fix snippets warning

Author: gewarren

snippets/csharp/System.Windows.Threading/Dispatcher/CheckAccess/Window1.xaml.cs

@@ -8,7 +8,7 @@ namespace SDKSamples
 {
     public partial class Window1 : Window
     {
-        // Delegate used to push a worker itme onto the Dispatcher.
+        // Delegate used to push a worker item onto the Dispatcher.
         private delegate void UpdateUIDelegate(Button button);
 
         public Window1()
@@ -21,7 +21,7 @@ public Window1()
         }
 
         //<SnippetDispatcherAccessCheckAccess>
-        // Uses the Dispatcher.CheckAccess method to determine if 
+        // Uses the Dispatcher.CheckAccess method to determine if
         // the calling thread has access to the thread the UI object is on.
         private void TryToUpdateButtonCheckAccess(object uiObject)
         {
@@ -47,7 +47,7 @@ private void TryToUpdateButtonCheckAccess(object uiObject)
         //</SnippetDispatcherAccessCheckAccess>
 
         //<SnippetDispatcherAccessVerifyAccess>
-        // Uses the Dispatcher.VerifyAccess method to determine if 
+        // Uses the Dispatcher.VerifyAccess method to determine if
         // the calling thread has access to the thread the UI object is on.
         private void TryToUpdateButtonVerifyAccess(object uiObject)
         {
@@ -69,7 +69,7 @@ private void TryToUpdateButtonVerifyAccess(object uiObject)
                 {
                     // Exception Error Message.
                     MessageBox.Show("Exception ToString: \n\n" + e.ToString(),
-                        "Execption Caught! Thrown During AccessVerify().");
+                        "Exception Caught! Thrown During AccessVerify().");
 
                     MessageBox.Show("Pushing job onto UI Thread Dispatcher");
 

snippets/csharp/System.Windows.Threading/DispatcherObject/CheckAccess/Window1.xaml.cs

@@ -1,17 +1,13 @@
 using System;
+using System.Threading;
 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.Threading;
 using System.Windows.Threading;
 
 namespace SDKSamples
 {
     public partial class Window1 : Window
-    {   
+    {
         // Delegate used to place a work item onto the Dispatcher.
         private delegate void UpdateUIDelegate(Button button);
 
@@ -20,7 +16,7 @@ public Window1()
             InitializeComponent();
 
             // Get the id of the UI thread for display purposes.
-            _uiThreadID = this.Dispatcher.Thread.ManagedThreadId;
+            _uiThreadID = Dispatcher.Thread.ManagedThreadId;
             lblUIThreadID.Content = _uiThreadID;
         }
 
@@ -34,7 +30,7 @@ private void TryToUpdateButtonCheckAccess(object uiObject)
             if (theButton != null)
             {
                 // Checking if this thread has access to the object
-                if(theButton.CheckAccess())
+                if (theButton.CheckAccess())
                 {
                     // This thread has access so it can update the UI thread
                     UpdateButtonUI(theButton);
@@ -73,7 +69,7 @@ private void TryToUpdateButtonVerifyAccess(object uiObject)
                 catch (InvalidOperationException e)
                 {
                     // Exception error meessage.
-                    MessageBox.Show("Exception ToString: \n\n" + e.ToString(), 
+                    MessageBox.Show("Exception ToString: \n\n" + e.ToString(),
                         "Execption Caught! Thrown During AccessVerify().");
 
                     MessageBox.Show("Pushing job onto UI Thread Dispatcher");
@@ -88,7 +84,7 @@ private void TryToUpdateButtonVerifyAccess(object uiObject)
         private void threadStartingCheckAccess()
         {
             // Try to update a Button created on the UI thread.
-            TryToUpdateButtonCheckAccess(ButtonOnUIThread);   
+            TryToUpdateButtonCheckAccess(ButtonOnUIThread);
         }
 
         private void threadStartingVerifyAccess()
@@ -102,7 +98,7 @@ private void CreateThread(object sender, RoutedEventArgs e)
             ThreadStart threadStartingPoint;
 
             // Determine which ThreadStart to use.
-            if (rbCheckAccess.IsChecked)
+            if (rbCheckAccess.IsChecked.Value)
             {
                 threadStartingPoint = new ThreadStart(threadStartingCheckAccess);
             }
@@ -130,4 +126,4 @@ private void UpdateButtonUI(Button theButton)
         private int _uiThreadID;
         private int _backgroundThreadID;
     }
-}
+}