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