DXWIN0005: A Form Dialog is Never Disposed

• Jul 02, 2024

Severity: Warning

Any Form displayed as a dialog (with the System.Windows.Forms.Form.ShowDialog method) must be disposed when not needed anymore. Otherwise, it may cause memory leaks.

Invalid Code

Form dialog1 = new Form();
dialog1.ShowDialog();

Valid Code

using (Form dialog1 = new Form()) {
    dialog1.ShowDialog();
}

// or

Form dialog1 = new Form();
dialog1.ShowDialog();
dialog1.Dispose();