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I have the following case: I have a gridview on my page : page1.aspx I open another page( page2.aspx ) through that gridview in a rad window then after that,through some button on page2.aspx i open the last page ( page3.aspx ) in a rad window also. all these steps are performed through server side code : protected void OpenNewWindow(string url, int width, int height, int mode) { RadWindow newWindow = new RadWindow(); newWindow.NavigateUrl = url; newWindow.VisibleOnPageLoad = true; newWindow.KeepInScreenBounds = true; newWindow.Skin = "Metro"; if (width > 0) { newWindow.Width = width; } if (height > 0) { newWindow.Height = height; } newWindow.VisibleStatusbar = false; if (mode == 0) { { } //newWindow.OnClientClose = "OnChildWindowClosed"; newWindow.DestroyOnClose = true; newWindow.InitialBehaviors = WindowBehaviors.Maximize; } RadWindowManager1.Windows.Add(newWindow); } What i want to do is : when clicking on a specific button on my ( page3.aspx ) close it and its parent page2.aspx . How to do this (server side)? I try this :but it just closes the child page3.aspx i want to close the parent page2.aspx also ?! protected void Button1_Click(object sender, EventArgs e) { ((RadAjaxManager)this.Parent.FindControl("RadAjaxManager1")).ResponseScripts.Add("CloseModal();");

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