Strange GridViewDataColumn not filtrable

[Dario Concilio]

Hello,

I created a GridView that shows a List<object>, this "object" could be several types, all these types inherit from a same type. This base type has 3 properties:Key, Value and Icon.

Now I show my XAML

<telerik:RadGridView.Columns>
  <telerik:GridViewImageColumn Header="" DataMemberBinding="{Binding Icon,Converter={StaticResource IconaParametroConverter}}"     IsFilterable="False"/>
  <telerik:GridViewDataColumn Header="Parametro" DataMemberBinding="{Binding Caption}" Width="Auto"/>
  <telerik:GridViewDataColumn Header="Valore" DataMemberBinding="{Binding Value,Converter={StaticResource DynamicsParameterConverter}}" Width="*" CellStyle="{StaticResource ValueBoldStyle}" />
</telerik:RadGridView.Columns>

I attached what it shows at runtime.

The ValueColumn has not the filter control.

The only things is that DataMemberBinding has connected with a Converter because Value property should be several type, but this converter return ever string.

Is it for this reason that not appear a filter control?

This is a converter code (Column of value is not editable)

public class DynamicsParameterConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter,
      System.Globalization.CultureInfo culture)
    {
        if (value == null)
            return "";

        if (value.GetType() == typeof(DateTime))
        {
            var date = (DateTime) value;
            return date.ToShortDateString();
        }
        else if (value.GetType() == typeof(int))
        {
            var number = (int) value;
            return number.ToString();
        }
        else if (value.GetType() == typeof(bool))
        {
            var siNo = (bool) value;
            return siNo ? "Sì" : "No";
        }
        else if (value.GetType() == typeof(double))
        {
            var valore = (double) value;
            return string.Format("{0:N2}", valore);
        }
        else if (value.GetType() ==typeof(CausaleIVA))
        {
            var valore = (CausaleIVA) value;
            return string.Format("{0} ({1})", valore.Codice, valore.Descrizione);
        }
        else
            return value.ToString();
    }
    //....
}

 

 

[Dario Concilio]

ERRATA CORRIDGE:

The property Value is not in a base class.

 

[Yoan]

Hi,

I would suggest you to check the Why doesn’t my column show the filtering funnel icon? help article for a reference. Please keep in mind that our filtering mechanism is working with the underlying data, so you will not be able to filter the converted value.

Regards,
Yoan
Telerik