How to auto resize and adjust Form controls with change in resolution

Use Dock and Anchor properties. Here is a good article. Note that these will handle changes when maximizing/minimizing. That is a little different that if the screen resolution changes, but it will be along the same idea.

Use combinations of these to get the desired result:

1. Set Anchor property to None, the controls will not be resized, they only shift their position.

2. Set Anchor property to Top+Bottom+Left+Right, the controls will be resized but they don't change their position.

3. Set the Minimum Size of the form to a proper value.

4. Set Dock property.

5. Use Form Resize event to change whatever you want

I don't know how font size (label, textbox, combobox, etc.) will be affected in (1) - (4), but it can be controlled in (5).

float widthRatio = Screen.PrimaryScreen.Bounds.Width / 1280;
float heightRatio = Screen.PrimaryScreen.Bounds.Height / 800f;
SizeF scale = new SizeF(widthRatio, heightRatio);
this.Scale(scale);
foreach (Control control in this.Controls)
{
control.Font = new Font("Verdana", control.Font.SizeInPoints * heightRatio * widthRatio);
}