Seriously, Arsalan ! That's another great answer! Keep up the great work. ;-)
On Feb 13, 10:40 am, sallushan <[email protected]> wrote: > @Brandon: OP is talking about Windows Forms (see the link he has > provided). > > @Nacho108: > I assume you have understood the basic concept of passing data between > forms. Now coming to your issues: > > 1) In this article, every time I click the button it creates another > instance of the forms. > > Ans: Because each time the button is clicked, new instance of form is > created which is then shown. > Solution #1: > Use Application.OpenForms or create your own list of open forms. > Iterate through them to see whether the form is still open, if it is > then set focus on it. > Solution #2: > Use the class/module level variable of form and check the variable if > Form still exists (i.e. NOT closed and disposed) then set focus on it. > Solution #3: > Use the "ShowDialog()" method of Form. > > 2) In my case I'm trying to access the main form (in this case a > simple label) that was created by the visual studio and which is > already opened, from another form that is opened after that. > > Ans: If you are trying to access the "First" form "Second" form then > you need a reference of "First" form on "Second" form. > Solution #1: > If you have used the "ShowDialog()" method, then (after you call the > "ShowDialog()" method) check the properties of "Second" form and make > Changes on "First" form appropriately. > Solution #2: > If you have used the "Show()" method, then you need to use the > delegates/events in order to notify the "First" form that some changes > have occurred. > > Regards, > Arsalan Tamiz > > On Feb 12, 8:25 pm, Nacho108 <[email protected]> wrote: > > > > > Hi! > > > I'm having the c# typical beginner's problem (as far as I can read in > > forums) of passing data between forms. > > I was reading a lot about the subject but all the solutions I read are > > about creating a NEW instance of a form and then use delegates, or > > objects or class properties, etc. Like in this article: > > >http://www.codeproject.com/KB/cs/pass_data_between_forms.aspx > > > But the problems I'm having are: > > 1) In this article, every time I click the button it creates another > > instance of the forms. > > 2) In my case I'm trying to access the main form (in this case a > > simple label) that was created by the visual studio and which is > > already opened, from another form that is opened after that. > > > Maybe I'm missing very basic but I cannot understand how to face this > > problem. > > > Thanks in advance! > > Nacho- Hide quoted text - > > - Show quoted text -
