How to remove a blank row in combobox

[Joe]

i insert a item to the radcombobox by code behind.

<telerik:RadComboBox runat="server" ID="RadComboBox_Project" EnableOverlay="true"
                      DataTextField="DisplayName"  DataValueField="ProjectID" Skin="Sunset"
                              EnableLoadOnDemand="True" DataSourceID="ObjectDataSource2"
                      OnSelectedIndexChanged="RadComboBox_Project_SelectedIndexChanged" AutoPostBack="True"
                              HighlightTemplatedItems="true" Label="" Width="100%" NoWrap="True">
                              <HeaderTemplate>
                                   <ul>
                                        <li class="col1">Project Number | Project Name</li>
                                        <%--<li class="col2"></li>--%>
                                   </ul>
                              </HeaderTemplate>
                              <ItemTemplate>
                                   <ul>
                                        <li class="col1"><%# Eval("ProjectNumber") + " | " + Eval("ProjectName")%></li>
                                        <%--<li class="col2"><%# Eval("ProjectName") %></li>--%>
                                   </ul>
                              </ItemTemplate>
<%--                              <Items>
                                            <telerik:RadComboBoxItem Text="Select a Project" Value="0" />
                                </Items>--%>
                         </telerik:RadComboBox>

Code Behind:

Protected Sub RadComboBox_Project_DataBound(ByVal sender As Object, ByVal e As System.EventArgs) Handles RadComboBox_Project.DataBound
    Dim combo As RadComboBox = DirectCast(sender, RadComboBox)
    If combo.Items.Count > 1 Then
        combo.Items.Insert(0, New RadComboBoxItem("Select a Project", String.Empty))
    End If
End Sub

but it display a empty row in the combobox, how to remove it ? thanks

[Nencho]

Hello Joe,

The observed blank row is actually the SelectedItem ("Select a Project"). Please try to explicitly call the DataBind method on the newly created RadComboBoxItem, in order to overcome the problematic behavior. Please consider the following implementation:

Protected Sub RadComboBox_Project_DataBound(ByVal sender As Object, ByVal e As System.EventArgs) Handles RadComboBox_Project.DataBound
       Dim combo As RadComboBox = DirectCast(sender, RadComboBox)
       If combo.Items.Count > 1 Then
           Dim item As RadComboBoxItem = New RadComboBoxItem
           item.Text = "Select a Project"
           RadComboBox_Project.Items.Insert(0, item)
           item.DataBind()
       End If
   End Sub

Regards,
Nencho
Telerik