I am not using <Item Template> at this point and when I add the line of code wddRecipients.DataBind() at the very end of Page_Load just before the End Sub, I get the following error:

Server Error in '/' Application.

---

Object reference not set to an instance of an object.

[NullReferenceException: Object reference not set to an instance of an object.]
   Veritext.VIP21.Web.SendNotices.RecipientChanged() +119
   Veritext.VIP21.Web.SendNotices.wddRecipients_ValueChanged(Object sender, DropDownValueChangedEventArgs e) +70
   Infragistics.Web.UI.ListControls.WebDropDown.OnValueChanged(DropDownValueChangedEventArgs e) +115
   Infragistics.Web.UI.ListControls.DropDownBot.RaisePostDataChangedEvent() +2035
   Infragistics.Web.UI.Framework.RunBot.HandleRaisePostDataChangedEvent() +213
   Infragistics.Web.UI.Framework.Data.FlatDataBoundControl.RaisePostDataChangedEvent() +34
   System.Web.UI.Page.RaiseChangedEvents() +165
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1485

Hello Jay,

Could you try to rebind the dropdown on each postback please. This should solve the issue with the missing items.

Were you able to install the service pack?

Let me know the result.

Excellent, that made the trick.   I also had changed the AutoPostBackFlags already.

It seems that I'm using version 10.2 see this:

Register

="Infragistics35.Web.v10.2, Version=10.2.20102.1011,

Do I still need to install the service pack?

Thank you so much for your help.

John

Hi John,

Great! It's nice to hear that the issue is resolved.  In my previous post I addressed Jay's issue which is similar to yours.  If you do not experience any issues with this version my advice is to keep it running. If you find out  any is good to know that there are  hot fixes available.

Thanks.

I made all the same changes and am definitely using version 10.2 only.

Now when I hover over the dropdown arrows on the webdropdown, they flicker.

It seems like the size is getting slightly larger and smaller very rapidly giving it the flickering effect.

I can however eventually get a click event to trigger and when I do it a second time again the data does not appear.  So I still have the same problem in addition to the new problem of the flickering.

I am not doing a databind of the webdropdown except for on every postback in the page_load event.

Hi 

I am using webdropdown with itemtemplate and on the postback i cannot see the dataitems but can select them i am doing a databind on every postback too can you please let me know if we need to do anything else.

<ig:WebDropDown runat="server" ID="ddlCSModel" Width="200px"

                        loadingItemsMessageText ="loading..." 

                        AutoPostBack="true" 

                        DropDownContainerHeight="150px"

                        DropDownContainerWidth="500px"

                        OnSelectionChanged="ddlCSModel_SelectionChanged"

                    >

                        <HeaderTemplate>

                            <table style="width: 100%; height: 40px; background-color:DarkBlue;color: White; font-size: 20px; font-weight: bold;" cellspacing="0" cellpadding="4">

                                <tr>

                                    <td style="width: 350px;">

                                        Model Name

                                    </td>

                                    <td style="width: 150px;">

                                        As of Date

                                    </td>

                                </tr>

                            </table>

                        </HeaderTemplate>

                        <ItemTemplate>

                            <table style="width: 100%;" cellspacing="0" cellpadding="4">

                                <tr style="border-bottom: solid 1px #ff0000;">

                                    <td style="width: 350px;">

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

                                    </td>

                                    <td style="width: 150px; padding-left: 10px;">

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

                                    </td>

                                </tr>

                            </table>

                        </ItemTemplate>

                    </ig:WebDropDown>