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Prevent Windows form elements from leaving view when resizing from the bottom?

I have a form set up as shown in the picture below. The form simply contains a SplitContainer with two TreeViews in each of the panels, plus the label above the TreeView.
Here's a picture of the form that has not yet been resized:
Each TreeView is anchored to the Top and Left, and docked to the Bottom.
Each label is anchored to the Top and Left.
The SplitContainer is anchored to the Bottom, Left, and Right.
The above settings allow me to resize the TreeViews equally when the form is resized. However, when I resize the form's height, the labels (and of course the TreeViews as well) are pushed out of the form view, as shown in this picture:
How can I prevent the elements from being pushed past the title bar? Preferrably without the use of a SizeChanged event. I have tried adding padding to the form, as well as trying different docking/anchor modes, but I have been unable to restrict this.

Perform the following steps in order:
Either anchor the SplitContainer to all 4 sides or dock-fill it.
Place the labels on the panels. Make them smaller than the panels, in order to be sure that they really become child controls of the panels (and not of the form). Set their Dock property to Top.
Place the TreeViews on the panel. It is important that this is done after you placed and docked the labels! Same thing here: make them smaller than the panels. Then set their Dock property to Fill.
Note: you can either dock or anchor a control, but not both! The Anchor property is ignored if Dock is something else than None. An anchored edge keeps a constant distance to the side it is anchored to. If an edge is not anchored, the size of the control in this direction will remain unchanged. If two corresponding edges (e.g. left and right) are not anchored, then the control will be centered in this direction.
See: Manage WinForm controls using the Anchor and Dock properties

Set SplitContainer.Dock = DockStyle.Fill; if thats the only thing appearing on the form.

Get really usable area of a Groupbox

In Windows Forms, when I position a label control at Y=0 inside a groupbox, then the label intersects with the title text on top of the groupbox.
How can I get the usable area within the Groupbox, i.e. the are that's not obstructed by the title text of the box?
Setting control.Y = groupBox.Padding.Top doesn't work. And Groupbox.ClientRectangle doesn't take the text into account either.
Edit: There is an easy hack to get that inner rectangle: Simply position one Labelin the GroupBox, and set it's Dock property to Fill. Then you can get the relevant information (Top/Bottom/Left/Right) from the Panel, or simply use the panel directly to add your child controls.
However, I'd still like to know how to get those coordinates without such hacks.

Try using the DisplayRectangle property:
The DisplayRectangle property returns the client rectangle of the display area of the control. For the base control class, this is equal to the client rectangle. However, inheriting controls might want to change this if their client area differs from their display area. The display rectangle is the smallest Rectangle that encloses a control and is used to lay out controls.
Example:
label1.Location = groupBox1.DisplayRectangle.Location;

Quite old thread, but here is what I use for my controls :
label1.Location = new Point(0,(int)(groupBox1.Font.Size)*2);
And this is how it looks with different text sizes.

Resizing contents inside DevExpress Docking Panels

I am attempting to add three panels to a window using a Devexpress Docking manager and dockable panels. Here are the current results:
The three panels are placed and sized how I would like them however their contents will not correctly resize as I resize the window. This first image indicates this by the Picturebox that fails to fill the window. My current attempt to regulate this is: (Panel3 refers to a panel that contains pictureBox1. which in turn is contained by dp3.)
void dp3_SizeChanged(object sender, EventArgs e)
{
panel3.Size = panel3.Parent.Size;
pictureBox1.Width = dp3.Width;
pictureBox1.Height = dp3.Height;
}
The Same is true for the Controls Window. I have controls that do not appear unless the window is grossly oversized.
The controls are contained in 4 seperate panels that are themselves contained in the dockable window.
How do I make things appear the correct size and location whendocking and resizing?

Go throught this DevX article - Designing Resizable Windows Forms in
Visual Studio .NET-2,
that i like most for understanding about layout in Winforms.
You should set the Anchor and Dock properties on the controls in the forms.
The Anchor property controls which edges of a control are "bound" or "tied" to the corresponding edges of its form.
For example, if you set Anchor to Bottom, the distance between the control's bottom edge and the bottom of its parent will not change, so the control will move down as you resize the form.
If you set Anchor to Top | Bottom, the control will resize vertically as you resize the form.
To make a control resize with the form, set the Anchor to all four sides, or set Dock to Fill.
You can set the control's Dock property to Fill. This will cause the control to fill it's parent container.
You may still need to write some code to handle laying out the child controls. You can either do this by handling the Resize event, or by using a container that supports resizing for you (such as FlowLayoutPanel or TableLayoutPanel).
Use your Control's Anchor property. You'll probably need to set it to all sides, Top, Bottom, Left, Right, if you want it to resize according to parent control in all four directions
If you want to Maintain the controls Aspect Ratio on Resize, You'll need to store off the aspect ratio somehow, whether it's something known to you at design time or if you just want to calculate it in the constructor of the form after InitializeComponent(). In your form's Resize event,

Custom anchoring in Windows Forms

I have a custom form that has 4 panels on it edges. I would like to anchor another panel to contain user controls to the visible edges of the form. Once that is done I would then like to anchor an undetermined number of controls to the already anchored panel. I am rather new to this and I do not know that this is the best way to achieve my goal of having a list of objects that resize as the form is resized. The reason I am working at it from this angle is I want the objects to be clickable, and moveable, not just text lines.
My thought is something like this.
----------------------------------------
| Header Panel |
----------------------------------------
|| <--left panel right panel->||
|| [ user control object ]||
|| [ user control object ]||
|| [ user control object ]||
|| [ user control object ]||
----------------------------------------
| Bottom Panel |
----------------------------------------
Currently I am able to draw the panel that holds the user control objects as desired, but it does not resize with the parent, and when I try to anchor it to the parent, it anchors to the wrong place. I have also attempted to anchor the user control objects to the user control panel but they are not resizing at all.
So here is the code for the container panel
//This is called after InitializeComponent(), I would assume the anchor would go
//in here somewhere, but I need the anchor to be offset by the bounds of the
//other panels as listed below.
private static void SetQuestionContainerBounds(SessionReviewForm instance)
{
instance.pnlQuestionContainer.Top = instance.HeaderPanel.Bottom;
instance.pnlQuestionContainer.Left = instance.LeftPanel.Right;
instance.pnlQuestionContainer.Width = instance.RightPanel.Left - instance.pnlQuestionContainer.Left;
instance.pnlQuestionContainer.Height = instance.StatusPanel.Top - instance.pnlQuestionContainer.Top;
}
After I make the form and position the pnlQuestionContainer, I then start making user controls called base question objects, anchor them, and added them to the pnlQuestionContainer
private void DisplayData()
{
// tracks the number of questions, used in placement of objects
int questionCount = 0;
// if the session question is marked for review
// generate a new question object and place it.
foreach (SessionQuestion sq in thisSessionPart.SessionQuestions)
{
if(sq.MarkForReview)
{
BaseQuestionObject bqo = new BaseQuestionObject(sq, parentSession);
BaseQuestionObject.FitAndPlaceObject(pnlQuestionContainer, bqo, questionCount);
bqo.Anchor = (AnchorStyles.Left | AnchorStyles.Right);
pnlQuestionContainer.Controls.Add(bqo);
questionCount++;
}
}
}
A base question object is made up of three parts at the moment. A userControl, a group box, and a label. All of these items are set to autosize with anchor of left, right with the exception of the user control as I cant set that in the properties window, but I think i am setting it in the above method.
The current results are that the container panel is drawn perfectly at first, but it never resizes. The question objects are drawn at the same size that they were made, though this is not the max or the min size.
[EDIT]
The issue I had was the anchor styles were not playing nice with autosize. After turning autosize off and manipulating the anchorStyles I was able to get the desired results.

First, I'm not 100% sure of what you are trying to do but anchoring is much simpler than the way you are trying to achieve it.
Each control has a property called Anchor which is an AnchorStyles enumeration. These values can be Left, Right, Top, Bottom or None and can be bitwised ORed together to allow for multiple anchoring values.
The default 'Anchor' value is Top-Left. If you change the anchoring to Top-Right your controls will remain the same size, but will "float" with the right-side of your application window as it is resized. If you anchor to the Left, Top and Right, your controls will grow and shrink as you resize the width of your window.
I do not believe that you should need any of these panels, unless they are used to logically group controls together. You can experiment with the anchoring by placing a bunch of controls on a form and changing their anchor settings. Run your test form and resize it and see what happens.
Additionally, if you would like to re-arrange the contents of your form as the Window grows and shrinks, the standard MS toolbox has a few controls that you can play around with. Specifically, check out the FlowLayoutPanel and TableLayoutPanel. You can use these controls to fine tune how you want to reposition your child controls on a form or in a section of a form.

Best way to make Windows Forms forms resizable

I am working on a largish C# project with a lot of Windows Forms forms that, even though you can resize the form, the elements in the form don't scale.
How can I make the form elements (such as the datagridview, text area's, etc.) scale when the user changes the size of the form?
Nearly all the forms subclass from one specific form, so if there's something I can do in the base class, that'd be great.

You should set the Anchor and Dock properties on the controls in the forms.
The Anchor property controls which edges of a control are "bound" or "tied" to the corresponding edges of its form.
For example, if you set Anchor to Bottom, the distance between the control's bottom edge and the bottom of its parent will not change, so the control will move down as you resize the form.
If you set Anchor to Top | Bottom, the control will resize vertically as you resize the form.
To make a control resize with the form, set the Anchor to all four sides, or set Dock to Fill.

Use the Anchor and Dock properties.
Anchor allows you to pin specific sides of the control to the sides of the parent control.
Dock will bind the whole control to a side of the parent control or it can be set to fill the contents of the parent control.
You usually just need to set the Anchor to the bottom and right of the parent control but gets more difficult when you have controls side by side, then you need to manually resize the controls on the forms OnResize event to get them to scale naturally together.