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Form open more than 1 time c#
Hello. So i have a problem that my form more than 1 time.
How can i check if the form is open and if it opened i show?
8/22/2022 - Mon
Check this links:
Or google for Single Instance form in c#
If you are talking about the application in whole (main form) the following may help:
However, if you are talking about one of "secondary" forms, i.e. forms you are opening from your application, you may just check a reference to a form. You have to have an only variable to reference the form. If it is nothing - you create and open a new form. If not - show existing form.
public static void OpenForm(Type frmType)
bool bolCtl = false;
foreach (Form form in Application.OpenForms)
bolCtl = true;
Form frm = (Form)Activator.CreateInst
public static void LoadForm1()
//Login _form1 = new Login();
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