This is a migrated thread and some comments may be shown as answers.

Error in callback with Q2 release

1 Answer 121 Views

ComboBox

This is a migrated thread and some comments may be shown as answers.

Imtiaz asked on 04 Aug 2008, 10:11 PM

Hi

I installed Q2 7.23 release and now I am getting error in call back, here is the scenario.

1. Search and select 1 item
2. remove item
3. try searching again
gets "Error in call back" js message

Here is the defination.

    
            <telerik:RadComboBox   
        
                Id="SearchCombo" 
        
                Runat="server" 
        
                EnableLoadOnDemand="True" 
        
                OnItemsRequested="SearchCombo_ItemsRequested" 
        
                LoadingMessage="Searching..." 
        
                EmptyMessage="Search ..." 
        
                Height="15px" 
        
                Width="315px" 
        
                DropDownWidth="400px" 
        
                Skin="Sunset" 
        
                OnSelectedIndexChanged="SearchCombo_SelectedIndexChanged" 
        
                OnClientItemsRequesting="HandleRequestStart" 
        
                OnClientKeyPressing="HandleKeyPress" 
        
                BackColor="#E0E0E0" 
        
                BorderColor="Transparent" 
        
                CollapseDelay="200" 
        
                ExpandDelay="300" 
        
                ItemRequestTimeout="200" 
        
                ShowDropDownOnTextboxClick="False" 
        
                ShowWhileLoading="False" 
        
                AutoPostBack="true" 
        
                ShowToggleImage="False" 
        
                ShowMoreResultsBox="True" 
        
                CausesValidation="False" 
        
                OnClientItemsRequested="HandleRequestEnd" 
        
                HighlightTemplatedItems="True">  
        
                <ItemTemplate> 
        
                    <div  class="AssocSearchItemContainer" > 
        
                        <div style=" float:left;">  
        
                            <img alt='<%# Eval("Title")%>' height="40px" src='<%# Eval("ThumbnailURL")%>' /> 
        
                        </div> 
        
                        <div class="AssocSearchItemTextBlock">  
        
                            <strong><%# Eval("Title")%></strong><br /> 
        
                            <%# Eval("Description")%><br /> 
        
                            <%# Eval("Details")%><br /> 
        
                        </div> 
        
                    </div> 
        
                </ItemTemplate> 
        
                <CollapseAnimation Duration="100" Type="OutQuint" /> 
        
                <ExpandAnimation Type="None" /> 
        
            </telerik:RadComboBox>

Thanks
Imtiaz

1 Answer, 1 is accepted

answered on 04 Aug 2008, 10:32 PM

The soultion is to set comboBox.SelectedValue = ""; 

in ItemsRequested event.

             protected void SearchCombo_ItemsRequested(object sender, RadComboBoxItemsRequestedEventArgs e)  
        
                    {  
        
                        string searchPhrase = e.Text.Trim();  
        
                        e.EndOfItems = true;  
        
                        if (e.NumberOfItems > 0)  
        
                        {  
        
                            // ignore requests for more items  
        
                            return;  
        
                        }  
        
                        RadComboBox comboBox = (RadComboBox)sender;  
        
                        comboBox.SelectedValue = "";

Thanks
Imtiaz