How to add contents of 2 fields to get summary in XAML code?

Question

I would like to know how to get the column summary in XAML code. I'm able to get the row summaries using the code mentioned in attachment or image. But I do not know how to add contents from "a1" ,"b1" and "c1" to get the "Summary" in XAML code only without using code-behind . I'm using Infragistics xamDataGrid

please refer this

Answer 1

You need MultiBinding and MultiValueConverter. Below example calculates sum of Num1 and Num2 properties and shows their Sum.

            <DataGridTextColumn Header="Sum">
                <DataGridTextColumn.Binding>
                    <MultiBinding Converter="{StaticResource SumCnvKey}">
                        <Binding Path="Num1"/>
                        <Binding Path="Num2"/>
                    </MultiBinding>
                </DataGridTextColumn.Binding>
            </DataGridTextColumn>

Converter:

public class SumConverter : IMultiValueConverter
{
    public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        if (values[0] != DependencyProperty.UnsetValue && values[1] != DependencyProperty.UnsetValue && values[2] != DependencyProperty.UnsetValue)

            return ((int)values[0] + (int)values[1]).ToString();

        else
            return DependencyProperty.UnsetValue;
    }

    public object[] ConvertBack(object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}