Added Second Window

SecondWindow.xaml

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+<Window x:Class="GitDemo.SecondWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        Title="SecondWindow" Height="300" Width="300">
+    <Grid>
+
+    </Grid>
+</Window>

SecondWindow.xaml.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Shapes;
+
+namespace GitDemo
+{
+	/// <summary>
+	/// Interaction logic for SecondWindow.xaml
+	/// </summary>
+	public partial class SecondWindow : Window
+	{
+		public SecondWindow()
+		{
+			InitializeComponent();
+		}
+	}
+}