/// <summary>Callback method for the async thread</summary>
/// <param name="ar">Async result object</param>
private void RunQueryCallback(IAsyncResult ar)
{
RunQueryDelegate dl = (RunQueryDelegate)((System.Runtime.Remoting.Messaging.AsyncResult)ar).AsyncDelegate;
AsyncOperation async = (AsyncOperation)ar.AsyncState;
ResultSet results;
RunQueryCompletedEventArgs completedArgs = new RunQueryCompletedEventArgs(null, false, null);
try
{
results = dl.EndInvoke(ar);
completedArgs.Results = results;
}
catch(Exception ex)
{
completedArgs = new RunQueryCompletedEventArgs(ex, false, null);
}
finally
{
async.PostOperationCompleted(delegate(object e) { OnRunQueryCompleted((RunQueryCompletedEventArgs)e); }, completedArgs);
}
}
/// <summary>Sets all the properties after the query completes</summary>
private void RunQuery_Completed(object sender, RunQueryCompletedEventArgs e)
{
bool isError = true;
if (e.Error == null)
{
_results.Data = e.Results.Data;
_results.Messages = e.Results.Messages;
isError = false;
}
else
{
_results.Messages = e.Error.Message;
}
if (this.Data != null && this.Data.SelectedDatabase != _oldDatabase)
{
App.OnDatabaseChanged(this, new ConnectionChangedEventArgs(null, this.Data.SelectedDatabase));
}
_results.OnPropertyChanged("Data");
_results.OnPropertyChanged("Messages");
_dab.RunQueryRowCreated -= this.RunQuery_InitialRowsCreatedAsync;
RunQueryCompleted -= this.RunQuery_Completed;
App.IsStopQueryEnabled = false;
OnEndQuery(isError);
}
/// <summary>Triggers the RunQueryCompleted event</summary>
protected virtual void OnRunQueryCompleted(RunQueryCompletedEventArgs e)
{
if (RunQueryCompleted != null)
{
RunQueryCompleted(this, e);
}
}