C # Write a few sections of WinForm MDI form control code sharing

　　

        /// <summary>        ///function: Set the main form size to the display workspace size in the MDI program/// </summary>        /// <param name= "mainform" >main form Instance</param>         Public Static voidsetmainformsize (Form mainform) {mainform.location=NewPoint (0,0); Mainform.width=Screen.PrimaryScreen.WorkingArea.Width; Mainform.height=Screen.PrimaryScreen.WorkingArea.Height; }

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        /// <summary>        ///function: Child form size in MDI program is parent form workspace size/// </summary>        /// <param name= "MDIForm" >child Form Instance</param>         Public Static voidsetmdichildsize (Form mdiform) {mdiform.location=NewPoint (0,0); Mdiform.width=MdiForm.Parent.ClientSize.Width; Mdiform.height=MdiForm.Parent.ClientSize.Height; }

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        /// <summary>        ///function: Close all open MDI child forms/// </summary>        /// <param name= "mainform" >parameters: Parent Form</param>         Public Static voidcloseallmdiforms (Form mainform) {if(MainForm.MdiChildren.Length <=0)            {                return; }            Else            {                foreach(Form SubforminchMainform.mdichildren) {subform.close (); }            }        }

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        /// <summary>        ///function: Detects MDI child form state changes, restores default state when a subform is minimized or maximized/// </summary>        /// <param name= "MDIForm" >child Form Instance</param>         Public Static voidsetmdiformstate (Form mdiform) {if(MDIForm = =NULL)            {                return; }            Else if((mdiform.windowstate = = formwindowstate.minimized) | | (mdiform.windowstate==formwindowstate.maximized)) {mdiform.windowstate=Formwindowstate.normal; }        }

C # Write a few sections of WinForm MDI form control code sharing