PickerColumn.ValueMember Property

Gets or sets the name of a data field that contains values actually assigned to cells.

Namespace: DevExpress.XamarinForms.DataGrid

Assembly: DevExpress.XamarinForms.Grid.dll

NuGet Package: DevExpress.XamarinForms.Grid

Declaration

[XtraSerializableProperty]
public string ValueMember { get; set; }

Property Value

Type	Description
String	The data source field name.

Remarks

The ItemsSource collection contains values that users can select in the drop-down list. If this collection contains business objects, use the following properties to describe the business object’s data fields:

• DisplayMember — specifies the data field that contains values that are displayed in the drop-down list.
• ValueMember — specifies the data field that contains values that are actually assigned to cells.

Example

In the example below, the ComboBoxColumn is bound to a data field that contains integer values. To display strings instead of integers in the drop-down list, the example uses a business object that combines strings with integers. The DisplayMember and ValueMember properties specify data fields that contain displayed strings and actual integer values.

XAML

<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:dxg="http://schemas.devexpress.com/xamarin/2014/forms/datagrid">
    <dxg:DataGridView x:Name="dataGridView"
                    ItemsSource="{Binding Path=Employees}"
                    EditorShowMode="Tap">
        <dxg:DataGridView.Columns>
            <!-- Other columns here. -->
            <dxg:ComboBoxColumn FieldName="Job" 
                                ItemsSource="{Binding Jobs}"
                                DisplayMember="Title"
                                ValueMember="Id"
                                IsEditorFilterEnabled="True">
            </dxg:ComboBoxColumn>
            <!-- Other columns here. -->
        </dxg:DataGridView.Columns>
    </dxg:DataGridView>
</ContentPage>

C#

using System.Collections.Generic;
using System.ComponentModel;
using Xamarin.Forms;

public partial class EditingView : ContentPage {
    public EditingView() {
        InitializeComponent();
        BindingContext = new Repository(300);
    }
}

public class Repository {
    public ObservableCollection<Employee> Employees { get; private set; }
    public ObservableCollection<Job> Jobs { get; private set; }

    public Repository(int rowsCount) {
        Employees = new ObservableCollection<Employees>();
        Jobs = new ObservableCollection<Job>();
        for (int i = 0; i < rowsCount; i++) {
            Employees.Add(new Employee());
            Jobs.Add(new Job());
        }
    }
}

public class Employee {
    public string FullName { get; set; }
    public int Job { get; set; }
}

public class Job {
    public int Id { get; set; }
    public string Title { get; set; }
}