TreeListComboBoxColumn Class

A data column with the combo box editor.

Namespace: DevExpress.Web.ASPxTreeList

Assembly: DevExpress.Web.ASPxTreeList.v19.2.dll

Declaration

C#
VB.NET

public class TreeListComboBoxColumn :
    TreeListEditDataColumn

Public Class TreeListComboBoxColumn
    Inherits TreeListEditDataColumn

Remarks

The TreeListComboBoxColumn object is a data column whose values are edited by the combo box editor. Use the TreeListComboBoxColumn.PropertiesComboBox property to access and customize the column editor’s settings.

ASPX

<dx:ASPxTreeList ID="ASPxTreeList1" runat="server" DataSourceID="SqlDataSource1" KeyFieldName="CustomerID"  >
    <Columns>
        <dx:TreeListTextColumn FieldName="CompanyName" VisibleIndex="0" />
        <dx:TreeListComboBoxColumn FieldName="City" VisibleIndex="1">
            <PropertiesComboBox DataSourceID="SqlDataSource2" TextField="City" />
        </dx:TreeListComboBoxColumn>
    </Columns>
</dx:ASPxTreeList>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="..." 
    SelectCommand="SELECT [CustomerID], [CompanyName], [City] FROM [Customers]" />
<asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="..." 
    SelectCommand="SELECT [City] FROM [Customers]" />

Note

The TreeListComboBoxColumn object does not support database server mode.