Positing A Form at run time in C#

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Hi All,

I have been asked to position a Form in the center of the screen. I have in the past used the Location for this (back in the day VB6 used to have a picture of where the form would appear, wow something I miss about VB6!) but I think this program is going to be used on many things (Net books, (shudder!) Tablets). It just in looking around I have found Form and Control Position and Size Utility[^] which seems a little too indepth for what I am after.

Sorry
Glenn,
Ah I have found Windows Forms - Creating and Loading the Main Window Form and Child Control States Using C#[^] will this give what I am looking for!

Posted 17-Jan-13 3:52am

glennPattonWork3

Updated 17-Jan-13 3:56am

v2

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BillWoodruff 17-Jan-13 11:05am

Setting the FormStartPosition property seemed so obvious to me, that I thought your question was going to be: how to keep the Form in the center of the Screen when the Form is re-sized at run-time :)

3 solutions

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**Zoltán Zörgő** · Answer 1 · 2013-01-17T03:59:00

Solution 1

Try this:

C#

form.Location = new Point((Screen.PrimaryScreen.Bounds.Size.Width / 2) - (form.Size.Width / 2), (Screen.PrimaryScreen.Bounds.Size.Height / 2) - (form.Size.Height / 2));

Posted 17-Jan-13 3:59am

Zoltán Zörgő

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glennPattonWork3 17-Jan-13 10:10am

I can see to get this to work...
I have had to mod the line Form1.Location =
new Point((Screen.PrimaryScreen.Bounds.Size.Width / 2) - (Form1.Size.Width / 2), (Screen.PrimaryScreen.Bounds.Size.Height / 2) - (Form1.Size.Height / 2));
so all reference are to Form1 rather than form I have tried it after InitalizeComponents in the public Form1, in the Form1_Load() it seems to error on
the Form1 refernces pasted message Error 1 An object reference is required for the non-static field, method, or property 'System.Windows.Forms.Form.Location.get'

Daniele Rota Nodari · Answer 2 · 2013-01-17T04:00:00

Solution 2

Hi.

If you are working with Windows Forms...

You can set StartPosition property directly from designer or through code, just before showing it.

form.StartPosition = FormStartPosition.CenterScreen;

Possible values are:
Manual
CenterScreen
WindowsDefaultLocation
WindowsDefaultBounds
CenterParent

Form.StartPosition Property
FormStartPosition Enumeration

Daniele.

Posted 17-Jan-13 4:00am

Daniele Rota Nodari

Comments

glennPattonWork3 17-Jan-13 10:19am

Ahh, thanks for that!
Glenn

Daniele Rota Nodari 17-Jan-13 14:12pm

Someone did not like this solution.
Can this one kindly explain what's wrong?

glennPattonWork3 18-Jan-13 7:58am

Not me sir!

Daniele Rota Nodari 18-Jan-13 8:17am

I know :) and I hope it really solved your issue.

glennPattonWork3 · Answer 3 · 2013-01-18T01:57:00

Solution 3

Or you could use the tool in the Form designer, called Start Position, I am sorry for wasting time. Just got home looked at Visual Studio and swore!

Posted 18-Jan-13 1:57am

glennPattonWork3