Visual C# Unable to alter size or position of form

[Kevin R]

Hi
I have this in a method which is called when my form is created

public CreateDevice()
{
// Set the initial size of our form
this.Top = 0;
this.Left = 0;
this.Size = new System.Drawing.Size(500,800);
//this.ClientSize = new System.Drawing.Size(400,300);
// And it's caption
this.Text = "Rhubarb: CreateDevice";
// Load our icon from the resources of the .exe
this.Icon = new Icon(this.GetType(), "directx.ico");
}

the method is being called OK, because the forms text is being set to
what ever I want it to be. But attempts to set the Top, Left or Size
members are having no effect at all, the same with attempts to set the
ClientSize member.
I can resize the form by dragging, when it is running.
I am completely new to C# so it may be something really dumb.

Any ideas

Kevin R.

 

[Kevin R]

Hi
I have this in a method which is called when my form is created

public CreateDevice()
{
// Set the initial size of our form
this.Top = 0;
this.Left = 0;
this.Size = new System.Drawing.Size(500,800);
//this.ClientSize = new System.Drawing.Size(400,300);
// And it's caption
this.Text = "Rhubarb: CreateDevice";
// Load our icon from the resources of the .exe
this.Icon = new Icon(this.GetType(), "directx.ico");
}

the method is being called OK, because the forms text is being set to
what ever I want it to be. But attempts to set the Top, Left or Size
members are having no effect at all, the same with attempts to set the
ClientSize member.
I can resize the form by dragging, when it is running.
I am completely new to C# so it may be something really dumb.

Any ideas

Kevin R.

The form is actually called CreateDevice. Hence the method above is
the constructor.

I can set the Left and Top properties dynamically provided that at
design time I set the form's StartPosition property to Manual.

If I move my attempts to set the size to the InitializeComponent()
method then all is OK.

Strange that I can set the Text, Left and Top properties within the
constructor, but not the Size property. I am probably missing
something.

Problem is sorted for know, but I would be interested to know what the
problem with doing this in the constructor was.

Kevin R.

 

[Ken Allen]

In general, these types of changes should be made in the Load() handler,
and not in the constructor, as the underlying Windows objects do not yet
exist.

-ken