How to disable a checkbox in a checkedlistbox?

Question

I have some items in a CheckedListBox, I want to disable the CheckBox of first item in it.
i.e. I want to disable the first item in the C

Answer 1

Disabling items isn't a great idea, the user will have no good feedback that click the check box won't have any effect. You cannot use custom drawing to make it obvious. Best thing to do is to simply omit the item.

You can however easily defeat the user with the ItemCheck event:

    private void checkedListBox1_ItemCheck(object sender, ItemCheckEventArgs e) {
        if (e.Index == 0) e.NewValue = e.CurrentValue;
    }