Getting unexpected behavior when examining the IsChecked property of a Checkbox

Question

We have 6 CheckBoxes on a user control. We want to be able to determine, whether or not each of the 6 boxes are checked. We tried doing this in this event in the code behind:

private const short Black = 1;
private const short White = 32;
private const short Asian = 2;
private const short Islander = 8;
private const short AmInd = 4;
private const short Alask = 16;

private void RaceCheckboxes_Checked(object sender, System.Windows.RoutedEventArgs e)
{
    short race = 0;

    if (cbAlask.IsChecked == true)
    {
        race += Alask;
    }
    if (cbAmInd.IsChecked == true)
    {
        race += AmInd;
    }
    if (cbIslander.IsChecked == true)
    {
        race += Islander;
    }
    if (cbAsian.IsChecked == true)
    {
        race += Asian;
    }
    if (cbWht.IsChecked == true)
    {
        race += White;
    }
    if (cbBlack.IsChecked == true)
    {
        race += Black;
    }

    atr.Race = race;
}

The thing I don't understand is this. When the user clicks on the checkbox named cbWht, it entered this event and all 6 of the checkboxes IsChecked property were true. Why is that? Only 1 of them was checked.

I discovered that the problem was the XAML. It was being data bound to the same field in the database. Change one, and it affected all six. Silly mistake. — Rod, Jun 05 '13 at 00:35

score 0 · Answer 1 · edited Jun 04 '13 at 03:15

0

Try using the Clicked event instead of the Checked event. I.e. RaceCheckboxes_Clicked.

edited Jun 04 '13 at 03:15

Dave Clemmer

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answered Jun 03 '13 at 22:38

Chris Bennet

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What's the difference between the Clicked and the Checked events, as far as the Checkbox in WPF goes? – Rod Jun 05 '13 at 00:36

Getting unexpected behavior when examining the IsChecked property of a Checkbox

1 Answers1