PropertyGroupDescriptor

The PropertyGroupDescriptor is used to group the data in a DataGrid by property from the class that defines your objects.

To use the PropertyGroupDescriptor you have to set its property PropertyName.

• PropertyName (string): Gets or sets the name of the property that is used to retrieve the key to group by.

You can easily sort the groups in ascending or descending order using the SortOrder property.

Example

Let’s walk through an example of how to group data by property.

You can expand/collapse groups by a click/tap on the group header.

First, define a DataGrid instance in XAML with a PropertyGroupDescriptor which points to a property from our model through its PropertyName property:

<grid:RadDataGrid Width="600" Height="460" x:Name="grid">
    <grid:RadDataGrid.GroupDescriptors>
        <grid:PropertyGroupDescriptor PropertyName="Country" />
        </grid:RadDataGrid.GroupDescriptors>
</grid:RadDataGrid>

Next, create sample data and add it to the DataContext of our DataGrid:

List<Data> data = new List<Data>
{
    new Data { Country = "Brazil", City = "Caxias do Sul"},
    new Data { Country = "Ghana", City = "Wa"},
    new Data { Country = "Brazil", City = "Fortaleza"},
    new Data { Country = "Italy", City = "Florence" },
    new Data { Country = "France", City = "Bordeaux" }, 
    new Data { Country = "Bulgaria", City = "Vratsa"},
    new Data { Country = "Spain", City = "Las Palmas"},
    new Data { Country = "France", City = "Le Mans" },
    new Data { Country = "Brazil", City = "Santos"},
    new Data { Country = "Ghana", City = "Ho"},
    new Data { Country = "Spain", City = "Malaga"},
    new Data { Country = "France", City = "Marseille" },
    new Data { Country = "Bulgaria", City = "Koynare" },
    new Data { Country = "Spain", City = "Valencia"},
    new Data { Country = "Ghana", City = "Kade" },
    new Data { Country = "Brazil", City = "Porto Alegre" }, 
    new Data { Country = "Bulgaria", City = "Byala Slatina"},
    new Data { Country = "Italy", City = "Naples" },
    new Data { Country = "Brazil", City = "Joinville" }, 
};

this.grid.ItemsSource = data;

Data is a custom class which defines our objects:

public class Data
{
    public string City { get; set; }
    public string Country { get; set; }
}