Question

How do I bind a lookup table to a dropdown list inside a devexpress gridview control?

Asked by: lecafe

I have a column of dropdown list controls inside of a devexpress gridview.  Currently, display value of the dropdown is an integer which is a foreign key in a lookup table.  I would like the text value from the lookup table to be displayed.  As well, in edit mode, I would like the lookup table values to be shown when I click the dropdown arrow.

I am doing this programatically and not using any sqldatasource object.  The gridview displays the contents of a person datatable from a dataset.  The lookup table is from a countries datatable.  One column of the gridview is the person's country.  When the gridview is first displayed, it shows the integer of the person's country.  I am trying to get it to show the text of the person's country, which is located in a lookup table.

Any help would be greatly appreciated...  Thank you in advance.

'Below is some code that I used to bind a lookup table to a dropdown list control OUTSIDE of a Devexpress gridview control...  It works.  Now I am trying to bind the lookup table to a column of dropdown list controls INSIDE OF A GRIDVIEW. I don't know how to access the dropdown list control inside of the gridview...  Thanks in advance for your help...
 
 
        Dim oDataTable As New DataTable
 
        If Not IsPostBack Then
 
            ddlCountry.Items.Clear()
            ddlRole.Items.Clear()
 
                oDatatable = GetCacheObject(Countries)
                ddlCountry.DataSource = oDatatable
                ddlCountry.DataValueField = oDatatable.Columns("CntryID").ToString()
                ddlCountry.DataTextField = oDatatable.Columns("CntryDescriptionEn").ToString()
 
                ddlCountry.DataBind()
 
                ddlCountry.Items.Insert(0, "")
                ddlCountry.SelectedIndex = -1

                                  
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Asked On
2008-01-20 at 13:23:12ID23097063
Tags

microsoft and devexpress

,

asp.net 2.0 and devexpress gridview

,

asp.net 2.0 and devexpress aspxgridview 7.3.5

,

vb.net

,

ie

Topics

Programming for ASP.NET

,

.NET

,

Visual Studio

Participating Experts
3
Points
500
Comments
4

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Answers

 

by: hamidovtPosted on 2008-02-07 at 01:13:21ID: 20839282

In my case I have a MyProjectBusiness where my business classes are defined. There is a SubscriptionType class with SubscriptionType has Id and Name and SubscriptionTypes class with GetAll method that returns a List of SubscriptionType objects...

<%@ Import Namespace="MyProjectBusiness" %>
<%@ Import Namespace="System.Collections.Generic" %>


<asp:DropDownList ID="ddlSubscriptionType" runat="server" AppendDataBoundItems="True"
      DataSourceID="odsSubscriptionType" DataTextField="Name" DataValueField="Id"
      SelectedValue='<%# ((SubscriptionType)Eval("SubscriptionType")).Id%>' >
      <asp:ListItem Value="">None</asp:ListItem>
</asp:DropDownList>
<asp:ObjectDataSource ID="odsSubscriptionType" runat="server" SelectMethod="GetAll" TypeName="MyProjectBusiness.SubscriptionTypes" />



If this is not clear enough, please take a look at http://msdn2.microsoft.com/en-us/library/bb426884.aspx
You can download the project and see complete code. They do not have a separate business dll, but the idea is same...

 

by: Computer101Posted on 2008-03-24 at 15:16:34ID: 21197714

Forced accept.

Computer101
EE Admin

 

by: davidsperlingPosted on 2009-08-28 at 02:00:54ID: 25205848

20120131-EE-VQP-002

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