Hi Kevin,

If you disable ViewState (EnableViewState=false), and do DataBind on every postback, I think there shouldn't be any noticeable performance hit.

Please let me know if you notice any degradation there.

Thanks,

Angel 

I have the same issue and I have done what is suggested above but I still have empty items when I select the 2nd time. Here is the code. Why wont the webdropdown display the items the 2nd time? If I remove the ItemTemplate all is well except that the items are shown as hyperlinks which I do not want.

        <ig:WebDropDown ID="webDropDownProvince0" runat="server" DisplayMode="DropDownList"
            Width="200px" TabIndex="4"
            AutoPostBack="True"
            ondatabound="webDropDownProvince0_DataBound"
            onselectionchanged="webDropDownProvince0_SelectionChanged"
            EnableViewState="False">
            <DropDownItemBinding TextField="ProvinceName" ValueField="ProvinceName" />
            <ItemTemplate>
                <%# DataBinder.Eval(Container.DataItem, "ProvinceName")%>
            </ItemTemplate>
        </ig:WebDropDown>

Ok now it's clear to me. DataItem for controls is not kept in ViewState, only the item is - that is, the actual DropDownItem. Therefore if you do templating and bind in this way, referring to the DataItem, this is the expected behavior.

To fix this, you can call DataBind() on every postback , and it will work fine. 

Thanks,

Angel 

By the way, you don't need to use ItemTemplate if you only want to show text , you can bind the Text property and it will automatically render the item's text. 

Thanks,

Angel 

I do call DataBind on each PostBack and I still have the same result.

What do you mean by bind the Text property?

            if (!IsPostBack)
            {
                DataTable dt = new DataTable();
                dt.Columns.Add("ProvinceName");
                dt.Rows.Add("British Columbia");
                dt.Rows.Add("Alberta");
                dt.Rows.Add("Saskatchewan");
                dt.Rows.Add("Manitoba");
                dt.Rows.Add("Ontario");
                dt.Rows.Add("Quebec");
                dt.Rows.Add("New Brunswick");
                dt.Rows.Add("Nova Scotia");
                dt.Rows.Add("Newfoundland/Labrador");
                dt.Rows.Add("Prince Edward Island");
                dt.Rows.Add("Nunavut");
                dt.Rows.Add("Yukon");
                dt.Rows.Add("Northwest Territories");

                webDropDownProvince0.DataSource = dt;
                webDropDownProvince0.ValueField = "ProvinceName";
                webDropDownProvince0.TextField = "ProvinceName";
            }
            webDropDownProvince0.DataBind();