How can i set Alternate Row color from Code behind...?

 

the user will select the color which he wants from a color picker.

Please refer to the following topic in the documentation: http://doc.xceedsoft.com/products/XceedWpfDataGrid/Alternating%20data%20row%20styles.html

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Senior Technical Writer
- Xceed Software

In three words I can sum up everything I've learned about life: it goes on.

That shows how to do it in XAML. I need to do it in Code Behind...

This is how i have tried.... but i dont know how to get  DataGridVirtualizingPanel.ItemIndexProperty..

 

                    IndexToOddConverter rowIndexConverter = new IndexToOddConverter();

                    Style style = new Style(typeof(Xceed.Wpf.DataGrid.DataRow));
                    DataTrigger styleDataTrigger = new DataTrigger();

                    Binding binding = new Binding();
                    binding.RelativeSource = new RelativeSource(RelativeSourceMode.Self);
                    object obj = GetValue(DataGridVirtualizingPanel.ItemIndexProperty);
                    binding.Path = new PropertyPath(obj);
                    binding.Converter = rowIndexConverter;
                    styleDataTrigger.Value = true;

                    styleDataTrigger.Binding = binding;
                    styleDataTrigger.Value = dgGrid.CurrentColumn.FieldName;

                    SolidColorBrush brush = new SolidColorBrush(cpd.SelectedColor);
                    brush.Opacity = cpd.Opacity;
                    Setter setter = new Setter(Xceed.Wpf.DataGrid.DataRow.BackgroundProperty, brush);
                    style.Setters.Add(setter);
                    List<string> lstProperties = new List<string>();
                    lstProperties.Add("Background");

                    this.dgGrid.Resources[typeof(Xceed.Wpf.DataGrid.DataRow)] = style;

The DataGridVirtualizingPanel.ItemIndex property is an attached property and can be accessed as such. For more information on attached properties, please refer to the MSDN documentation: http://msdn.microsoft.com/en-us/library/ms749011.aspx

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Senior Technical Writer
- Xceed Software

In three words I can sum up everything I've learned about life: it goes on.

hi i writhe the foloowing cocde for changing row color based on my orderis field value but datatrigger is not working plz help

 

Style style = new Style(typeof(Xceed.Wpf.DataGrid.DataRow ));

DataTrigger styleDataTrigger = new DataTrigger();

System.Windows.Data.Binding binding = new System.Windows.Data.Binding();

binding.Path = new PropertyPath("OrderID");

styleDataTrigger.Binding = binding;

styleDataTrigger.Value = "10249";

style.Triggers.Add(styleDataTrigger);

 

 

Setter setter = new Setter(Xceed.Wpf.DataGrid.DataRow.BackgroundProperty, Brushes.Yellow );

style.Setters.Add(setter);

this.dataGridControl.Resources[typeof(Xceed.Wpf.DataGrid.DataRow)] = style;

What is not working? Do you have any errors in the output window?

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Senior Technical Writer
- Xceed Software

In three words I can sum up everything I've learned about life: it goes on.

Hi Pankaj,

 I replied to your question in your other thread here : http://xceed.com/CS/forums/thread/19595.aspx

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Diane Lafontaine
Technical Support / Technical Support Team Lead
Xceed Software Inc.

DataGridVirtualizingPanel.GetItemIndex(DataGridVirtualizingPanel.ItemIndexProperty) I am trying this but it is giving as it is asking for DependencyObject not DependencyProperty.

anyone????

You need to pass the container (Xceed.Wpf.DataGrid.DataRow) to the GetItemIndex and not its own dependency property. You can use the grid's GetContainerFromItem method to get the container from a data item.

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Senior Technical Writer
- Xceed Software

In three words I can sum up everything I've learned about life: it goes on.

This is the code i am using....

 

 Style style = new Style(typeof(Xceed.Wpf.DataGrid.DataRow));
                DataTrigger styleDataTrigger = new DataTrigger();

                Binding binding = new Binding();               
                //binding.Path = new PropertyPath(DataGridVirtualizingPanel.ItemIndexProperty);
                object obj = DataGridVirtualizingPanel.GetItemIndex(dgGrid.GetContainerFromItem(dgGrid.SelectedItem as Xceed.Wpf.DataGrid.DataRow));
                binding.Path = new PropertyPath(obj);
                binding.Converter = new IndexToOddConverter();
                binding.RelativeSource = RelativeSource.Self;               

                styleDataTrigger.Binding = binding;
                styleDataTrigger.Value = true;
               
                BrushConverter bConv = new BrushConverter();
                SolidColorBrush brush = (SolidColorBrush)bConv.ConvertFromString(color); //new SolidColorBrush();
                brush.Opacity = ToolWindow.CDouble(opacity);
                Setter setter = new Setter(Xceed.Wpf.DataGrid.DataRow.BackgroundProperty, brush);
                style.Setters.Add(setter);
                List<string> lstProperties = new List<string>();
                lstProperties.Add("Background");
               
                style.Triggers.Add(styleDataTrigger);
                this.dgGrid.Resources[typeof(Xceed.Wpf.DataGrid.DataRow)] = style;

 if i m using binding.Path = new PropertyPath(DataGridVirtualizingPanel.ItemIndexProperty);

It colors entire grid not the alternate row....

Are you certain the "obj" is not null? You are casting the SelectedItem as an Xceed.Wpf.DataGrid.DataRow when in fact it represents the underlying data item. The result of the GetContainerFromItem should be cast as a DataRow.

Is there a reason why you are doing this in code rather than the suggested XAML?

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Senior Technical Writer
- Xceed Software

In three words I can sum up everything I've learned about life: it goes on.

I am building a wrapper for the Xceed grid. I have given a tool bar for the grid. The user will have various options one of them is to change alternate row color. On clicking the alternate row color option, The user will get a color picker. He can choose the color and that color will be applied to the grid.

 This is what i am trying to do. But in the solution suggested by you, i have to use GetContainerFromItem but there will be not a single row selected in my case. thats why i m confused what to do and how to get ItemIndex property.

Kindly reply. I am stuck and i need this functionality to be finished asap....

What you could try is bind the Color property of the SolidColorBrush you are using as the alternate row color to a dependency property defined on the main window:

 <Style TargetType="{x:Type xcdg:DataRow}">

  <Style.Triggers>

      <DataTrigger Binding="{Binding RelativeSource={RelativeSource Self}, 

                         Path=(xcdg:DataGridVirtualizingPanel.ItemIndex), 

                         Converter={StaticResource rowIndexConverter}}"

                   Value="True">

          <Setter Property="Background">

              <Setter.Value>

                  <SolidColorBrush Color="{Binding RelativeSource={RelativeSource AncestorType={x:Type local:Window1}}, Path=Color}"

                                   Opacity="0.1" />

              </Setter.Value>

          </Setter>

      </DataTrigger>

  </Style.Triggers>

</Style>

 

Then, via the menu or button, change the value of the dependency property, which should automatically change the alternate row color.

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Senior Technical Writer
- Xceed Software

In three words I can sum up everything I've learned about life: it goes on.