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Manually add items into ItemTemplate

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ComboBox

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11 Answers, 1 is accepted

answered on 08 Apr 2013, 02:18 PM

I was using code behind to add the items as such

With ddlApptClinic

.Items.Clear()
.Items.Insert(0, New RadComboBoxItem("Any Clinic", -1))
.Items.Insert(0, New RadComboBoxItem("", 0))

But since adding an item template this no longer works.

I have since tried your suggestion by adding them in the ASPX and that still don't show.

<telerik:RadComboBox ID="ddlApptClinic" Runat="server" Width="300px" EnableEmbeddedSkins="false" Skin="Activity" emptyMessage=" " AppendDataBoundItems="true" OnDataBound="ddlApptClinic_DataBound">

<HeaderTemplate>

<asp:Literal runat="server" ID="ltlClinicCodeHeader" />

</HeaderTemplate>

<Items>

<telerik:RadComboBoxItem runat="server" Text="Any Clinic" Value="-1" />

<telerik:RadComboBoxItem runat="server" Text="" Value="0" />

</Items>

<ItemTemplate>

<%# DataBinder.Eval(Container.DataItem, "ClinicCode")%><br />

<span class="clinicStyle"><%# DataBinder.Eval(Container.DataItem, "ClinicDescription")%></span>

</ItemTemplate>

</telerik:RadComboBox>

What an I doing wrong?

Andy

answered on 09 Apr 2013, 11:08 AM

Thanks Shinu

Still not quite right for me.

If I remove the empty message from above I have the following markup: I have also removed the blank item.

<HeaderTemplate>

<asp:Literal runat="server" ID="ltlClinicCodeHeader" />

</HeaderTemplate>

<Items>

<telerik:RadComboBoxItem runat="server" Text="Any Clinic" Value="-1" />

</Items>

<ItemTemplate>

<%# DataBinder.Eval(Container.DataItem, "ClinicCode")%><br />

<span class="clinicStyle"><%# DataBinder.Eval(Container.DataItem, "ClinicDescription")%></span>

</ItemTemplate>

</telerik:RadComboBox>

This is my server side code:

Protected Sub ClinicsBySpecialty(ByVal Specialty_ID As Int32)

'Specialty

Dim cl As New Activity_Outcomes

Dim cl_ds As Data.DataTable = cl.ClinicsBySpecialty(Specialty_ID, User_GUID)

With ddlApptClinic

'.Items.Clear()

'.Items.Insert(0, New RadComboBoxItem("Any Clinic", -1))

'.Items.Insert(0, New RadComboBoxItem("", 0))

.DataSource = cl_ds

.DataTextField = "ClinicCode"

.DataValueField = "ClinicId"

.DataBind()

.SelectedIndex = 0

End With

End Sub

I now get the Any Clinic but not as an item in the list, it only shows in the text box when the control loads. If I make any selection it disappears.

Andy

answered on 11 Apr 2013, 10:51 AM

Hello Andy,

I would suggest you to call explicitly the DataBind() method, on the manually added item. Please consider the following implementation :

'Specialty

Dim cl As New Activity_Outcomes

Dim cl_ds As Data.DataTable = cl.ClinicsBySpecialty(Specialty_ID, User_GUID)

With ddlApptClinic

ddlApptClinic.Items.Clear()

ddlApptClinic.DataSource = cl_ds

ddlApptClinic.DataTextField = "ClinicCode"

ddlApptClinic.DataValueField = "ClinicId"

ddlApptClinic.DataBind()

Dim item As RadComboBoxItem = New RadComboBoxItem("Any Clinic", "-1")

ddlApptClinic.Items.Insert(0, item)

item.DataBind()

ddlApptClinic.SelectedIndex = 0

End With

All the best,
Nencho
the Telerik team

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answered on 11 Apr 2013, 12:34 PM

Capture.PNG

Thanks Nencho

But this too adds it to the text box, but not to the list, therefor If I select a clinic I no longer get the option to select Any.

I think for now I'm going to do this in the database, so its in the data that gets bound.

Andy