Question

I have a problem with databinding in a winforms-application.
In the following code i have a databinding to the enabled-property of a textbox. The enabled-state depends on the value of a checkbox.

tbAmount.DataBindings.Add("Enabled", checkBox, "Checked", 
                          false, DataSourceUpdateMode.OnPropertyChanged);

in this code the textbox is enabled if the checkbox is checked. but i need it inverted. i want the textbox to be enabled if the checkbox is unchecked. How can i achieve this?

Answer 1

This should do it.

    Binding bind = new Binding("Enabled", checkBox, "Checked");

    bind.Format += 
        (sender, e) => 
            e.Value = !((bool)e.Value); // invert the checked value

    textBox.DataBindings.Add(bind);