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Drag&Drop from a textbox - but still want to select text with the mouse

Posted on 2014-11-28
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Last Modified: 2014-12-01
I'd like to perform a drag&drop from a textbox to another textbox.
If I trap the MouseDown event and start the DoDragDrop then I can perform the drag&drop.
eg.
        private void textBox_Adress_MouseDown(object sender, MouseEventArgs e)
        {
            textBox_Adress.DoDragDrop(textBox_Adress.Text, DragDropEffects.Copy);
        }

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Unfortunately this then cripples the ability to select text within the textbox for modifying the contents of the textbox.
So.  How is the simplest way to allow the mouse to select text inside the textbox for editing AND allow the mouse to start a drag&drop of the complete contents of the textbox?
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Question by:AndyAinscow
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Accepted Solution

by:
Bob Learned earned 2000 total points
ID: 40471238
Andy,

I don't do much Windows Forms any more, but I wonder if you use the MouseMove event, checking the Left button, what affect that would have?
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LVL 40
ID: 40471296
Bob is right, you should use the MouseDown event. Look at the examples in the Control.DoDragDrop page of the online help, and you will get all the information that you need to perform the operation, from creating the icon or bitmap that will be used during the drag up to the moment the user drop what he was dragging.
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LVL 45

Author Comment

by:AndyAinscow
ID: 40471353
Hi Bob, that is what I was thinking as one backup plan (I've got a couple of others that are lower down the pecking order).  Check the mouse move and only start the DoDragDrop as the mouse leaves the text box (unless there is a specific event firing on the mouse leaving the control) providing the left button was down.

I asked just in case there was a simple way like:
txtBox.MagicSetting = MagicSettings.On;
and then everything would still work.  I like simple ways to do things.
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LVL 45

Author Comment

by:AndyAinscow
ID: 40471359
There is a MouseLeave event.  I'll look at using that.
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LVL 45

Author Closing Comment

by:AndyAinscow
ID: 40473193
The MouseLeave event didn't work as I hoped so I had to use the MouseMove in the end.   Turned out to be only a few lines of code
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