Custom control property - Binding problem

I have areally wierd problem when i'm using some simple custom control i've built: this is the custom control code :

public partial class ToolButton : Button
{
    public string ToolID
    {
        get { return (string)GetValue(ToolIDProperty); }
        set { SetValue(ToolIDProperty, value); }
    }

   public static readonly DependencyProperty ToolIDProperty =
   DependencyProperty.Register("ToolID", typeof(string), typeof(ToolButton), new    UIPropertyMetadata(""));


    public ToolButton()
    {
        InitializeComponent();
    }
}

Now when i'm trying to ude this custom control in the main window like that :

<ItemsControl Margin="100" ItemsSource="{Binding Path=Students}">
            <ItemsControl.ItemTemplate>
                <DataTemplate>
                   <customControls:ToolButton Height="100" Width="100" Margin="10" Cont开发者_StackOverflowent="{Binding Value.Name}"/> 
                                 </DataTemplate>
             </ItemsControl.ItemTemplate>
        </ItemsControl>

And the binding doesn't work !!

but when i'm using simple button the binding works excellent..

is someone faced similliar problem ??

Thanks...

---

put the following line into your ToolButton's constructor:

this.DataContext = this;