Check all checkboxes in checkboxlist with one click using c#

Question

I want to have a button that once clicked, it will select all checkboxes in my checklistbox. I\'ve search the possible answers but I always see examples for asp.net and javascri

Answer 1

After arriving at this question multiple times, I have decided I will solve it for myself once and for all, with an extension method.

public static class Extensions
{
    public static void CheckAll(this CheckedListBox checkedListBox, bool check)
    {
        for (int i = 0; i < checkedListBox.Items.Count; i++)
            checkedListBox.SetItemChecked(i, check);
    }
}

MyCheckedListBox.CheckAll(true);