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.Net FormStartPosition.CenterScreen does not center

I am trying to center a form in VB.net. Rather than centering the shape, it ends up about halfway between center and 0.0 (top left).

I am using code

Me.StartPosition = FormStartPosition.CenterScreen

which is called from the IntializeDisplay method, which in turn is called from the Load Load method.

I am guessing that I am setting some properties on the path that messed up the center calculation, but I am not sure what that might be.

If anyone has any ideas, they will be highly appreciated.

Thank.

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5 answers


add this to the event and it will work:



Public Sub New()

    ' This call is required by the Windows Form Designer.
    InitializeComponent()
    ' Add any initialization after the InitializeComponent() call.
    Me.StartPosition = FormStartPosition.CenterScreen

End Sub
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I think you are setting the StartPosition value too late in the thread - by the time Form.Load appears, the Loading is already complete and the form has an assigned position.

Set a breakpoint on the line of code mentioned in your question and look at the position of the form - it will already be where it is displayed.



To get the desired effect, the StartPosition value must be set before the form can begin its "inline position processing". I would suggest putting the code in the form constructor after calling InitializeComponent ().

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If you are resizing the form or using auto size, you need to use

    Me.CenterToScreen()

at the end of the Load event.

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Is there some form of resizing / positioning logic? If yes, please comment on this and try again.

Try setting Form.StartPosition

in the constructor (which will set it to InitializeComponent()

) rather than the Load event.

Try to reset the values Form.Location

and Form.Size

. If your form is localized, remove the Form.Location

AND entry Form.Size

in the resource file.

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Instead of relying on form initialization to handle its original location, try calling a method to center the form. This allows you to center the form even after resizing after showing.

Example:

Me.CenterToScreen()

or

Me.CenterToParent()

Depending on where you are trying to center the shape.

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