea) =>
        ea.Result = mi.Invoke(null, new object[] { connectionstring, filename, clientname });

bw.RunWorkerCompleted += (s, ea) =>
        if (ea.Error != null)
            completed(null, ea.Error);
            completed((IntegrationResult)ea.Result, null);

Thanks in advance.
Feb 19, 2014 at 8:02 PM
This should be fairly straightforward. Background Worker has an event you can fire to report progress. You can mirror that in your service agent by exposing a similar event, then firing it in a handler for the bw progress event. You can report progress from bw based on whatever you're doing, if there are chunks of work, or simply by using a timer.

Instead of adding events to your service agent, you can add another Action parameter to your DoImport method, which your service agent method invokes to report progress.

Hope this helps.