Perfom action on the mdi parent form when child form close: c# mdiContainer

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Hi delta_v;

Use the childs Closing or Closed events to perform the action on the MDI parent form. See code snippet.

Fernando

// MID Parent Form
 
public partial class MDIParent : Form
{
    public MDIParent()
    {
        InitializeComponent();
    }
 
    private void createChildToolStripMenuItem_Click(object sender, EventArgs e)
    {
        ChildForm cf = new ChildForm();
        cf.TopLevel = false;
        cf.Parent = this;
        cf.Show();
    }
 
    public void DisplayMessage(string msg)
    {
        MessageBox.Show(msg);
    }
}
 
// Child Form
 
public partial class ChildForm : Form
{
    public ChildForm()
    {
        InitializeComponent();
    }
 
    // Calling function in MDIParent form BEFORE child form is closed
    private void ChildForm_FormClosing(object sender, FormClosingEventArgs e)
    {
        ((MDIParent)this.Parent).DisplayMessage("Child Form Closing");
    }
 
    // Calling function in MDIParent form AFTER child form is closed
    private void ChildForm_FormClosed(object sender, FormClosedEventArgs e)
    {
        ((MDIParent)this.Parent).DisplayMessage("Child Form Closed");
    }
}

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Perfom action on the mdi parent form when child form close

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