WPF Grid

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  12 years ago

  by elbowpipe

  Duncan MacInnes

  , United Kingdom

  Joined 13 years ago

  Hi,

  Iam working on WPF Datagrid with VS2008, code is in VB. I wish to provide facility  to user to select "Columns" of a Table using ListBox(if possible, by clicking on Checkboxes within the ListBox) and the Report will be generated for those selected "Columns" only. Selection to be made at run time !

  I have run the program , but it is giving 2 errors.
  i)Could not create an instance of type'StaticExtension'
  ii)Cannot find the type 'VisibilityToBoolConverter'
  I am sending the relevant XAML code as well as the VisibilityToBoolConverter.vb code

  
  <XAML>
  <CheckBox IsChecked="{Binding Visibility ,
                      Converter={x:Static local:VisibilityToBoolConverter.Default},
                                  Mode=TwoWay}"/>
      <TextBlock Text="{Binding Caption}"/>
  </XAML>

  
  <VisibilityToBoolConverter.vb>
  Imports System
  Imports System.Collections.Generic
  Imports System.Linq
  Imports System.Text
  Imports System.Windows.Data
  Imports System.Windows
  Imports System.Globalization

  Namespace NEW_WpfApplication_20_5_08
    Public Class VisibilityToBoolConverter
      Implements IValueConverter

      Public Shared ReadOnly [Default] As New VisibilityToBoolConverter()

      Public Function Convert(ByVal value As Object, ByVal targetType As Type, ByVal parameter As Object, ByVal culture As CultureInfo) As Object Implements IValueConverter.Convert
        If TypeOf value Is Visibility Then
          Return CType(value, Visibility) = Visibility.Visible
        Else
          Return Binding.DoNothing
        End If
      End Function

      Public Function ConvertBack(ByVal value As Object, ByVal targetType As Type, ByVal parameter As Object, ByVal culture As CultureInfo) As Object Implements IValueConverter.ConvertBack
        If TypeOf value Is Boolean Then
          Return If(CBool(value), Visibility.Visible, Visibility.Collapsed)
        Else
          Return Binding.DoNothing
        End If
      End Function
    End Class
  End Namespace
  </VisibilityToBoolConverter.vb>

  
  Could you please point out the error in my application ?

  Regards Arijit

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