System.Windows.Forms 2.0.0.0 System.Enum System.Flags To be added. Specifies controls that are visible in the designer. Field System.Windows.Forms.Design.ToolStripItemDesignerAvailability Specifies that all controls are visible. 2.0.0.0 Field System.Windows.Forms.Design.ToolStripItemDesignerAvailability Specifies that is visible. 2.0.0.0 Field System.Windows.Forms.Design.ToolStripItemDesignerAvailability Specifies that is visible. 2.0.0.0 Field System.Windows.Forms.Design.ToolStripItemDesignerAvailability Specifies that no controls are visible. 2.0.0.0 Field System.Windows.Forms.Design.ToolStripItemDesignerAvailability Specifies that is visible. 2.0.0.0 Field System.Windows.Forms.Design.ToolStripItemDesignerAvailability Specifies that is visible. 2.0.0.0