DataGridCellStyle: Set Background of DataGridCell based on value in a Different DataGrid / DataTable

Question

Hi everyone
I am trying to set the background of a cell in a datagrid based on a value in a different datagrid. Is it possible to specify this in the XAML through binding? I'm using the MVVM pattern and would like to minimise code in the code behind. Please note that
the datagrids are the same dimension, but the dimension is unknown until runtime.
I've copied an image of the two datagrids. Essentially, the second datagrid will contain values of 0 or 1. I would then like to color the cells in the first datagrid a different color based on these values. 
CODE:
<DataGrid Style="{StaticResource Style1}" ItemsSource="{Binding Table1, StringFormat=n}" AutoGenerateColumns="True" >
<DataGrid.InputBindings>
<MouseBinding MouseAction="LeftDoubleClick" Command="{Binding CommandWithParameter}" CommandParameter="{Binding .}"/>
</DataGrid.InputBindings>
<DataGrid.CellStyle>
<Style TargetType="DataGridCell">
<Setter Property="Background" Value="{Binding Table2, Converter={StaticResource WeightConverter} }"/>
</Style>
</DataGrid.CellStyle>
</DataGrid>
Thanks!

Answer 1

You could use a DataTrigger that binds to a column of a row of the other DataGrid like this:
<DataGrid x:Name="datagrid"></DataGrid>
<DataGrid x:Name="datagrid2">
<DataGrid.CellStyle>
<Style TargetType="DataGridCell">
<Style.Triggers>
<DataTrigger Binding="{Binding Path=Items[0].num, ElementName=dataGrid}" Value="abc">
<Setter Property="Foreground" Value="Red"/>
</DataTrigger>
</Style.Triggers>
</Style>
</DataGrid.CellStyle>
</DataGrid>
DataTable dt = new DataTable();
dt.Columns.Add(new DataColumn("num") { DataType = typeof(string) });
dt.Rows.Add("abc");
datagrid.ItemsSource = dt.DefaultView;
datagrid2.ItemsSource = new List<string> {"a", "b", "c" };
Hope that helps.
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