Differences

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--- swdev:dotnet:wpf:dependency_properties [2011/04/27 16:48]
smayr [Example]
+++ swdev:dotnet:wpf:dependency_properties [2013/01/25 09:16] (current)
smayr [Example 1]
@@ Line 57: / Line 57: @@
     DependencyObject source, DependencyPropertyChangedEventArgs e)
   {
-       bool control = source as bool;
+       Button control = source as Button;
        // Put some update logic here...
-       control = (bool)e.NewValue;
+       control.IsCancel = (bool)e.NewValue;
-       if (control == true)
+       if (control.IsCancel == true)
        {
            // do something
@@ Line 99: / Line 99: @@
     // If employee id is greater than 1000 then make it 1000
-    static void EmpIdCallBack(DependencyObject d,
+    static void EmpIdCallBack(DependencyObject d, DependencyPropertyChangedEventArgs args)
-        DependencyPropertyChangedEventArgs args)
     {
         Employee emp = (Employee)d;
@@ Line 182: / Line 181: @@
 C# code:
 <code csharp>
-. . .
+using System;
-#region DependencyProperty SelectedItemIndex
+using System.Collections.Generic;
-//-----------------------------------
+using System.Linq;
-// SelectedItemIndex
+using System.Text;
-//-----------------------------------
+using System.Windows;
-// Dependency Property
+using System.Windows.Controls;
-public static readonly DependencyProperty SelectedItemIndexProperty =
+using System.Windows.Data;
-  DependencyProperty.Register(
+using System.Windows.Documents;
-      "SelectedItemIndex",
+using System.Windows.Input;
-      typeof(int),
+using System.Windows.Media;
-      typeof(ucActiveInstrument),
+using System.Windows.Media.Imaging;
-      new FrameworkPropertyMetadata(
+using System.Windows.Navigation;
-            new int(),
+using System.Windows.Shapes;
-            OnSelectedItemIndexPropertyChanged
-      )
-  );
-// .NET Property Wrapper
+namespace ACME.Controls
-public int SelectedItemIndex
 {
-    // Important: Do not add any logic to these properties, because they are only
+    public partial class ucActiveInstrument : UserControl
-    // called when you set the property from code. If you set the property from XAML
+    {
-    // the SetValue() method is called directly.
+        #region DependencyProperty SelectedItemIndex
-    get { return (int)GetValue(SelectedItemIndexProperty); }
+        //-----------------------------------
-    set { SetValue(SelectedItemIndexProperty, value); }
+        // SelectedItemIndex
-}
+        //-----------------------------------
-// Alias
+        // Dependency Property
-public int SelectedItemIdx
+        public static readonly DependencyProperty SelectedItemIndexProperty =
-{
+          DependencyProperty.Register(
-    get { return SelectedItemIndex; }
+              "SelectedItemIndex",
-}
+              typeof(int),
+              typeof(ucActiveInstrument),
+              new FrameworkPropertyMetadata(
+                    new int(),
+                    OnSelectedItemIndexPropertyChanged
+              )
+          );
-///----------------------------------------------------------------------------------------
+        // .NET Property Wrapper
-/// <summary>
+        public int SelectedItemIndex
-/// OnPropertyChanged event handler for fitting view model.
+        {
-/// </summary>
+            // Important: Do not add any logic to these properties, because they are only
-/// <param name="source">Source control</param>
+            // called when you set the property from code. If you set the property from XAML
-/// <param name="e">Event Arguments</param>
+            // the SetValue() method is called directly.
-///----------------------------------------------------------------------------------------
+            get { return (int)GetValue(SelectedItemIndexProperty); }
-private static void OnSelectedItemIndexPropertyChanged(
+            set { SetValue(SelectedItemIndexProperty, value); }
-  DependencyObject source,
+        }
-  DependencyPropertyChangedEventArgs e)
+        // Alias
-{
+        public int SelectedItemIdx
-    ucActiveInstrument control = source as ucActiveInstrument;
+        {
-    //DateTime time = (DateTime)e.NewValue;
+            get { return SelectedItemIndex; }
+        }
-    //-----------------------------------------
+        ///----------------------------------------------------------------------------------------
-    // Put some update logic here...
+        /// <summary>
-    //-----------------------------------------
+        /// OnPropertyChanged event handler for fitting view model.
-    //SetDataBinding((TFittingViewModel)e.NewValue, control);
+        /// </summary>
-    //SetBinauralView(control);
+        /// <param name="source">Source control</param>
-    control.lstOptions.SelectedIndex = (int)e.NewValue;
+        /// <param name="e">Event Arguments</param>
+        ///----------------------------------------------------------------------------------------
+        private static void OnSelectedItemIndexPropertyChanged(
+          DependencyObject source,
+          DependencyPropertyChangedEventArgs e)
+        {
+            ucActiveInstrument control = source as ucActiveInstrument;
+            //DateTime time = (DateTime)e.NewValue;
+            //-----------------------------------------
+            // Put some update logic here...
+            //-----------------------------------------
+            //SetDataBinding((TFittingViewModel)e.NewValue, control);
+            //SetBinauralView(control);
+            control.lstOptions.SelectedIndex = (int)e.NewValue;
+        }
+        #endregion
+        //-----------------------------------------------------------------------------------------
+        /// <summary>
+        /// Constructor.
+        /// </summary>
+        //-----------------------------------------------------------------------------------------
+        public ucActiveInstrument()
+        {
+            InitializeComponent();
+        }
+        //-----------------------------------------------------------------------------------------
+        /// <summary>
+        /// SelectionChange event handler for lstOptions.
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        //-----------------------------------------------------------------------------------------
+        private void lstOptions_SelectionChanged(object sender, SelectionChangedEventArgs e)
+        {
+            this.SelectedItemIndex = lstOptions.SelectedIndex;
+        }
+    }
 }
-#endregion
 </code>
 == See Also ==
   * [[swdev:dotnet:wpf:implementing_mvvm|Implementing M-V-VM]]
   * [[http://zamjad.wordpress.com/2009/07/13/dependency-property-metadata/|Zeeshan Amjad: Dependency Property Metadata]]