WPF 登录界面

一星空为主题的比较漂亮的登录界面，在牛人基础上改的

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Windows;

namespace WPFMathActivity
{
    /// 

    /// App.xaml 的交互逻辑
    /// 

    public partial class App : Application
    {
    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2015-01-08 19:42  WPFMathActivity\
     文件         555  2015-01-08 14:21  WPFMathActivity\App.xaml
     文件         311  2014-12-18 16:08  WPFMathActivity\App.xaml.cs
     目录           0  2015-01-08 22:08  WPFMathActivity\Images\
     文件      158720  2015-01-08 22:08  WPFMathActivity\Images\Thumbs.db
     文件        3115  2015-01-07 22:46  WPFMathActivity\Images\close0.png
     文件        3509  2015-01-07 22:46  WPFMathActivity\Images\close1.png
     文件       17373  2015-01-07 22:46  WPFMathActivity\Images\cloud.png
     文件      676225  2015-01-08 16:32  WPFMathActivity\Images\loginbody.png
     文件      289422  2015-01-07 22:46  WPFMathActivity\Images\logo32.ico
     文件        2922  2015-01-07 22:46  WPFMathActivity\Images\mini0.png
     文件        3066  2015-01-07 22:46  WPFMathActivity\Images\mini1.png
     文件       81962  2015-01-08 16:47  WPFMathActivity\Images\sun2.png
     文件      200391  2015-01-08 16:55  WPFMathActivity\Images\titlebackground.png
     文件        4432  2015-01-08 19:22  WPFMathActivity\MainWindow.xaml
     文件        2668  2015-01-08 14:30  WPFMathActivity\MainWindow.xaml.cs
     文件         292  2015-01-08 10:18  WPFMathActivity\MathActivity.xaml
     文件         557  2015-01-08 10:18  WPFMathActivity\MathActivity.xaml.cs
     目录           0  2015-01-08 19:42  WPFMathActivity\Properties\
     文件        2195  2014-12-18 16:08  WPFMathActivity\Properties\AssemblyInfo.cs
     文件        2882  2014-12-18 16:08  WPFMathActivity\Properties\Resources.Designer.cs
     文件        5612  2014-12-18 16:08  WPFMathActivity\Properties\Resources.resx
     文件        1102  2014-12-18 16:08  WPFMathActivity\Properties\Settings.Designer.cs
     文件         201  2014-12-18 16:08  WPFMathActivity\Properties\Settings.settings
     文件        5332  2015-01-08 16:33  WPFMathActivity\WPFMathActivity.csproj
     目录           0  2015-01-08 19:42  WPFMathActivity\bin\
     目录           0  2015-01-08 19:42  WPFMathActivity\bin\Debug\
     文件       11600  2015-01-08 18:14  WPFMathActivity\bin\Debug\WPFMathActivity.vshost.exe
     目录           0  2015-01-08 22:08  WPFMathActivity\bin\Release\
     文件       16537  2015-01-08 16:16  WPFMathActivity\button.xaml
     目录           0  2015-01-08 19:42  WPFMathActivity\obj\
............此处省略11个文件信息