EnableAutomaticLoadOnDemand and SelectedValue for existing data

[Ben]

I have a radComboBox in a usercontrol within a RadGrid.

The combo box contains a list of approx 3000 clients, so I have set EnableAutomaticLoadOnDemand = true so that when open the usercontrol, the load time of the form is quite fast.

This works well for adding new records, however when I am trying to edit a record which already has a client set, the SelectedValue property will fail to pick the value from the list (as I guess it hasn't been loaded yet).  As soon as I revert to the default of EnableAutomaticLoadOnDemand = false as shown in my code snippet below, then the SelectedValue property will correctly set the value from the list, but this then takes a couple of seconds to load the combo data.

Is there any way that I can set EnableAutomaticLoadOnDemand = true, while also getting the SelectedValue property to set the correct value from the data source?  (As an added complication, I also have a "Select from Template" combo box which will set various values in other text boxes and combo boxes, which I would also like to use with EnableAutomaticLoadOnDemand = true.)

Thanks for your help,
Ben

 

<tr>

 

 

<td>

 

Client

 

</td>

 

 

<td>

 

 

<telerik:RadComboBox ID="cboClient" Runat="server" AllowCustomText="true"

 

 

DataSourceID="SqlDataSource1" DataTextField="Account" DataValueField="ClientID"

 

 

Skin="Outlook"

 

 

 

SelectedValue='<%# DataBinder.Eval( Container, "DataItem.ClientID") %>'

 

 

 

Width="320px" EnableVirtualScrolling="True"

 

 

 

Filter="Contains" ItemsPerRequest="20" ShowMoreResultsBox="True">

 

 

<itemtemplate>

 

 

<table style="width:300px">

 

 

<tr>

 

 

<td style="width:100px; text-align: left;">

 

<%

#DataBinder.Eval(Container.DataItem, "Account")%>

 

 

 

</td>

 

 

<td style="width:200px; text-align: left;">

 

<%

#DataBinder.Eval(Container.DataItem, "Disp")%>

 

 

 

</td>

 

 

</tr>

 

[Vasil]

Hi Ben,

The default value cannot be set for RadComboBox when EnableAutomaticLoadOnDemand is set to 'true'. This is because in this case there are no items in the RadComboBox and thus no item corresponding to the selected value can be found. However, you can try setting the RadComboBox Text property. In this case you might need to enable typing for the RadComboBox.

Best wishes,
Vasil
the Telerik team