ProcessStartPolicy.RestrictedProcessStartConfirmationEventArgs.BlockStart() Method

Explicitly blocks the process from starting.

Namespace: DevExpress.Data.Utils

Assembly: DevExpress.Data.Desktop.v25.2.dll

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

Declaration

C#

public void BlockStart()

VB.NET

Public Sub BlockStart

Remarks

Call the BlockStart method in a ConfirmationRequest event handler to prevent execution and suppress the confirmation dialog.

The following example enables the RequireConfirmation() policy at application startup and handles the ConfirmationRequest event to implement custom validation logic. The event handler allows only HTTPS URLs and blocks all other process start requests without displaying the confirmation dialog.

using DevExpress.Data.Utils;

internal static class Program {
    [STAThread]
    static void Main() {
      // Apply the RequireConfirmation policy.
        ProcessStartPolicy.RequireConfirmation();

        ProcessStartPolicy.ConfirmationRequest += ProcessStartPolicy_ConfirmationRequest;

        ApplicationConfiguration.Initialize();
        Application.Run(new Form1());
    }

    // Allow only HTTPS URLs.
    static void ProcessStartPolicy_ConfirmationRequest(object? sender, ProcessStartPolicy.RestrictedProcessStartConfirmationEventArgs e) {
        if (e.Uri != null)
            if (e.Uri.Scheme == Uri.UriSchemeHttps)
                e.AllowStart();   // Safe URL — allow execution
            else
                e.BlockStart();   // Non-HTTPS — block execution
    }
}