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Autosizing controls issues

I'm having a problem with auto sizing all of the controls on my WPF. I'm able to get them too stay on the side of the screen where I want them, the only problem is that, when I have the window the same size as the editor, it looks perfect, however, when I change too full screen (Has too be full screen), it centers everything rather then stretching too fit across the entire window.
Any idea how I could go about fixing this? I have provided a few photos.
After doing a lot of research, I found putting it in a panel, and then making the panel Anchor too none and then setting the Alignment too none, it fixed the windowed version but not full screen version. Any help would be great.
I'm setting the window too full screen with this.WindowState = FormWindowState.Maximized; if that makes any difference at all?

The grid should help you with that, just define columnas and rows. Then put the controls inside the rows and change the alignment (vertical and horizontal) to stretch and you are done.
You will have a problem with the text size, that need tl be managed in code behind or in your viewmodel
If you want a control to span on múltiple rows or multiple columns use the grid.rowspan and grid. Columnspan properties.
Sorry for the bad formatting, im on the phone

Make DataGridView stretch to middle of WinForms form?

I have a WinForm form that has two DataGridView controls paced on it such that they are stacked, one above the other against the right hand side of the form.
I would like a way of setting them so that when I expand the form, they expand height-wise with it, as well as width-wise. I managed width-wise by anchoring them to the left and right sides and anchoring the top one to the top and the bottom one to the bottom. However, from here I'm not sure how to get them to use up the space in the middle that appears when the form maximizes...Maybe an image will make my meaning clearer:
Normal Size:
Maxmized; I'd like the grids to expand to take up the full height of the form between the two of them as the red arrows show:
If this question is blindingly obvious I apologise and can only say I didn't really know how to phrase it properly and so found searching for it on Google unhelpful!

You have two options:
TableLayoutPanel or
SplitContainer
The former lets you create a table of many columns and/or rows with various sizing options from absolute and percent to autosize. This is very powerful for layout; but in other respects TLPs are somewhat restricted as the 'cells' are only virtual..
A SplitContainer offers only two panes but lets you treat each with all the things you can do to a container: add one or more controls, anchor or dock them, give each pane a BackColor and make use of its event model.
So if you need just two controls of equal size that adapt to the form size like you showed in the question, a SplitContainer is maybe the better option.
Set the splitter to fixed and make it smaller, anchor the SplitContainer to all sides and drop the DGVs into their panes and Dock them to Fill.
You could also make the splitter moveable to allow the user to resize the panes; if you do that do make the splitter width larger..
Also make sure that the FixedPanel is set to None so that height changes are shared.
Hint: If you want a few more panes to share the space you can nest several SplitContainers.. But for larger numbers do consider switching to TLP!

How to deal with controls and form's stretching in WinForms

Suppose that I have the following form in Designer:
I want to give users the ability to stretch this form as they want and all controls should be located like in the picture, no matter how user changed the size of this form, so they should take the same amount of space and stick to the same controls and borders.
How can I do it in WinForms? I know that there are such things like Docks etc, but I didn't find the correct way to use them in this situation.

You want the Anchor property in this case, not Dock. Anchoring means that a control will always keep the same distance to certain sides (top, left, right, and/or bottom) even if it means that the size must be changed; docking OTOH does not care about margins, it just fills up all available space on one or all sides.
Here's what you might want to do:
Anchor the two image buttons to the top and right.
Anchor the OK button to the right and bottom (I guess).
Anchor the large ListBox to all sides.

Just To Add some notes on good answer of stakx
For Controls Like ListBox that have a limit to their height, setting anchor is not enough and you should set IntegralHeight of them to false.
I reccomend to set MinimumSize of Form to prevent a user from sizing a window to an undesirable size.In your case Set it to a minimum acceptable size to prevent ugly small form with an unusable ListBox.

C# positioning buttons

I have 3 buttons in my form. What I need to do is when I make the actual form bigger or smaller, the buttons should change their position and size so they look good, so they wouldn't remain the same size and position. I tried to use the anchors, but that does not work very well. What can I use to solve my problem?

You can check dock and anchor properties
http://www.youtube.com/watch?v=afsx1IJULLI
http://msdn.microsoft.com/en-us/library/system.windows.forms.control.dock(v=vs.110).aspx

You should set both left and right, or top and bottom anchors to resize control. If you'll set only one anchor from these pairs, then control will be positioned instead of resizing.
Docking will resize control, because it is equivalent of setting three or more anchors.

Try using TableLayoutPanel, put your buttons inside the columns of the table

Look good is different all the time. I like placing buttons in StackPanel and setting AutoSize property to true. This fixes two issues:
If user has 150% font in Windows settings - your UI does not break;
if you resize window to be very small - your buttons do not enforce minimal width/height and adapt to ratio user has chosen

Best Way to make a Windows Forms scalable?

What would be the best way to make a WinForms application fully scalable, for example when the Form resizes?
In WPF i would use something like a Viewbox and/or a UniformGrid, but something like this doesn't exists in WinForms.
Is there an easier (and maybe faster) way to rescale controls on a from after resizing it, instead of resizing them all by calculating their new Size/Location etc.?
Thanks in advance

In Windows Forms, you use the Anchor and Dock properties for each control.
Here's an article about using them: http://www.techrepublic.com/article/manage-winform-controls-using-the-anchor-and-dock-properties/
You should also look at FlowLayoutPanel and TableLayoutPanel

you can use anchor and dock, depending on your need:
Anchor - the edges of the container to which a control is bound and determines how a control is resized with its parent.
Dock - which control borders are docked to its parent control and determines how a control is resized with its parent.
for further read: Dock and Anchor

Have a look at the Anchor property found on pretty much any control. This allows you to lock a control to any (or all) of the four borders of a window.
Once one distance is anchored (e.g. Top or Right), the control will always try to keep that distance, no matter how you resize your window.
For example, you'd set Anchor to Bottom and Right for a button that is supposed to always stay in the bottom right corner of a window. A text box, that should always fill the window from left to right would use Left and Right.
Similar things can be achieved utilizing Dock, but a docked control will always try to fill as much space as possible (there are different strategies available, like "fill everything from here and upwards) based on its container. Depending on your use case, this can however be a lot harder to control (and I usually only use it if I want a single control to fill a full window, e.g. a TextBox).
If you need more complex alignment, like widths scaled on some kind of ratio (e.g. 30%), then there are several different containers available.