Drag-and-Drop Sample

This sample has three examples of drag-and-drop functionality on a form in a Windows application.

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Security noteSecurity Note:

This sample code is intended to illustrate a concept, and it shows only the code that is relevant to that concept. It may not meet the security requirements for a specific environment, and it should not be used exactly as shown. We recommend that you add security and error-handling code to make your projects more secure and robust. Microsoft provides this sample code "AS IS" with no warranties.

To run this sample

  • Press F5.

Demonstrates

This sample has three examples of drag-and-drop.

  • TextBox   Demonstrates how to prevent a drop on a control. You can drag text from one TextBox control to two others, one of which does not have the AllowDrop property set to True.

  • TreeView   Demonstrates how to move nodes from one TreeView control to another.

  • PictureBox   Demonstrates how to copy images. You can drag images from one PictureBox to another. The AllowDrop property does not appear in the Properties window, and so is set to True in the code.

The data to be dragged should be an instance of the String, Bitmap, or MetaFile class, or an object that implements the ISerializable or IDataObject interface.

See Also

Tasks

Walkthrough: Performing a Drag-and-Drop Operation in Windows Forms

Reference

AllowDrop

Metafile

ISerializable

IDataObject