In want to have a DropDownList inside the InsertItemTemplate of my ReorderList.

Like this:
<asp:DropDownList ID="NewRecipientsList" runat="server" Width="180px"
                              DataSourceID="NewRecipientsSrc" DataTextField="UserName" DataValueField="UserId"
                              SelectedValue='<%# Bind("UserId") %>' />


But I get this error message at runtime:
"Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control."

Which I don't understand. Using a TextBox instead works perfectly:
<asp:TextBox ID="Test" runat="server" Text='<%# Bind("UserId") %>' />

And using the dropdownlist in other controls, like FormView or DetailsView does work. I can't understand why the combination of ReorderList + DropDownList doesn't work.

Are you sure that's causing the problem?  I just tried this with the ReorderList sample page and it worked fine - both in the EditTemplate and InsertTemplate.

No, I'm not sure.
As I said, I don't understand why this doesn't work. But I've noticed that replacing the DropDownList with a TextBox works.

May it be that the error message is misleading ? The "UserId" I'm binding to is a SqlServer uniqueidentifier, could that be a problem ? (Although I think I tried to bind to UserName, which is a string, and it didn't work either)

Are you sure it's not the binding of the DropDownList itself that's having problems?  Meaning I notice that it's also databound to another data source.

Yes, I'm sure of that.
If I simply remove the SelectedValue='<%# Bind("UserId") %>' attribute, the problem goes away (and the dropdown is correctly filled).

I would like to know what I am doing wrong, too.  I am getting the same error.  Here is the code for my page:

 <h3>

Sort and Add new Categories</h3>

Select Parent Category to Sort:<br />

<asp:DropDownList ID="DropDownList1" runat="server" AppendDataBoundItems="True" AutoPostBack="True"

DataSourceID="CatListDataSource" DataTextField="CategoryName" DataValueField="CategoryID">

<asp:ListItem Value="-1">&lt;Select Parent Category&gt;</asp:ListItem>

<asp:ListItem Value="0">Top Level</asp:ListItem>

</asp:DropDownList><br />

<br />

<asp:ObjectDataSource ID="CatListDataSource" runat="server" DeleteMethod="Deletecategory"

InsertMethod="AddCategory" OldValuesParameterFormatString="{0}" SelectMethod="GetCategories"

TypeName="Categories" UpdateMethod="UpdateCategory">

<DeleteParameters>

<asp:Parameter Name="categoryid" Type="Int32" />

</DeleteParameters>

<UpdateParameters>

<asp:Parameter Name="categoryid" Type="Int32" />

<asp:Parameter Name="categoryname" Type="String" />

<asp:Parameter Name="parentcategoryid" Type="Int32" />

<asp:Parameter Name="sortorder" Type="Int32" />

</UpdateParameters>

<InsertParameters>

<asp:Parameter Name="categoryname" Type="String" />

<asp:Parameter Name="parentcategoryid" Type="Int32" />

<asp:Parameter Name="sortorder" Type="Int32" />

</InsertParameters>

</asp:ObjectDataSource>

<atlas:ScriptManager id="MasterScriptManager" EnableScriptGlobalization="false" runat="Server">

</atlas:ScriptManager>

<cc1:reorderlist id="ReorderList1" runat="server" allowreorder="True" callbackcssstyle="callbackStyle"

datakeyfield="categoryid" datasourceid="CatKidsDataSource" sortorderfield="sortorder" ItemInsertLocation="End">

<ItemTemplate>

<div class="itemArea">

<b>Category: </b><asp:Label ID="Label4" runat="server" Text='<%# HttpUtility.HtmlEncode(Convert.ToString(Eval("CategoryName"))) %>'></asp:Label>

</div>

</ItemTemplate>

<ReorderTemplate>

<asp:Panel ID="Panel2" runat="server" CssClass="reorderCue">

</asp:Panel>

</ReorderTemplate>

<InsertItemTemplate>

<div style="padding-left:25px; border-bottom:thin solid transparent;border-top:thin solid transparent;">

<asp:Panel ID="panel1" runat="server" DefaultButton="Button1">

Insert a new Category here<br />

Category Name<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="Category"

ErrorMessage="Please enter a question" ValidationGroup="Insert">*</asp:RequiredFieldValidator>

<asp:TextBox ID="Category" Text='<%# Bind("CategoryName")%>' runat="server"></asp:TextBox><br />

Parent Category:<br />

&nbsp;<asp:DropDownList ID="ParentName" runat="server" DataSourceID="CatList2DataSource"

DataTextField="CategoryName" DataValueField="CategoryID" ValidationGroup="Insert" AppendDataBoundItems="True" SelectedValue='<%# Eval("ParentCategoryID") %>'>

<asp:ListItem Value="0">Top Level</asp:ListItem>

</asp:DropDownList><asp:ObjectDataSource ID="CatList2DataSource" runat="server" OldValuesParameterFormatString="original_{0}"

SelectMethod="GetCategories" TypeName="Categories"></asp:ObjectDataSource>

&nbsp;

<asp:Button ID="Button1" runat="server" CommandName="Insert" Text="Add" ValidationGroup="Insert"></asp:Button>

</asp:Panel>

</div>

</InsertItemTemplate>

</cc1:reorderlist>

<asp:ObjectDataSource ID="CatKidsDataSource" runat="server" InsertMethod="AddCategory"

OldValuesParameterFormatString="original_{0}" SelectMethod="GetCategoriesByParent"

TypeName="Categories" UpdateMethod="UpdateCategory" DeleteMethod="Deletecategory">

<UpdateParameters>

<asp:Parameter Name="categoryid" Type="Int32" />

<asp:Parameter Name="categoryname" Type="String" />

<asp:Parameter Name="parentcategoryid" Type="Int32" />

<asp:Parameter Name="sortorder" Type="Int32" />

</UpdateParameters>

<SelectParameters>

<asp:ControlParameter ControlID="DropDownList1" Name="parentid" PropertyName="SelectedValue"

Type="Int32" />

</SelectParameters>

<InsertParameters>

<asp:Parameter Name="categoryname" Type="String" />

<asp:Parameter Name="parentcategoryid" Type="Int32" />

<asp:Parameter Name="sortorder" Type="Int32" />

</InsertParameters>

<DeleteParameters>

<asp:Parameter Name="categoryid" Type="Int32" />

</DeleteParameters>

</asp:ObjectDataSource>

I had the same problem.  To get around the problem I added some hidden fields that the dropdown updated, and bound the hidden fields and this worked for me:

<InsertItemTemplate>

<!-- bottom border is workaround for IE7 Beta issue where bg doesn't render -->

<div style="padding-left:25px; border-bottom:thin solid transparent;">

<asp:Panel ID="panel1" runat="server" DefaultButton="Button1">

<asp:DropDownList ID="DDLResources" runat="server"

OnPreRender="DDLResources_PreRender" ValidationGroup="Add" OnSelectedIndexChanged="DDLResources_SelectedIndexChanged" />

<asp:HiddenField ID="hdnResourceId" runat="server" value='<%# Bind("ResourceId") %>' />

<asp:HiddenField ID="hdnResourceCode" runat="server" value='<%# Bind("ResourceCode") %>' />

<asp:Button ID="Button1" runat="server" CommandName="Insert" Text="Add" ValidationGroup="Add"/>

</asp:Panel>

</div>

</InsertItemTemplate>

I have same issue. and I cant reach dropdownlist from codebehind. its returning null. any idea?

 

Hey i ahve the same problem. can you look into my QQ.i copied below.

 I got a QQ on AJAX Reorderlist Itemtemplate.

I am using two reorderlist controls with in a page. Reorderlis1 contains pending records. I just load the pending records. the records can be moved from Reorderlist 1 to Reordrlist 2 with add button. In this table I am not doing reordering .

Reorderlist2 contains Queued records. In this I will do the reordering, the records which are there in Reorderlist 2 , transfer the records into the tasktable. In this table I have the cancel button also. If user don’t want to update some records they can moved back those records from Recorder list 2 to Recorderlist 1. I am done with this part. My 1st QQ:

Now I added Dropdownlist control to the Reorderlist 1 Item tamplate. Item template dropddownlist is my user control.My dropdown list contains the list of years. So I am calling my Usercontrol method with the Itrmtamplate dropdownlist ID. Here I got below error. 'ddlbeginyod1' is my Reorderlist Item template dropdownlist ID Text. Why??

Error:The name 'ddlbeginyod1' does not exist in the current context.

I tried adding the dropdownlist in insertitem template also. There also I got the same issue.

I never worked with Ajax Reorderlist control. I am very confused with this control.

 I can add Dropdown list to the Reordrlist Itemtamplate right ? If I can add the dropdownlist into the item template I have 2nd QQ?

• If I can load the dropdownlist. For each row I will be having the year dropdownlist right. When user selects first row and moved from the reorderlist1 to reorderlist 2 with add button. he has to select the year of that row.

I need to send year value by each row to task table. Can I do that with reorderlist item template.How can I store the year value.If so, how can I do that? Please any one know the answer ,,please suggest me … Its really important to me.

I copying my 1st reorderlist design page below,

<ajax:ReorderList runat="server" CssClass="ReOrderList" ID="rolpendsearch" Width="370" ToolTip="Records To be imported"

AllowReorder="true" PostBackOnReorder="true" DataKeyField="InputFileID" ItemInsertLocation="End" EnableViewState="true"> 

<ItemTemplate>

<div class="ItemTemplate" align="right">

<td> <users:DeathYearDropdownList runat="server" ID="ddlbeginyod1" OnSelectedIndexChanged="ddlbeginyod1_OnSelectedIndexChanged" /> </td>

<td><users:DeathYearDropdownList runat="server" ID="ddlendyod1" OnSelectedIndexChanged="ddlendyod1_OnSelectedIndexChanged" /> </td> <td> <asp:Button runat="server" ID="btnsearch" CommandArgument='<%#Eval("InputFileID")%>' Visible=true

CssClass="button" ToolTip="Add To Search Queue" Text="To Search Queue" OnClick="btnsearch_Click" /></td></div>

</ItemTemplate>

<InsertItemTemplate>

<div class="ItemTemplate" align="right">

<td> <users:DeathYearDropdownList runat="server" ID="ddlbeginyod1" OnSelectedIndexChanged="ddlbeginyod1_OnSelectedIndexChanged" /> </td>

</div></InsertItemTemplate>

<EmptyListTemplate>

<asp:Panel ID="Panel2" runat="server" CssClass="ItemTemplate" Width="330px" >

<table width="330Px" title="No Records Queued to Add." summary="No Records Queued to Add.">

<tr title="No Records Queued to Add."> <th title="No Records Queued to Add.">

<th title="No Records Queued to Add."><b>No Records Queued to Add.</b></th>

</tr>

</table>

</asp:Panel>

</EmptyListTemplate> 

<ReorderTemplate>

<asp:Panel ID="Panel1" runat="server" Width="400px" CssClass="ReorderTemplate" />

</ReorderTemplate> 

<DragHandleTemplate>

<table class="DragHandleTemplate" style="width:350px;text-align:left;" align="left"

summary="<%# GetToolTip1("FileName:" +Eval("InputFileName").ToString() )%>"

title="<%# GetToolTip1("FileName:" +Eval("InputFileName").ToString())%>">

<tr>

<td><asp:Label ToolTip='<%# GetToolTip1("FileName:" +Eval("InputFileName").ToString())%>' runat="server" ID="fname" Text='<%#Eval("CustName")%>' /></td>

<td><asp:Label ToolTip= "Records" runat="server" ID="Rowcount" Text='<%# "Records:" +Eval("IFRowCt")%>' /></td>

</tr> 

</table>

</DragHandleTemplate> 

</ajax:ReorderList>