Multiple Selections

[David Penny]

Hi,

I have followed the example from here (http://www.telerik.com/community/code-library/aspnet-ajax/combobox/radcombobox-advanced-multiple-selection.aspx) and although the checkboxes are displayed and allow multiple selections, my combobox text is now empty. 

I am manually binding the combobox using the following:

Dim dt As DataTable
dt = ListProjects()
cbox.Items.Clear()
For Each row As DataRow In dt.Rows
    Dim item As New RadComboBoxItem()
    item.Text = row("Name").ToString
    item.Value = row("ID").ToString
    cbox.Items.Add(item)
Next

This is getting called in PageLoad.  If I take out the Item Template it displays all my entries fine, but obviously without the checkbox.  Do I need to do something different in this scenario?

David Penny

[Yana]

Hi David,

When you have templates in RadComboBox, the text of the item is not shown by design, so you should add it manually in the template. In your case it can be set in Text property of the checkbox like this:

<ItemTemplate>
    <asp:CheckBox runat="server" ID="CheckBox" onclick="checkboxClick();"  Text='<%# DataBinder.Eval(Container, "Text") %>' />
</ItemTemplate>

All the best,
Yana
the Telerik team

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[David Penny]

Hi Yana,

Yes, that's what I am doing.  My definition is (taken almost directly from the example):

<telerik:RadComboBox ID="ProjectFrom" runat="server" Width="100%">
                        <CollapseAnimation Type="OutQuint" Duration="200"></CollapseAnimation>
                        <ItemTemplate>
                            <asp:CheckBox runat="server" ID="CheckBox" onclick="stopPropogation();" Text='<%# DataBinder.Eval(Container, "Text") %>' />
                        </ItemTemplate>
                    </telerik:RadComboBox>

Without the ItemTemplate it shows my data values as expected.  As soon as I add the ItemTemplate I see the checkbox, but no text.  The only difference appears to be that I am loading the radcombobox in code and not manually.

David Penny

[David Penny]

Hi again Yana,

after replying to you, I went and changed the binding code to:

dt = ListProjects(StaffID, False, SearchValue, False)
cbox.Items.Clear()
Dim item0 As New RadComboBoxItem("")
item0.Value = "0"
cbox.Items.Add(item0)
cbox.DataTextField = "Name"
cbox.DataValueField = "ID"
cbox.DataSource = dt
cbox.DataBind()

This works now, so it must be something to do with the way I was manually binding values to the combox.

David Penny