Setting splitContainer property sizes depending on Form size C# WinForms

Question

I am having trouble setting splitContainer sizes depending on my Form size.

When my form is loaded it is at a MinimumSize of 1170,930. But if I resize my form both .SplitterDistance and .Panel2MinSize are at different places then where they should be.

I have tried the following using the Form_SizeChanged event but it is not working correctly. Is there a way I can calculate .SplitterDistance and .Panel2MinSize to cater for the form resize.

private void MainForm_SizeChanged(object sender, EventArgs e)
{
    int x = this.Size.Height;         
    int y = this.MinimumSize.Height;   

    splitContainer1.SplitterDistance = splitContainer1.SplitterDistance + (x - y);
    splitContainer1.Panel2MinSize = splitContainer1.Panel2MinSize + (x - y);
}

Thanks in advance.

EDIT

Added some pics to give a better example below.

Form Standard (what it should look like)

Form Resized

Answer 1

It looks like you want to keep one of the Panels the same size, moving the splitter as the Form is resized.

There's a property to tell it whether the first or second Panel should remain "fixed" when resizing:

splitContainer1.FixedPanel = FixedPanel.Panel2;  // or FixedPanel.Panel1