How to add ItemSource to Multibinding?

[Ishanin Vladimir Alexandrovich]

I need to change Background of cell with MultiBinding Converter. How to add ItemSource to Binding?
My code : 

Style TargetType="Syncfusion:GridCell">

                    <Setter Property="Background">

                        <Setter.Value>

                            <MultiBinding Converter="{StaticResource myValidConverter}">

                                <Binding Path="ItemSource" RelativeSource="{RelativeSource FindAncestor, AncestorType={x:Type Syncfusion:SfDataGrid}}"/>

                                <Binding RelativeSource="{RelativeSource Self}"/>

                                <Binding/>

                            </MultiBinding>

                        </Setter.Value>

                    </Setter>

                </Style>

But in Converter values[0] =  DependencyProperty.UnsetValue

[Vijayarasan Sivanandham]

Hi Ishanin Vladimir Alexandrovich,

Your requirement to pass the ItemSource as a parameter in the MultiBinding converter can be achieved by passing the ItemSource property of SfDataGrid. Please refer to the below code snippet,

XAML Code Snippet:

<Window.Resources>

        <local:ColorConverter x:Key="converter"/>

        <Style TargetType="syncfusion:GridCell"  >

            <Setter Property="Background" >

                <Setter.Value>

                    <MultiBinding Converter="{StaticResource converter}" >

                        <Binding Path="ItemsSource"  ElementName="sfDataGrid"  />

                        <Binding ElementName="sfDataGrid"  />

                        <Binding RelativeSource="{RelativeSource Self}" />

                    </MultiBinding>

                </Setter.Value>

            </Setter>

        </Style>

</Window.Resources>

  

<Grid>      

        <syncfusion:SfDataGrid x:Name="sfDataGrid"                            

                               AllowEditing="True"                              

                               ItemsSource="{Binding Orders}"

                               AutoGenerateColumns="True">         

        </syncfusion:SfDataGrid>      

 </Grid>

C# Code Snippet:

public class ColorConverter : IMultiValueConverter

{

        public object Convert(object[] value, Type targetType, object parameter, CultureInfo culture)

        {           

            //here get the ItemsSource

            var getItemsSource = value[0];

 

            //here get the SfDataGrid

            var dataGrid = value[1] as SfDataGrid;

            //another way to get the ItemsSource

            var ItemsSource = dataGrid.ItemsSource;

 

            //here get the GridCell

            var gridcell = value[2] as GridCell;          

          

            //here customize based on your scenario

 

            //Check the condition  based on cell value for different column

 

            return new SolidColorBrush(Colors.LightBlue);

           

        }

 

        object[] IMultiValueConverter.ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)

        {

            throw new NotImplementedException();

        }

}

UG Link: https://help.syncfusion.com/wpf/datagrid/conditional-styling?cs-save-lang=1&cs-lang=xaml#conditional-styling-of-cells-using-converter

https://help.syncfusion.com/wpf/datagrid/conditional-styling?cs-save-lang=1&cs-lang=xaml#cell-style

https://help.syncfusion.com/wpf/datagrid/styles-and-templates

KB Link: https://www.syncfusion.com/kb/4186/how-to-change-the-gridcell-style-at-runtime

Please find the sample in the attachment and let us know if you have any concerns in this.

Regards,

Vijayarasan S

Attachment: SfDataGridDemo_c0dc9504.zip