Correct typo and formatting (#10877)

Author: mikkelbu

snippets/csharp/System.Windows/Rect/Overview/MyApp.xaml

@@ -1,4 +1,3 @@
-
 <Application xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
   xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
   xmlns:my="clr-namespace:SDKSample"

snippets/csharp/System.Windows/Rect/Overview/MyApp.xaml.cs

@@ -1,15 +1,18 @@
 using System;
 using System.Windows;
-using System.Windows.Navigation;
-using System.Windows.Controls;
-using System.Windows.Media;
-using System.Windows.Media.Animation;
 using System.IO;
 
 namespace SDKSample
 {
     public partial class MyApp : Application
     {
+        [STAThread]
+        public static void Main()
+        {
+            MyApp app = new MyApp();
+            app.InitializeComponent();
+            app.Run();
+        }
 
         public MyApp()
         {
@@ -30,9 +33,10 @@ private void CurrentDomain_UnhandledException(object sender, UnhandledExceptionE
                 StreamWriter wr = new StreamWriter("error.txt");
                 wr.Write(args.ExceptionObject.ToString());
                 wr.Close();
-            }catch( Exception e)
+            }
+            catch(Exception)
             {
-               throw e;
+                throw;
             }
             MessageBox.Show("Unhandled exception: " + args.ExceptionObject.ToString());
         }

snippets/csharp/System.Windows/Rect/Overview/MyApp1.xaml

@@ -3,6 +3,4 @@
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    x:Class="Microsoft.Samples.RectExamples.MyApp"
    Startup="myAppStartup">
-
-
 </Application>

snippets/csharp/System.Windows/Rect/Overview/MyApp1.xaml.cs

@@ -1,11 +1,6 @@
-using System;
+using SDKSample;
+using System;
 using System.Windows;
-using System.Data;
-using System.Xml;
-using System.Configuration;
-using System.Windows.Media;
-using System.Windows.Media.Animation;
-using System.Windows.Navigation;
 
 namespace Microsoft.Samples.RectExamples
 {
@@ -33,4 +28,4 @@ private void CurrentDomain_UnhandledException(object sender, UnhandledExceptionE
             MessageBox.Show("Unhandled exception: " + args.ExceptionObject.ToString());
         }       
     }
-}
+}

snippets/csharp/System.Windows/Rect/Overview/RectExample.cs

@@ -1,5 +1,4 @@
 // <SnippetRectExampleWholePage>
-using System;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Media;
@@ -23,7 +22,7 @@ public RectExample()
             // 150 wide. The left side of the rectangle is 10 pixels from the left of the 
             // Canvas and the top side of the rectangle is 100 pixels from the top of the Canvas.  
             // Note: You could alternatively use the Rect Constructor to create this:
-            // Rect my Rect1 = new Rect(10,100,150,100");
+            // Rect myRect1 = new Rect(10, 100, 150, 100);
             Rect myRect1 = new Rect();
             myRect1.X = 10;
             myRect1.Y = 100;

snippets/csharp/System.Windows/Rect/Overview/RectExample1.cs

@@ -1,12 +1,8 @@
 using System;
 using System.Windows;
 using System.Windows.Controls;
-using System.Windows.Documents;
-using System.Windows.Navigation;
 using System.Windows.Shapes;
-using System.Windows.Data;
 using System.Windows.Media;
-using System.Windows.Media.Animation;
 
 namespace Microsoft.Samples.RectExamples
 {

snippets/csharp/System.Windows/Rect/Overview/Snippets.csproj

@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFrameworks>net6.0-windows</TargetFrameworks>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net6.0-windows</TargetFramework>
     <UseWPF>true</UseWPF>
   </PropertyGroup>