how to close all open child forms in MDI parent through Program.cs class

Question

Vulpes · Answer

Another way to do it is loop backwards through the parent's MdiDchildren collection and close each child form as you do so: for(int i = this.MdiChildren.Length - 1; i >= 0; i--) { Form f = this.MdiChildren[i]; f.Close(); }

Hemant Srivastava · Answer

Create a List of Forms List lst = new List (); Iterate each open child form and put them into a list for (int i1 = 0; i1 { Form f = Application.OpenForms[i1]; if (f.IsMdiChild) lst.Add(f); } Then close all the forms: while (lst.Count > 0) { Form f = lst[0]; f.Close(); f.Dispose(); lst.RemoveAt(0); } If it helps you Please mark it accepted answer.