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using System.Windows.Forms; namespace DetectUserControlClosing { public partial class UserControl1 : UserControl { public UserControl1() { InitializeComponent(); } protected override void OnCreateControl() { base.OnCreateControl(); this.ParentForm.FormClosing += new FormClosingEventHandler(ParentForm_FormClosing); } private void ParentForm_FormClosing(object sender, FormClosingEventArgs e) { Dia..

using WeifenLuo.WinFormsUI.Docking; namespace DockPanelSample { public partial class FormChild : DockContent { public FormChild() { InitializeComponent(); } } } using System; using System.Windows.Forms; namespace DockPanelSample { public partial class FormMain : Form { private FormChild formChild1; private FormChild formChild2; private FormChild formChild3; private FormChild formChild4; public F..

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using WeifenLuo.WinFormsUI.Docking; namespace DockPanelSample { public partial class FormChild : DockContent { public FormChild() { InitializeComponent(); } } } using System; using System.Collections.Generic; using System.ComponentMo..