Open a form from a MenuStrip

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Hello there!

I am trying to open a form inside of a form I have 2 forms in my Solution Explorer
Form1 = main form
Form2 = the one I try to make pop up when pressing (Options) in the menu strip
but when I try to declare the Form2 in my code it doesnt want to show up

C#

Form2.Show();

doesnt want to to work, sorry for lack of information. In a hurry, just looking for quick fixes. any tips? If you need any more information please do tell me.

Posted 14-Nov-15 11:31am

BladeLogan

Updated 10-Aug-21 9:30am

v2

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ry sieł · Answer 1 · 2015-11-14T11:48:00

Solution 2

MenuStrip?
Double click on a item and simply add this code:

C#

Form2 nForm = new Form2();
nForm.TopLevel = false;
nForm.Show();

Posted 14-Nov-15 11:48am

ry sieł

Comments

BladeLogan 14-Nov-15 18:15pm

Hey! That worked, had to change the false to true, could you explain hopw that code works more in depth?

ry sieł 14-Nov-15 18:38pm

Top-level form is the form that haven't a parent form :) If nForm toplevel = false it haven't parent, otherwise it have parent form :) If nForm.TopLevel = true - nForm parent is Form1 :)

BladeLogan 14-Nov-15 18:44pm

Oh okay! That makes sence! What about the nForm, WHy are we calling it (nForm) (Wich I assume is short for newForm) why not Form2 wich is the name of my other form that I wanted to make pop up, is it just beacse that name is already used by something else? I hope I'm making any sence :p

ry sieł 14-Nov-15 19:08pm

Oh. From beggining...
You have:
Form1
Form2
MenuStrip on Form1
And when the item in MenuStrip is clicked you want to Form2 pop up?
If yes, you must set Form2 top-level to false, and show Form2
Like this:
<pre>
Form2.TopLevel = false;
Form2.Show();
</pre>
Yes?
You must set, the Form2 haven't got any parent. And show this outside the Form1. It's all :)

BladeLogan 14-Nov-15 19:11pm

Ooh okay! I am using Form2.TopLevel = true; at the moment, but if I want a child item lets say I have 3 stuff in the MenuStrip
File | Options | About
Exit | Themes

Lets say I want to make themes clickable with another form, THEN I use Form2.TopLevel = false; right?
otherwise if its not the child item, if it is the parent I would use
Form2.TopLevel = true; am I correct?

By the way, thank you for explaining!

ry sieł 14-Nov-15 19:20pm

No problem.
TopLevel is using to Form's parent defining.
If u want to Form2 have parent set it to true, otherwise to false.
I go out.
Good night.

BillWoodruff · Answer 2 · 2015-11-14T11:48:00

Assuming 'Form1 is your Main Form:

C#

private Form2 form2 = new Form2();

private void Form1_Load(object sender, EventArgs e)
{
    form2.Show();
}

Of course, this is a guess that you have failed to create an instance of 'Form2 to 'Show; however, not creating instances is a frequent mistake of people new to C#.

Member 15319745 · Answer 3 · 2021-08-10T09:30:00

Solution 3

Assuming this is your menu strip you want to load the net form from:

private void toolStripMenuItem1_Click(object sender, EventArgs e)
{
    Form2 nextForm = new Form2();
    nextForm.Show();
}

You need an object reference set to an instance of an object. By creating a variable called nextForm, we are doing just that.

Posted 10-Aug-21 9:30am

Member 15319745

Updated 10-Aug-21 9:33am

v2

Comments

Dave Kreskowiak 10-Aug-21 16:22pm

I seriously doubt the OP is still looking for an answer six years later.

Also, your answer is really no different from Solution 1.