What is wrong with the Converter?

11-25-2008 1:09 AM |

I got a data grid where data is coming through the Web service.

I got <CellTemplate /> with the edit button and I want to set the visibility on the basis of if I can update or not. The flag is coming from the web service, so I got like this:

List<Employee> employees = e.Result;

employeesDataGrid.ItemsSource = ...;

Now in the button I wrote like this:

<Button x:Name="EditClient" Margin="2,0" DataContext="{Binding ClientID}" Click="EditClient_Click"  Style="{StaticResource GreyBTN}" Content="Edit"  Visibility="{Binding CanUpdate, Converter={StaticResource ToVisibility}}" />

Here you can see that I've got ao binding to the visibility property and got a converter that converts the true false value to System.Windows.Visiblity.

I got a conversion code like this:

public class BooleanToVisibilityConverter : IValueConverter
    {
        #region IValueConverter Members

        /// <summary>
        ///  Modifies the source data before passing it to the 
        ///  target for display in the
        //    UI.
        /// </summary>
        /// <param name="value">The source data being passed to the target.</param>
        /// <param name="targetType">The System.Type of data expected by the target dependency property.</param>
        /// <param name="parameter">An optional parameter to be used in the converter logic.</param>
        /// <param name="culture">The culture of the conversion.</param>
        /// <returns>The value to be passed to the target dependency property.</returns>
        /// <remarks>NOTE: AT PRESENT WE ARE CONVERTING VALUE INTO OF TYPE DATE ONLY!!
        /// format: dd/MM/yyyy</remarks>
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value == null)
            {
                return null;
            }

            bool? v = (bool)value;

            if (v == true)
            {
                return (object)System.Windows.Visibility.Visible;
            }
            else
            {
                return (object)System.Windows.Visibility.Collapsed;
            }
        }

What is the solution of this? Anyone? please!

If I do a debugging, and make a debug cursor to this class, it does not get called at all.

PLEASE HELP :(

Re: What is wrong with the Converter?

11-25-2008 1:51 AM |

if its not called and not error, it can be a problem in the staticresource declaration of the converter. It's case sensisitve, Can you post that part of xaml?

Re: What is wrong with the Converter?

11-25-2008 8:09 AM |

The BooleanToVisibilityConverter class is in the common sl dll so i've declated like this in app.xaml

 <common:BooleanToVisibilityConverter   x:key="ToVisibility"/>

common is the namespace pointing to the dll.

btw I've got another field for the date and there also I am using another converter which is working. The only difference i can see here is that one is binding for content property where as this one for visibility property, will it make a difference i dont know :(

Re: What is wrong with the Converter?

11-27-2008 6:22 PM |