The split button performs a specified action when clicked; it can also act as a drop-down button and can display both text and images. When you click the right-most portion of the split button, it displays drop-down items.
The size of the split button control can be easily changed using the SizeMode property, which contains the following values: small, normal, and large.
Images can be displayed in the control by using two properties: SmallIcon is used to set an image when SizeMode is normal or small. LargeIcon is used to set an image when SizeMode is large.
The direction in which a menu can drop down can be changed using the DropDirection property. The following directions can be specified: left, right, bottom-left, bottom-right, top-left, and top-right.
The drop-down menu group supports resizing, if the IsResizable property is set to true.