Data Binding in WPF Multi Column Dropdown (SfMultiColumnDropDown)

You can populate the drop down list for SfMultiColumnDropDownControl by setting ItemsSource property.
DisplayMember denotes the path to a value on the data object for visual presentation of the Textbox and ValueMember denotes the path to a value on the data object to get the SelectedValue.

<Grid>
    <Grid.RowDefinitions>
        <RowDefinition Height="400" />
        <RowDefinition Height="*" />
    </Grid.RowDefinitions>
<syncfusion:SfMultiColumnDropDownControl x:Name=”sfMultiColumn”
                                         Width=”175”
                                         Height=”30”
                                         Grid.Row="0"
                                         SelectedIndex=”0”
                                         DisplayMember=”Title”
                                         ValueMember=”OrderID”
                                         ItemsSource=”{Binding Orders}” />
<StackPanel Grid.Row="1" Margin="100,0,0,0">
    <TextBlock FontSize="16" Text="SelectedItem (Display Member) " />
    <TextBlock FontSize="22"
               FontWeight="Bold"
               Text="{Binding ElementName= ”sfMultiColumn”,
                              Mode=TwoWay,
                              Path=SelectedItem.Title}" />
    <TextBlock FontSize="16" Text="SelectedValue (Value Member) " />
    <TextBlock FontSize="22"
               FontWeight="Bold"
               Text="{Binding ElementName= ”sfMultiColumn”,
                              Mode=TwoWay,
                              Path=SelectedValue}" />
</StackPanel>
</Grid>

Here, DisplayMember is Title hence the Title property in underlying data object is displayed in the textbox and the ValueMember is OrderID hence the OrderID property in underlying data object is considered as the SelectedValue.

Binding the data with SfMultiColumnDropDownControl Wpf

Binding with complex and indexer properties

SfMultiColumnDropDownControl provides support to display complex and indexer properties in its columns and also you can set complex and indexer properties as path to DisplayMember and ValueMember properties.

Binding with complex properties

<syncfusion:SfMultiColumnDropDownControl x:Name=”sfMultiColumn”
                                         Width=”175”
                                         Height=”30”
                                         SelectedIndex=”0”
                                         AutoGenerateColumns=”false”
                                         DisplayMember=”ProductDetails.ProductID”
                                         ValueMember=”ProductDetails.ProductID”
                                         ItemsSource=”{Binding Orders}”>
    <syncfusion:SfMultiColumnDropDownControl.Columns>
        <syncfusion:GridTextColumn MappingName=”OrderID” />
        <syncfusion:GridTextColumn MappingName=”ProductDetails.ProductID” />
        <syncfusion:GridTextColumn MappingName=”CustomerID” />
        <syncfusion:GridTextColumn MappingName=”Country” />
    </syncfusion:SfMultiColumnDropDownControl.Columns>
</syncfusion:SfMultiColumnDropDownControl>

Binding the complex properties with SfMultiColumnDropDownControl wpf

Binding with indexer properties

<syncfusion:SfMultiColumnDropDownControl x:Name=”sfMultiColumn”
                                         Width=”175”
                                         Height=”30”
                                         SelectedIndex=”0”
                                         AutoGenerateColumns=”false”
                                         DisplayMember=”Country[0]”
                                         ValueMember=”Country[0]”
                                         ItemsSource=”{Binding Orders}”>
    <syncfusion:SfMultiColumnDropDownControl.Columns>
        <syncfusion:GridTextColumn MappingName=”OrderID” />
        <syncfusion:GridTextColumn MappingName=”ProductID” />
        <syncfusion:GridTextColumn MappingName=”CustomerID” />
        <syncfusion:GridTextColumn MappingName=”Country[0]” />
    </syncfusion:SfMultiColumnDropDownControl.Columns>
</syncfusion:SfMultiColumnDropDownControl>

Binding the indexer properties with SfMultiColumnDropDownControl wpf