User Guide > How to Work with... > Windows Forms > Using ImageGear.Windows.Forms.Thumbnails Namespace > The GUI Thumbnail Window > Loading |
The thumbnail items are created in response to calls to DirectoryAppend Method, FileAppend Method, PageAppend Method, or DocumentAppend Method. The thumbnail items can also be created in response to the user dragging and dropping a file-icon from Windows Explorer onto the ImGearThumbnailCtl Class control. This will cause the BeforeLoad and AfterLoad event handlers to be called exactly as if the FileAppend Method had been called.