When to set focus in UserControl to make it work?

Hi,

I have this code for my “Connect form” and I would like to set focus to a text box after the form is displayed. My code looks like this:

using Avalonia;
using Avalonia.Controls;
using Avalonia.LogicalTree;
using Avalonia.Markup.Xaml;
using NLog;

namespace Project.AvaloniaGui.Views
{
    /// <summary>
    /// Control representing the connect form.
    /// </summary>
    public class ConnectFormView: UserControl
    {
        public ConnectFormView()
        {
            this.InitializeComponent();
        }

        protected override void OnInitialized()
        {
            base.OnInitialized();

            TextBox? host = this.FindControl<TextBox>("HostTb");
            host!.Focus();
        }

        /// <summary>
        /// Loads the object to the corresponding Avalonia component.
        /// </summary>
        private void InitializeComponent()
        {
            AvaloniaXamlLoader.Load(this);
        }
    }
}

Unfortunately, even though TextBox? host = this.FindControl<TextBox>("HostTb"); is not null, there is no effect of host!.Focus(); line.

Does anybody know what is wrong? I couldn’t find any examples how to work with “focus”.

Thanks!

[FoggyFinder]

I have tried that to no avail.

public ConnectFormView()
{
     this.InitializeComponent();
     var hostTb = this.FindControl<TextBox>("HostTb");
     if (hostTb != null)
     {
         hostTb.AttachedToVisualTree += (s,e) => hostTb.Focus();
     }
}

[maxkatz6]

@FoggyFinder well, there also could be some property IsViewFocused in the ViewModel and DataTriggerBehavior to bind it with the same CallMethodAction.