How to change the background color of an MDI parent form in Visual C#:

Just copy and paste in load event of MDI Parent Form:

       

            MdiClient mdi;

            foreach (Control c in this.Controls)

            {

                try

                {

                    mdi = (MdiClient) c;

                    mdi.BackColor = Color.White;

                }

                catch

                {

                    //Unable to cast object of type 'System.Windows.Forms.Button' to type 'System.Windows.Forms.MdiClient'.

                }

            }