Icon inside of button?

In WinForms use Button.Image (MSDN) like this:

private void SetMyButtonIcon()
 {
    // Assign an image to the button.
    button1.Image = Image.FromFile("C:\\Graphics\\My.ico");
    // Align the image and text on the button.
    button1.ImageAlign = ContentAlignment.MiddleRight;    
    button1.TextAlign = ContentAlignment.MiddleLeft;
 }

and you can use Button.TextImageRelation Property to set the position of text and image relative to each other:

• Overlay: image and text share the same space on a control.
• ImageBeforeText: the image is displayed horizontally before the text of a control.
• TextBeforeImage: the text is displayed horizontally before the image of a control.
• ImageAboveText: the image is displayed vertically above the text of a control.
• TextAboveImage: the text is displayed vertically above the image of a control.