Open second formin c#

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how to open second form from first form in c# ?

Posted 13-Mar-12 19:54pm

Janardan Pandey

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Aniket Yadav 14-Mar-12 1:59am

Is it MDI application?

Janardan Pandey 14-Mar-12 2:02am

it is window application

Sergey Alexandrovich Kryukov 14-Mar-12 2:21am

Not an answer. Please answer if it MDI or not (and better don't use MDI, who needs it?).
--SA

Janardan Pandey 14-Mar-12 4:39am

It is an MDI application

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Sergey Alexandrovich Kryukov · Answer 1 · 2012-03-13T20:28:00

There is a little trick in it, so many beginners get confused when reading a usual MSDN help page:
http://msdn.microsoft.com/en-us/library/system.windows.forms.form.aspx[^].

The reason is: there is no such concept as "open a form", even though a form can be closed. You simply create a form with its constructor and later call the method Show or ShowDialog to show imitating modal dialog behavior. However, I strongly recommend to use the relationship owned form / owner form, so better keep the main form and owner of all other non-modal forms, use AddOwnedForm, please see:
http://msdn.microsoft.com/en-us/library/system.windows.forms.form.addownedform.aspx[^].

That's it.

And yes, better never use MDI, don't torture yourself and scare off your users with this ugly design style. If you have questions on it, I'll explain.

—SA

Agung Gugiaji · Answer 2 · 2012-03-13T20:39:00

Solution 2

Hi,

Create a form in your Visual Studio and then specify name of your to be open form, i.e 'openedform'

Use code below at button click or whatever:

C#

openedform frm = new openedform();
frm.Show(); // or frm.ShowDialog() to open a form as dialog

Hope this help.

Posted 13-Mar-12 20:39pm

Agung Gugiaji

Vinay Swa · Answer 3 · 2012-03-13T21:32:00

Hi,
when you create application it is provided with 1 from. Just Right click on the project and add new form.
then create a object for the Form2 in Form1 Class.
Form2 objForm2 = new Form2();
objform2.Show();

Further, if you want to change any thing in Form1 form Form2, better to send the current object of form1 to Form2, this way

Form2 objForm2 = new Form2(this);
objform2.Show();

create a copy constructor for the Form2.

Open second formin c#

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