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copied!<p>As per the answers in your <a href="https://stackoverflow.com/questions/7262137/what-is-datacontext-for">latest question</a>, the DataContext is the object that your Bindings will use as their data source.</p> <p>When I suggested setting the DataContext to the page or control (below, in original answer), this was so you didn't have to specify the <code>Source</code> property in your Binding as stated in your original question.</p> <p><strong>Example</strong> - Rather than specifying your Binding like:</p> <p><code>{Binding Path=PropertyName, RelativeSource={RelativeSource AncestorType={x:Type ns:ControlName}}}</code> </p> <p>you could have just used </p> <p><code>{Binding Path=PropertyName}</code></p> <p>as the containers <code>DataContext</code> property was set to the instance of <code>ControlName</code> (this is only the case if you specify <code>DataContext = this</code>, <em>not</em> <code>DataContext = this.DataContext</code> as that will just set it to itself and be pointless).</p> <p>Now for <code>Page</code> or <code>Window</code> objects, <code>PropertyName</code> can be either be a register <code>DependencyProperty</code> instance, or it can be a stock standard <code>Property</code> that raised the <code>INotifyPropertyChanged.PropertyChanged</code> event to notify the children in the XAML that the property has changed and they update themselves as required.</p> <p>For <code>Control</code> objects, you can still use either method - however, if you want to be able to bind to these properties, they will need to be defined as <code>DependencyProperty</code>s.</p> <p>Are you able to update your post with <em>any</em> source for us to look at for you?</p> <hr /> <p><strong>Original Answer:</strong></p> <p>I'm not entirely sure I understand your final goal, but the laziest way to specify a DataContext for your controls would be to set the page's DataContext property in the constructor to itself.</p> <p><code>this.DataContext = this;</code></p> <p>This eliminates the need to set the Source and RelativeSource properties in your Binding, while still allowing you to bind directly to the page properties.</p> <p>Example:</p> <pre><code>public class MyControl : UserControl { public static readonly DependencyProperty SomeStringProperty = DependencyProperty.Register("SomeString", typeof(string), typeof(ownerclass), new UIPropertyMetadata(0)); public string SomeString { get { return (string)GetValue(SomeStringProperty); } set { SetValue(SomeStringProperty, value); } } public MyControl() { InitializeComponent(); DataContext = this; } } </code></pre> <p>Then in your XAML:</p> <pre><code><TextBlock Text="{Binding Path=SomeString}" /> </code></pre>

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