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Filter problem with property binding

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Silvio del Balzo
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Silvio del Balzo asked on 25 Sep 2009, 02:14 PM
first of all I'm sorry for my English.
I'm a new user, I'm trying to binding a fieldFilterDescription property  (value) to Textbox Property (text)
I used an example found in this forum "SilverlightGridCustomFilterRow"
In SilverlightGridCustomFilterRow the binding work well, but in my vb code WPF
the binding don't work.
When I change the textboxproperty don't change the fieldFilterDescription property
What's Wrong?

Dim ffd As FieldFilterDescription = Nothing 
For Each cell As GridViewHeaderCell In cells 
    Dim column As GridViewDataColumn = DirectCast(cell.Column, GridViewDataColumn) 
    Dim descriptions As IEnumerable(Of FieldFilterDescription) = radGridView.FilterDescriptors.OfType(Of FieldFilterDescription)() 
    ffd = (From fd In descriptions Where fd.FieldName = column.UniqueName Select fd).FirstOrDefault() 
    Dim element As FrameworkElement = Nothing 
    element = New TextBox() 
    element.Height = 24 
    element.Margin = New Thickness(3, 3, 3, 5) 
    If ffd IsNot Nothing Then 
       ffd.Filter1.[Operator] = Telerik.Windows.Data.FilterOperator.Contains 
       BindText(element, "Value", ffd.Filter1) 
    End If 
Private Sub BindText(ByVal ptextBox As TextBox, ByVal pproperty As String, ByVal source As Object) 
            Dim textProp As DependencyProperty = TextBox.TextProperty 
            If Not BindingOperations.IsDataBound(ptextBox, textProp) Then 
                Dim b As Binding = New Binding(pproperty) 
                b.Source = source 
                b.Mode = BindingMode.TwoWay 
                b.Path = New PropertyPath(pproperty) 
                ptextBox.SetBinding(TextBox.TextProperty, b) 
            End If 
End Sub 

Best regards

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Stefan Dobrev
Telerik team
answered on 30 Sep 2009, 12:11 PM
Hello Silvio,

My suggestion is to use FilterDescriptor instead of FieldFilterDescription. FieldFilterDescription is used for our own internal purpose to create filtering drop down.

You can create a FilterDescriptor and bind its value to the TextBox.Text  property. Then you will need to add this FilterDescriptor to the FilterDescriptors property of RadGridView.

Stefan Dobrev
the Telerik team

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Asked by
Silvio del Balzo
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Answers by
Stefan Dobrev
Telerik team
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