How to achieve click event via dependency property in silverlight?

问题

I'm fairly new to the world of Silverlight so please bear with me. I have created a custom pivot item control to be displayed in a pivot control. Now in this custom control there's a button. Now i could just add the click event handler to the button in the custom control's backing cs file and that would be ok. But is there a way for me to specify the event handler of the custom control's button during the declaration of the custom control? i.e. something like this in my pivot_page.xaml

<custom:myPivotItem background="..." height=".." width=".." click="myHandler"/>

where myHandler is declared in pivot_page.cs? Thanks

回答1:

You could expose a public event on your custom control that maps to the button's click event.

public event RoutedEventHandler Click
{
    add { this.button.Click += value; }
    remove { this.button.Click -= value; }
}

回答2:

Solved it by declaring a RoutedEventHandler in the custom controls cs file (myCustomPivotItem.cs).

 public event RoutedEventHandler Click;

Then in onApplyTemplate I get access to the rectangle object with

 Rectangle rect = this.GetTemplateChild("rectObject") as Rectangle;
 rect.Tap += new EventHandler<GestureEventArgs>(RectView_Tap);

I then declared RectView_Tap in the same cs file (myCustomPivotItem.cs)

    private void RectView_Tap(object sender, GestureEventArgs e)
    {
        if (Click != null)
            Click(this, new RoutedEventArgs());
    }

in my MainPage.xaml i declared the custom control like so

 <controls:PivotItem x:Name="pivotitem2">
     <view:myCustomePivotItem x:Name="custompivotItem2" Click="myHandler"/>
 </controls:PivotItem>

and in MainPage.cs i declared myHandler...

 void myHandler(object sender, RoutedEventArgs e)
    {
        //delegate operation
        MessageBox.Show("Clicked!");
    }

And it works as expected!! :) Hope it helps anyone who needs it.

来源：https://stackoverflow.com/questions/8846195/how-to-achieve-click-event-via-dependency-property-in-silverlight

标签

.net

silverlight

xaml