WPF MVVM Dependency Properties -

I have the following condition:

1. I only have user controls with a single grid Is inside
2. grid's first column is bound to the list of Aitmssors a checkbox as the column, which is connected to IsSelected property customer model
3. Grid & lt; CustomerModel & gt;
4. When the user checks any of the corresponding IsSelected property of CustomerModel is being updated

   question:

   1. < P> I've added a dependency property to UserControl called "SelectCustomerItems", and I want to return it to a list & lt; CustomerModel & gt;

   2. This UserControl is placed on a window

   3. dependency property "SelectedCustomerItems" is to "SelectedCustomers (only IsSelected to = For true) "Property inside WindowViewModel

      But I am not getting the selected client item through this dependency property. Apply your DP to:

        #region SomeProperty /// & lt; Summary & gt; ///; & Lt; See cref = "DependencyProperty" /> & Lt; Cref = "SomeProperty" /> See. /// & lt; / Summary & gt; Public static only DependencyProperty SomePropertyProperty = DependencyProperty.Register (SomePropertyPropertyName, typeof (object), typeof (SomeType), // other kinds of reading may be appropriate (minus its situ new FrameworkPropertyMetadata, OnSomePropertyPropertyChanged)); /// & lt; Summary & gt; The value of /// when & lt; Cref = "SomePropertyProperty" /> & Lt ;; Cref = "SomeType" /> Changes on given example /// & lt; / Summary & gt; /// & lt; Param name = "d" & gt; Example on which property changed & Lt; / Param & gt; /// & lt; Ultimate name = "E" & gt; & Lt; See cref = "System.Windows.DependencyPropertyChangedEventArgs" /> Example with event data & Lt; / Param & gt; Private static void OnSomePropertyPropertyChanged (DependencyObject d, DependencyPropertyChangedEventArgs e) {(as SomeType d) KOnSomePropertyChanged (in kind e.OldValue, in e.NewValue kind); } /// & lt; Summary & gt; When the & lt; See cref = "SomeProperty" /> Change. /// & lt; / Summary & gt; /// & lt; Param name = "oldValue" & gt; Old value & lt; / Param & gt; /// & lt; Param name = "newValue" & gt; New value & lt; / Param & gt; Private Zero onsomeproperty-chinged (Object Olderview, Object New Value) {} /// & lt; Summary & gt; Name of /// & lt; See cref = "SomeProperty" /> & Lt; Cref = "DependencyProperty" /> See. /// & lt; / Summary & gt; Public const string SomePropertyPropertyName = "SomeProperty"; /// & lt; Summary & gt; ////// & lt; / Summary & gt; Public Object SomeProperty {Return (Object) GetValue (SomePropertyProperty); } Set {set value (some property properties, values); }} #endregion   
       You should understand that added a DependencyProperty just  WPF binding system with a bunch of junk / strong>, its not a hook. It is a huge, complex system that lives under the sea level on which your DP beauty floats. . These are the ways that you will not expect to know it until you actually know it.  
       You are facing the revelation we had with all the draft para: Binding property accessors (via medium) Does not have access to DependencyProperty values ​​i.e.,  get  and  set  methods). These property accessories are the convenience methods for you to use with the  only  code, you can share and use them, which are the actual hooks in the system (in my example given above, the gates / sets See implementation).  
       If you want to listen for change information, then you should do what I have done in my example You can add a change notification listener while registering your dependency registration. You add the changes reported ( using DependencyPropertyDescriptor  DataContext ) < Em> override  / code> for this, but I've missed them).  
        But, whatever you do, do not  get  and  set  for your code, do not add code for your dependencies!  They can not be executed by winning binding operations.  
       For more information about how DependencyProperties works,