Questions on UI for WPF Forum

1 question

0 answers

194 views

Is it possible to check the busy indicator loading performance?

Hello.

First of all, my problem is that when the window is opened, the busy indicator appears after about 1-2 seconds.

The window is wrapped with a busy indicator.

I use async on Loaded Evenet to control the IsBsuy property.

<telerik:EventToCommandBehavior.EventBindings>
	<telerik:EventBinding EventName="Loaded" Command="{Binding OnEventLoadedCommand}"/>
</telerik:EventToCommandBehavior.EventBindings>

public ICommand OnEventLoadedCommand { get => new DelegateCommand(obj => Loaded(obj)); }
private async void Loaded()
{
    IsBusy = true;

        DataLoad . . . . (using async task)

    IsBusy = false;
}

In a simple sample project, it appears immediately.
However, in my actual project, it is a bit delayed.

This is my guess.
Before Loaded, my actual project contains a lot of controls.

The window contains navigation.

There are about 10 usercontrols.

<Window>
    <DataTemplate ....  dataconext = ViewModel> * 10
</Window>

<usercontrol> * 10
    <Many Controls Input Initial Setting>
</usercontrol>

ViewModel..cs => Read values of many properties before constructor

User controls all share the window viewmodel (not separate, only the WindowViewModel).

I think this is the cause of the first creation, but what about it?

Is there any way to solve this? If not, what's the problem?

Thanks.