Datagrid Row Background Color scrolling bug

Datagrid Row Background Color scrolling bug

Posted by: fatica on 19 September 2017, 10:40 am EST

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  fatica

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  Posted 19 September 2017, 10:40 am EST

  Please see here for a video demonstration of an example of what appears to be a rendering/painting bug on the background color of these rows.

  http://screencast.com/t/PIB12yz4ux7

  We’re using simple triggers to set the backgroundcolor property of the row based on a boolean value in the Row.Dataitem object. Can you confirm that this is a bug and if so what we need to do to workaround? Thanks!

  [xml] <c1:C1DataGrid
  
  BorderThickness=“1” ColumnHeaderStyle=“{StaticResource ResourceKey=HeaderStyle}” GroupRowStyle=“{StaticResource ResourceKey=DataGridGroupRowStyle}” Name=“RateHistoryDetailsDataGrid” AutoGenerateColumns=“False” IsReadOnly=“True” CanUserAddRows=“False” CanUserEditRows=“False”
  
  ItemsSource=“{Binding HistoryDetailsListCollection}” SelectionMode=“SingleRow” >
  
  c1:C1DataGrid.CellStyle
  
  
  
  <Style.Triggers>
  
  
  
  
  
  
  
  
  
  
  
  
  
  </Style.Triggers>
  
  
  
  </c1:C1DataGrid.CellStyle>

  …
  
  [/xml]

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  c1_deepankar

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  Posted 19 September 2017, 10:40 am EST

  Hi,

  I could replicate the behavior. However, this seems to be working fine with the latest
  
  WPF build. Download the latest build and verify if this fixes the issue or not.

  http://prerelease.componentone.com/dotnet40/c1wpflibrary/2012-t2/C1WPFBasicLibrary.4_4.0.20122.257.zip

  Regards,

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  fatica

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  Posted 19 September 2017, 10:40 am EST

  I’m not sure I can upgrade the component. We have many other dependencies. I’ll check with management.

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  fatica

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  Posted 19 September 2017, 10:40 am EST

  Is there a workaround?

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  fatica

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  Posted 19 September 2017, 10:40 am EST

  We aren’t able to upgrade at the moment: The C1 new release breaks some of our stuff and it will require a coordinated effort from all teams when/before it can be done.

  Is there something else we can use to effect row highlighting? Is this bug with all highlighting or something specific to how we’re using it? Is there another approach?

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  c1_deepankar

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  Posted 19 September 2017, 10:40 am EST

  Well another option is to use LoadedCellPresenter events to apply the color settings instead
  
  of using Triggers. Here is the suggested code for your reference.

  [vb]
  
  Private Sub c1DataGrid1_LoadedCellPresenter(sender As Object, e As C1.WPF.DataGrid.DataGridCellEventArgs) Handles c1DataGrid1.LoadedCellPresenter

  If CType(e.Cell.Row.DataItem, MyDataClass).Salary = 19000 Then
  
  e.Cell.Presenter.Background = New SolidColorBrush(Colors.Red)
  
  ElseIf CType(e.Cell.Row.DataItem, MyDataClass).Salary = 23000 Then
  
  e.Cell.Presenter.Background = New SolidColorBrush(Colors.Yellow)
  
  End If

  End Sub
  
  Private Sub c1DataGrid1_UnloadedCellPresenter(sender As Object, e As C1.WPF.DataGrid.DataGridCellEventArgs) Handles c1DataGrid1.UnloadedCellPresenter
  
  e.Cell.Presenter.Background = Nothing
  
  End Sub
  
  [/vb]

  Please do implement the UnloadedCellPresenter event as well. For any property set in the
  
  LoadedCellPresenter, set that to nothing in UnloadedCellPresenter. Hope this helps.

  Regards,

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  jagdeeshk

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  Posted 5 December 2019, 1:41 am EST

  Try like this it may be work for you…

  Style s = new Style(typeof(C1.WPF.DataGrid.DataGridCellPresenter));
  s.Setters.Add(new Setter(C1.WPF.DataGrid.DataGridCellPresenter.BackgroundProperty, Brushes.Yellow));
  s.Setters.Add(new Setter(C1.WPF.DataGrid.DataGridCellPresenter.ForegroundProperty, Brushes.White));
  
  dataGridView1.Rows[rowIndexValue].CellStyle = s;