Error "Empty GridView Message Content" in GridView SDK

[Psyduck]

Hello.

I am trying to use Empty GridView Message Content of GridView in SDK.

I saw an error when using GridView Empty inside a TabControl.

How do I solve this part?

 

EmptyGridViewMessageBehavior.cs

private void InsertAdditionalContentControl()
{
    if (this.additionalContentControl.Content != this.messageContent)
    {
        this.additionalContentControl.Content = this.messageContent;
    }

    var rootGrid = this.gridView.FindChildByType<Grid>(); // rootGrid is Null.
    rootGrid.Children.Add(this.additionalContentControl); // System.NullReferenceException
} 
//If I put TabControl, TabItem instead of Grid in FindChildByType<Grid>, rootGrid.Children could not be resolved.

 

Thanks.

[Martin Ivanov]

Hello KIM,

The tab control content loading behaves a bit different than the default loading logic in the framework, so the Loaded event in this case fires earlier than expected. To get the desired effect, you can delay the InsertAdditionalContentControl call a bit. For example:

this.gridView.Dispatcher.BeginInvoke(new Action(() => { 
	this.InsertAdditionalContentControl();
}));

Regards,
Martin Ivanov
Progress Telerik