C# -如何让X509Certificate2UI窗口始终在最上面

using System.Security.Cryptography.X509Certificates;
using System.Windows.Forms;

public static class CertificateHelper
{
    public static X509Certificate2Collection ShowCertificateSelectionDialog()
    {
        X509Certificate2Collection selectedCertificates = null;

        // 创建X509Certificate2UI窗口
        X509Certificate2UI.DisplaySelectionWizard(
            new X509Certificate2UI.SelectionCallback(OnCertificateSelectionCallback),
            null,
            null,
            "Select Certificate",
            X509SelectionFlag.SingleSelection);

        return selectedCertificates;
    }

    private static bool OnCertificateSelectionCallback(X509Certificate2Collection certificates)
    {
        // 在此处处理选择的证书
        selectedCertificates = certificates;

        // 设置窗口始终在最上面
        Form activeForm = Form.ActiveForm;
        if (activeForm != null)
        {
            activeForm.TopMost = true;
        }

        return true;
    }
}

X509Certificate2Collection selectedCertificates = CertificateHelper.ShowCertificateSelectionDialog();