DataForm commit button is not enabled when data changed.
- by Grayson Mitchell
This is a weird problem. I am using a dataform, and when I edit the data the save button is enabled, but the cancel button is not.
After looking around a bit I have found that I have to implement the IEditableObject in order to cancel an edit. Great I did that (and it all works), but now the commit button (Save) is grayed out, lol. Anyone have any idea's why the commit button will not activate any more?
Xaml
<df:DataForm x:Name="_dataForm"
AutoEdit="False"
AutoCommit="False"
CommandButtonsVisibility="All">
<df:DataForm.EditTemplate >
<DataTemplate>
<StackPanel Name="rootPanel"
Orientation="Vertical"
df:DataField.IsFieldGroup="True">
<!-- No fields here. They will be added at run-time. -->
</StackPanel>
</DataTemplate>
</df:DataForm.EditTemplate>
</df:DataForm>
binding
DataContext = this;
_dataForm.ItemsSource = _rows;
...
TextBox textBox = new TextBox();
Binding binding = new Binding();
binding.Path = new PropertyPath("Data");
binding.Mode = BindingMode.TwoWay;
binding.Converter = new RowIndexConverter();
binding.ConverterParameter = col.Value.Label;
textBox.SetBinding(TextBox.TextProperty, binding);
dataField.Content = textBox;
// add DataField to layout container
rootPanel.Children.Add(dataField);
Data Class definition
public class Row : INotifyPropertyChanged , IEditableObject
{
public void BeginEdit()
{
foreach (var item in _data)
{
_cache.Add(item.Key, item.Value);
}
}
public void CancelEdit()
{
_data.Clear();
foreach (var item in _cache)
{
_data.Add(item.Key, item.Value);
}
_cache.Clear();
}
public void EndEdit()
{
_cache.Clear();
}
private Dictionary<string, object> _cache = new Dictionary<string, object>();
private Dictionary<string, object> _data = new Dictionary<string, object>();
public object this[string index]
{
get
{
return _data[index];
}
set
{
_data[index] = value;
OnPropertyChanged("Data");
}
}
public object Data
{
get { return this; }
set
{
PropertyValueChange setter = value as PropertyValueChange;
_data[setter.PropertyName] = setter.Value;
}
}
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged(string property)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(property));
}
}
}
