WPF使用Prism登录

思路：在主窗体出来之前，弹出登录框，如果验证成功关掉登录框。
LoginView 样式

    <prism:Dialog.WindowStyle>
        <Style TargetType="Window">
            "Width" Value="1024" />
            "Height" Value="512" />
            "WindowStyle" Value="None"/>
            "ResizeMode" Value="NoResize"/>
            "prism:Dialog.WindowStartupLocation" Value="CenterScreen" />
        Style>
    prism:Dialog.WindowStyle>

LoginViewModel代码
继承IDialogAware
登录成功使用
RequestClose?.Invoke(new DialogResult(ButtonResult.OK));

在APP代码中添加

在主窗渲染之前弹框

        protected override void OnInitialized()
        {
            var dialog = Container.Resolve<IDialogService>();
            dialog.ShowDialog("LoginView", callback =>
            {
                if (callback.Result != ButtonResult.OK)
                {
                    Environment.Exit(0);
                    return;
                }
				//给主窗体传值
                base.OnInitialized();
            });
        }

2.切换用户

        public static void LoginOut(IContainerProvider containerProvider)
        {
            Current.MainWindow.Hide();

            var dialog = containerProvider.Resolve<IDialogService>();

            dialog.ShowDialog("LoginView", callback =>
            {
                if (callback.Result != ButtonResult.OK)
                {
                    Environment.Exit(0);
                    return;
                }
				//给主窗体传值
                Current.MainWindow.Show();
            });
        }