ResultPropertyName Property (StatFunction)

In This Topic

Gets or sets the unique, case-sensitive property name from which the result of the function can be retrieved.

Syntax

Visual Basic
C#

'Declaration
 
Public Property ResultPropertyName As String

'Usage
 
Dim instance As StatFunction
Dim value As String
 
instance.ResultPropertyName = value
 
value = instance.ResultPropertyName

public string ResultPropertyName {get; set;}

Property Value

A string representing the unique, case-sensitive property name from which the result of the statistical function can be retrieved. Cannot be a null reference (Nothing in Visual Basic) or empty.

Example

All examples in this topic assume that the grid is bound to the OrderDetails table of the Northwind database, unless stated otherwise.

The following example demonstrates how to display the results of various statistical functions in and outside of a grid.The following example demonstrates how to change the statistical context of a TextBlock that displays the results of a statistical function when the current item is changed. The statistical context of the TextBlock will be changed in the grid's PropertyChanged event handler by using the GetParentGroupFromItem method to retrieve the current group and set it as the new statistical context. To simplify the code below, the DataContext of the StackPanel could have been modified rather than the DataContext of each TextBlock. The implementation of the PropertyChanged event handler is located below.The following code provides the implementation of the PropertyChanged event handler.The following code provides the implementation of the PropertyChanged event handler.The following example demonstrates how to create a custom data template that will be used in the footers of the first-level groups to display the results of various statistical functions.

XAML
XAML
Visual Basic
C#
XAML

<Grid xmlns:xcdg="http://schemas.xceed.com/wpf/xaml/datagrid">
  <Grid.Resources>
    <xcdg:DataGridCollectionViewSource x:Key="cvs_orderdetails"
                                       Source="{Binding Source={x:Static Application.Current},
                                                        Path=OrderDetails}">
     <xcdg:DataGridCollectionViewSource.StatFunctions>
       <xcdg:CountFunction ResultPropertyName="orderid_count"
                           SourcePropertyName="OrderID"/>
       <xcdg:SumFunction ResultPropertyName="unitprice_sum"
                         SourcePropertyName="UnitPrice"/>
       <xcdg:AverageFunction ResultPropertyName="unitprice_average"
                             SourcePropertyName="UnitPrice"/>
       <xcdg:SumFunction ResultPropertyName="quantity_sum" SourcePropertyName="Quantity"/>
     </xcdg:DataGridCollectionViewSource.StatFunctions>
     <xcdg:DataGridCollectionViewSource.GroupDescriptions>
       <xcdg:DataGridGroupDescription PropertyName="ProductID"/>      
 </xcdg:DataGridCollectionViewSource.GroupDescriptions>
    </xcdg:DataGridCollectionViewSource>
   <xcdg:StatResultConverter x:Key="valueConverter"/>
  </Grid.Resources>
  <DockPanel>
    <StackPanel Orientation="Horizontal" DockPanel.Dock="Top">
      <TextBlock Text="Total Orders: "/>
      <TextBlock Text="{Binding ElementName=OrderDetailsGrid,
                 Path=StatContext.orderid_count}"/>
    </StackPanel>
     <StackPanel Orientation="Horizontal" DockPanel.Dock="Top">
       <TextBlock Text="Average Unit Price: "/>
     <TextBlock Text="{Binding ElementName=OrderDetailsGrid,
                        Path=StatContext.unitprice_average,
                        Converter={StaticResource valueConverter},
                        ConverterParameter=f2}"/>
    </StackPanel>
    <xcdg:DataGridControl x:Name="OrderDetailsGrid"
                          ItemsSource="{Binding Source={StaticResource cvs_orderdetails}}"
                          DockPanel.Dock="Bottom">
      <xcdg:DataGridControl.DefaultGroupConfiguration>
        <xcdg:GroupConfiguration> 
        <xcdg:GroupConfiguration.Footers>
           <DataTemplate>
               <xcdg:StatRow>
               <xcdg:StatCell FieldName="UnitPrice"
                                   ResultPropertyName="unitprice_sum"/>
               <xcdg:StatCell FieldName="Quantity" ResultPropertyName="quantity_sum"/>
               <xcdg:StatCell FieldName="OrderID" ResultPropertyName="orderid_count"/>
               <xcdg:StatCell FieldName="UnitPrice"
                              ResultPropertyName="unitprice_average"
                              ResultConverterParameter="f2"/>
             </xcdg:StatRow>
           </DataTemplate>
         </xcdg:GroupConfiguration.Footers>
        </xcdg:GroupConfiguration>
      </xcdg:DataGridControl.DefaultGroupConfiguration>    
    </xcdg:DataGridControl>
  </DockPanel>
</Grid>

<Grid xmlns:xcdg="http://schemas.xceed.com/wpf/xaml/datagrid">
  <Grid.Resources>
    <xcdg:DataGridCollectionViewSource x:Key="cvs_orderdetails"
                                    Source="{Binding Source={x:Static Application.Current}, 
                                                     Path=OrderDetails}">

      <xcdg:DataGridCollectionViewSource.StatFunctions>
        <xcdg:CountFunction ResultPropertyName="orderid_count"
                            SourcePropertyName="OrderID"/>
        <xcdg:AverageFunction ResultPropertyName="unitprice_average"
                              SourcePropertyName="UnitPrice"/>              
      </xcdg:DataGridCollectionViewSource.StatFunctions>
      <xcdg:DataGridCollectionViewSource.GroupDescriptions>
        <xcdg:DataGridGroupDescription PropertyName="ProductID"/>
      </xcdg:DataGridCollectionViewSource.GroupDescriptions>
    </xcdg:DataGridCollectionViewSource>
    <xcdg:StatResultConverter x:Key="valueConverter"/>
  </Grid.Resources>
  <DockPanel>
    <StackPanel Orientation="Horizontal" DockPanel.Dock="Top">
      <TextBlock Text="Results for product "/>
      <TextBlock x:Name="CurrentGroupTitle" Text="{Binding Name}"/>
      <TextBlock Text=": "/>
      <TextBlock Text="     Total Orders-"/>
      <TextBlock x:Name="TotalOrders" Text="{Binding orderid_count}"/>
      <TextBlock Text="     Average Unit Price-"/>
      <TextBlock x:Name="AveragePrice"
                 Text="{Binding unitprice_average,
                        Converter={StaticResource valueConverter},
                        ConverterParameter=f2}"/>
    </StackPanel>
    <xcdg:DataGridControl x:Name="OrderDetailsGrid"
                          ItemsSource="{Binding Source={StaticResource cvs_orderdetails}}"
                          PropertyChanged="CurrentItemChanged"
                          DockPanel.Dock="Bottom"/>
  </DockPanel>
</Grid>

Private Sub CurrentItemChanged( ByVal sender As Object, _
                                ByVal e AsPropertyChangedEventArgs  )
  If e.PropertyName = "CurrentItem" Then

    If Me.OrderDetailsGrid.CurrentItem Is Nothing Then
      Return

    Dim group As CollectionViewGroup =
              Me.OrderDetailsGrid.GetParentGroupFromItem( Me.OrderDetailsGrid.CurrentItem )

    Me.CurrentGroupTitle.DataContext = group
    Me.TotalOrders.DataContext = group
    Me.AveragePrice.DataContext = group
  End If
End Sub

private void CurrentItemChanged( object sender, PropertyChangedEventArgs e )
{
  if( e.PropertyName == "CurrentItem" )
  {

    if( this.OrderDetailsGrid.CurrentItem == null )
      return;

    CollectionViewGroup group =
              this.OrderDetailsGrid.GetParentGroupFromItem( this.OrderDetailsGrid.CurrentItem );

    this.CurrentGroupTitle.DataContext = group;
    this.TotalOrders.DataContext = group;
    this.AveragePrice.DataContext = group;
  }
}

<Grid xmlns:xcdg="http://schemas.xceed.com/wpf/xaml/datagrid">
  <Grid.Resources>
    <xcdg:DataGridCollectionViewSource x:Key="cvs_orderdetails"
                                       Source="{Binding Source={x:Static Application.Current},
                                                        Path=OrderDetails}"> 
    <xcdg:DataGridCollectionViewSource.StatFunctions>
       <xcdg:CountFunction ResultPropertyName="orderid_count"
                           SourcePropertyName="OrderID"/>
       <xcdg:SumFunction ResultPropertyName="unitprice_sum"
                         SourcePropertyName="UnitPrice"/>
       <xcdg:AverageFunction ResultPropertyName="unitprice_average"
                             SourcePropertyName="UnitPrice"/>
       <xcdg:SumFunction ResultPropertyName="quantity_sum"
                         SourcePropertyName="Quantity"/>
     </xcdg:DataGridCollectionViewSource.StatFunctions>       
      <xcdg:DataGridCollectionViewSource.GroupDescriptions>
        <xcdg:DataGridGroupDescription PropertyName="ProductID"/>
      </xcdg:DataGridCollectionViewSource.GroupDescriptions>
    </xcdg:DataGridCollectionViewSource>
   <xcdg:StatResultConverter x:Key="valueConverter"/>
  </Grid.Resources>
  <xcdg:DataGridControl x:Name="OrderDetailsGrid"
                        ItemsSource="{Binding Source={StaticResource cvs_orderdetails}}">
    <xcdg:DataGridControl.DefaultGroupConfiguration>
      <xcdg:GroupConfiguration>
        <xcdg:GroupConfiguration.Footers>
          <xcdg:GroupHeaderFooterItemTemplate VisibleWhenCollapsed="True">
            <DataTemplate>
              <Border Background="#999999"
                      BorderBrush="LightBlue"
                      BorderThickness="3"
                      Margin="5" >
                <Grid>
                  <Grid.ColumnDefinitions>
                    <ColumnDefinition/>
                    <ColumnDefinition/>
                  </Grid.ColumnDefinitions>
                  <Grid.RowDefinitions>
                    <RowDefinition/>
                    <RowDefinition/>
                    <RowDefinition/>
                    <RowDefinition/>
                  </Grid.RowDefinitions>
                  <TextBlock Text="Total Orders: " Grid.Row="0" Grid.Column="0"/>
                   <TextBlock Text="{Binding RelativeSource={RelativeSource Self},
                                             Path=(xcdg:DataGridControl.StatContext).orderid_count}"
                              Grid.Row="0" Grid.Column="1"/>                    
                    <TextBlock Text="Total Quantity Sold: " Grid.Row="1" Grid.Column="0"/>
                   <TextBlock Text="{Binding RelativeSource={RelativeSource Self},
                                   Path=(xcdg:DataGridControl.StatContext).quantity_sum}"
                                   Grid.Row="1" Grid.Column="1"/>  
                    <TextBlock Text="Total Sales: " Grid.Row="2" Grid.Column="0"/>
                   <TextBlock Text="{Binding RelativeSource={RelativeSource Self},
                                             Path=(xcdg:DataGridControl.StatContext).unitprice_sum}"
                              Grid.Row="2" Grid.Column="1"/>  
                    <TextBlock Text="Average Unit Price: " Grid.Row="3" Grid.Column="0"/>
                   <TextBlock Text="{Binding RelativeSource={RelativeSource Self},
                                             Path=(xcdg:DataGridControl.StatContext).unitprice_average,
                                             Converter={StaticResource valueConverter},
                                             ConverterParameter=f2}"
                              Grid.Row="3" Grid.Column="1"/>         
                  </Grid>
                </Border> 
              </DataTemplate>  
            </xcdg:GroupHeaderFooterItemTemplate>
          </xcdg:GroupConfiguration.Footers>
        </xcdg:GroupConfiguration>
      </xcdg:DataGridControl.DefaultGroupConfiguration>
      <xcdg:DataGridControl.View>
        <xcdg:CardView AllowCardResize="True"/>
      </xcdg:DataGridControl.View>
    </xcdg:DataGridControl>
  </Grid>

Requirements

Target Platforms: Windows 11, Windows, 10, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

StatFunction Class
StatFunction Members

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Reference