How to make a CheckBox unselectable?

Question

I was wondering how you make a CheckBox unselectable in c#? I thought it would be something like SetSelectable (false) or something but I can\'t seem to see th

Answer 1

In order to make a more read-only behavior:

• Disable highlight when the cursor is over the CheckBox
• Disable reacting (logically or visibly) to a mouse click
• Have tooltips enabled

We can inherit the CheckBox class (similar to Haris Hasan's answer but with some improvements):

public class ReadOnlyCheckBox : CheckBox
{
    [System.ComponentModel.Category("Behavior")]
    [System.ComponentModel.DefaultValue(false)]
    public bool ReadOnly { get; set; } = false;

    protected override void OnMouseEnter(EventArgs e)
    {
        // Disable highlight when the cursor is over the CheckBox
        if (!ReadOnly) base.OnMouseEnter(e);
    }

    protected override void OnMouseDown(MouseEventArgs e)
    {
        // Disable reacting (logically or visibly) to a mouse click
        if (!ReadOnly) base.OnMouseDown(e);
    }

    protected override void OnKeyDown(KeyEventArgs e)
    {
        // Suppress space key to disable checking/unchecking 
        if (!ReadOnly || e.KeyData != Keys.Space) base.OnKeyDown(e);
    }
}