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How do I ensure that no more than one instance of modeless dialog is created or open at a time?

April 26, 2017dialog ensure instance modeless time

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How do I ensure that no more than one instance of modeless dialog is created or open at a time?

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One way to do this is to maintain a list of opened modeless dialogs, and check this list before you open a new one to see if one is already present. If you open all these modeless dialog’s from the same ‘main’ form, then you can use the OwnedForms…