Drag and Drop WPF ComboBox, Buttons, Radio Buttons, etc

I have a problem, i've already read tutorials, blogs, etc about drag and drop on WPF (i'm using VS10).

The problem is I need to have a toolbox with buttons,combobox, radio button,etc sothe user can drag it and drop it(copy) on a work space (canvas or whatever).

I managed to do drag and drop from textbox and images but that doesn't work for me, when i tried on buttons or combobox it just doesnt work, i assume it is cause of the click event by default, i don't know what the problem is tho. Here is what i've tried with a button.

<Window x:Class="WpfApplication1.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="350" Width="525">
<Grid>
    <TextBox Height="22" HorizontalAlignment="Left" Margin="84,36,0,0" Name="tex开发者_JAVA百科tBox1" VerticalAlignment="Top" Width="103" Text="Drag" />
    <TextBox Height="40" HorizontalAlignment="Left" Margin="225,136,0,0" Name="textBox3" VerticalAlignment="Top" Width="124" Text="Drop" />
    <Label Content="DragLabel" Height="26" HorizontalAlignment="Left" Margin="284,36,0,0" Name="label1" VerticalAlignment="Top" Width="80" MouseDown="label1_MouseDown" />
    <Button Content="Button" Height="23" HorizontalAlignment="Left" Margin="84,122,0,0" Name="button1" VerticalAlignment="Top" Width="75" MouseDown="button1_MouseDown" AllowDrop="True" IsEnabled="True" Click="button1_Click" />
    <Rectangle Height="100" HorizontalAlignment="Left" Margin="149,199,0,0" Name="rectangle1" Stroke="Black" VerticalAlignment="Top" Width="200" AllowDrop="True" Fill="#FFDCA1A1" />
</Grid>

My Code Behind ...

    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void label1_MouseDown(object sender, MouseButtonEventArgs e)
        {
            Label lbl = (Label)sender;
            DragDrop.DoDragDrop(lbl, lbl.Content, DragDropEffects.Copy);
        }


        private void button1_MouseDown(object sender, MouseButtonEventArgs e)
        {
            var dependencyObject = (Button)sender;
            DragDrop.DoDragDrop(dependencyObject, dependencyObject, DragDropEffects.Move);
        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            return;
        }
    }

Thank You in advance guys. Btw sry about my english :s...

Thx again!

Luis

Have you tried using the PreviewMouseDown event instead of MouseDown? Your code will get called before the Button can capture the click.

WPF elements normally use RoutedEvents which often have a corresponding "Preview" event that uses the Tunneling Routing Strategy, which will be sent to all parents before the element that actually raised the event. This allows you to perform your operation in response to the MouseDown before the Button gets a chance to try to execute a click action.

private void button1_PreviewMouseDown(object sender, MouseButtonEventArgs e)
{
    var dependencyObject = (Button)sender;
    DragDrop.DoDragDrop(dependencyObject, dependencyObject, DragDropEffects.Move); 
} 

will work as mentioned by Abe