Use a Custom Class to Show a Splash Form (WinForms)

• Feb 20, 2026
• 2 minutes to read

This topic demonstrates how create a custom splash form and use a custom class to show this form.

1. Create a new Windows Form in your solution’s WinForms Application project, name the form SplashScreenForm , and design it to meet your requirements.

2. Add a new class to your WinForms Application Project and implement the ISplash interface.

3. Access the WinApplication.cs (WinApplication.vb) file. Set the SplashScreen property to a new MySplash class instance.

4. You can display loading progress information. To do this, implement the the ISupportUpdateSplash interface in the MySplash class and add the UpdateInfo method to the SplashScreenForm class.

5. Start the application to see the result.