How do I wait for a C# event to be raised?

Question

I have a Sender class that sends a Message on a IChannel:

public class MessageEventArgs : EventArgs {
  public Message         


        

Answer 1

Have you tried assigning the function to call asynchronously to a delegate, then invoking the mydelegateinstance.BeginInvoke?

Linky for reference.

With the below example, just call

FillDataSet(ref table, ref dataset);

and it'll work as if by magic. :)

#region DataSet manipulation
///
Fills a the distance table of a dataset
private void FillDataSet(ref DistanceDataTableAdapter taD, ref MyDataSet ds) {
  using (var myMRE = new ManualResetEventSlim(false)) {
    ds.EnforceConstraints = false;
    ds.Distance.BeginLoadData();
    Func distanceFill = taD.Fill;
    distanceFill.BeginInvoke(ds.Distance, FillCallback, new object[] { distanceFill, myMRE });
    WaitHandle.WaitAll(new []{ myMRE.WaitHandle });
    ds.Distance.EndLoadData();
    ds.EnforceConstraints = true;
  }
}
/// 

/// Callback used when filling a table asynchronously.
/// 
/// Represents the status of the asynchronous operation.
private void FillCallback(IAsyncResult result) where MyDataTable: DataTable {
  var state = result.AsyncState as object[];
  Debug.Assert((state != null) && (state.Length == 2), "State variable is either null or an invalid number of parameters were passed.");

  var fillFunc = state[0] as Func;
  var mre = state[1] as ManualResetEventSlim;
  Debug.Assert((mre != null) && (fillFunc != null));
  int rowsAffected = fillFunc.EndInvoke(result);
  Debug.WriteLine(" Rows: " + rowsAffected.ToString());
  mre.Set();
}