避免将Control的默认属性包含在设计时序列化中

Question

I have UserControl, created half in VS Designer and half in code. I want to create new instance of this UserControl from code, but set some of its default properties to different values every time.
Example (edit w real code):

// in my Main Form..
var newFrame = new RPictureFrame(); // my UserControl
newFrame.Width = 50;
newFrame.Height = 50;
newFrame.Location = new Point(0,0);
this.Controls.Add(newFrame);

newFrame = new RPictureFrame();
newFrame.Width = 200;
newFrame.Height = 400;
newFrame.Location = new Point(0,150);
this.Controls.Add(newFrame);

Original wrong example:

var newMyUserControl1 = new MyUserControl();  
newMyUserControl1.size.Width = 50;  

var newMyUserControl2 = new MyUserControl();  
newMyUserControl2.size.Width = 200;

What sometimes happen though is the new value set by me right after creating the new instance of control seem to get ignored.
My only explanation is, that since my UserControl is designed in Designer, all its default properties are in fact kept serialised in .resx file (?). When I create new instance in runtime, a deserialisation is started in separate thread (I have no control of). When I set some of the properties accidentaly before they get deserialised, my value gets overwriten by the ser'd value right after. I didn't find any info about how the creation of Designer-created controls work, so this is of course just my guess.

My question is, how to get around it ? Possibly some easy way.

The things I tried:

1- In my UserControl code:

[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public Size size;

..to remove the standard properties from Design-time serialisation. But (compiler says) I'm only hiding the existing standard property. Plus it of course doesn't work. I am still a beginner in c# & .NET so maybe I'm just doing it wrong ?

2- I think I can subscribe to each new control's (on)Load event, let it fully deserialize, and then set what I need. But it seems very cumbersome in code, the properties will needlessly get set twice (or more) etc. Basically I don't believe there isn't more elegant solution :)

Will be glad for any advices

Answer 1

Updated Answer:

Based on your new code:

newFrame.Width = 50;
newFrame.Height = 50;

Change that to:

newFrame.Size = new Size(50, 50);

You'll notice that pattern is being used for Location as well.

Original Answer:

When changing the size of a control you have to da new Size variable, since it's a value type.

Your code should be:

newMyUserControl1.size = new Size(50, newMyUserControl1.size.Height);

Check out this link:

http://msdn.microsoft.com/en-us/library/system.windows.forms.control.size.aspx