ApplicationThemeHelper.Preload(Func<UserControl>) Method

Preloads theme resources for the view specified by the UserControl and allows you to initialize this view before the preload.

Namespace: DevExpress.Xpf.Core

Assembly: DevExpress.Data.Desktop.v23.2.dll

NuGet Packages: DevExpress.Data.Desktop, DevExpress.ExpressApp.Win.Design

Declaration

C#

public static void Preload(
    Func<UserControl> createAction
)

VB.NET

Public Shared Sub Preload(
    createAction As Func(Of UserControl)
)

Parameters

Name	Type	Description
createAction	Func<UserControl>	A function that initializes the preloaded UserControl.

Remarks

Use this method if the preloaded view is “lightweight” and you populate it with controls at runtime or based on a parameter.

The following code sample calls the MyControl.Populate() method and preloads resources for the MyControl after the method is executed:

App.xaml.cs

using DevExpress.Xpf.Core;
using System.Windows;

public partial class App : Application {
    static App() {
        SplashScreenManager.CreateThemed().ShowOnStartup();
        ApplicationThemeHelper.Preload(() => new MyControl().Populate());
    }
}

App.xaml.vb

Imports DevExpress.Xpf.Core
Imports System.Windows

Public Partial Class App
    Inherits Application

    Private Shared Sub New()
        SplashScreenManager.CreateThemed().ShowOnStartup()
        ApplicationThemeHelper.Preload(Function() New MyControl().Populate())
    End Sub
End Class

Refer to the following help topic for more information: Preload Theme Resources.