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