it would be nice if it would be possible to have a Nullable ComboBox. Maybe enabled by a Property. If you set a DataSource it will automatically add a null option in the DropDown. As an additional property a NullValueText would be nice so we show different text like “”, “(none)” or “(empty)”.
The data binder position is in sync with the SelectedIndex unless it’s -1. We can’t add an item 0 and make it act as -1, it would create too may potential problems.
You can also add a tool button to the ComboBox to set it to “null”, SelectedIndex = -1. See screenshot attached. Most controls in Wisej have the Tools property.
The Watermark text is shown when nothing is selected when the combo is editable.
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