LightSwitch登录界面如何设置背景

 LightSwitch中登录窗口是系统自动提供的，同时不支持自定义登录接口，程序一运行，就显示一个大白屏，中间是登录名，密码及一个按钮，这个真的非常难看。对于登录后的界面（应用一些皮肤样式），真的难于忍受。自己来动手美化一下吧。

 

将LS切换到文件模式下，进入到client项目，找到UserCode下的Application.cs,在里面添加如下代码，原理是通过对象引用找到系统内置登录窗口中的容器对象，强行植入背景。代码如下：

 

   using System;using System.Linq;using System.IO;using System.IO.IsolatedStorage;using System.Collections.Generic;using Microsoft.LightSwitch;using Microsoft.LightSwitch.Framework.Client;using Microsoft.LightSwitch.Presentation;using Microsoft.LightSwitch.Presentation.Extensions;using System.Windows.Controls;using System.Reflection;using Microsoft.LightSwitch.Runtime.Shell.Internal.Implementation;     public partial class Application    {        Frame rootFrame = null;        partial void Application_Initialize()        {                        Microsoft.LightSwitch.Threading.Dispatchers.Main.BeginInvoke(() =>            {                rootFrame = ((Page)((ContentPresenter)System.Windows.Application.Current.RootVisual).Content).Content as Frame;                if (rootFrame != null)                    rootFrame.Navigated += new System.Windows.Navigation.NavigatedEventHandler(rootFrame_Navigated);            });        }        void rootFrame_Navigated(object sender, System.Windows.Navigation.NavigationEventArgs e)        {            if (e.Content is LoginPage)            {                // prepare image, that is laying in the Resources folder as Embedded Resource                System.Windows.Media.Imaging.BitmapImage image = new System.Windows.Media.Imaging.BitmapImage();                image.SetSource(Assembly.GetExecutingAssembly().GetManifestResourceStream(this.GetType(), "bg.png"));                              Image mylogo = new Image() { Source = image, Stretch = System.Windows.Media.Stretch.Uniform };                mylogo.SetValue(Grid.ColumnSpanProperty, 5);                mylogo.SetValue(Grid.RowSpanProperty, 7);                 mylogo.Stretch = System.Windows.Media.Stretch.Fill;//拉伸                // add image                Grid grid = ((LoginPage)e.Content).Content as Grid;                grid.Children.Insert(0, mylogo); // not Add, for background                rootFrame.Navigated -= rootFrame_Navigated;            }        }}

运行一下。看一下效果

背景图在QQ SL版基础上修改了一下。