How does one see to that only a single instance of a MDI Child is open.
If the user clicks the menu item again; it should display the already opened child form?
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How does one see to that only a single instance of a MDI Child is open.
If the user clicks the menu item again; it should display the already opened child form?
Use the mdiChildren collection of your Parent form to provide a list of all the open forms. Use this list to find out if your for is open or not. If you need help opening a form let me know.