Nested User Control (ListView) in ListView doesn't get bound - asp.net

Question

Hi I am trying to implement a nested user control in listview and the user control doesn't get bound.
Here is my code.
<asp:ListView ID="ListViewTaskList" runat="server" DataKeyNames="TaskID"
DataSourceID="SqlDataSourceTaskList" OnItemDataBound="ListViewTaskListItemDataBound" ItemPlaceholderID="itemPlaceholder">
<LayoutTemplate>
<div class="ListView ">
<div style="font-size:2em;color:#555555;margin-bottom:20px;">Task List</div>
<div ID="itemPlaceholder" runat="server">
</div>
</div>
</LayoutTemplate>
<ItemTemplate>
<div class="rlvI">
<asp:Label ID="TaskIDLabel" runat="server" Text='<%# Eval("TaskID") %>' />
<asp:Label ID="TaskLabel" runat="server" Text='<%# Eval("Task") %>' />
<asp:Label ID="CreatedDateLabel" runat="server" Text='<%# Eval("CreatedDate") %>' />
<asp:Label ID="UpdatedDateLabel" runat="server" Text='<%# Eval("UpdatedDate") %>' />
<asp:Label ID="TimestampLabel" runat="server" Text='<%# Eval("Timestamp") %>' />
<asp:Label ID="TaskTypeIDLabel" runat="server" Text='<%# Eval("TaskTypeID") %>' />
<asp:Label ID="ProjectTaskStatusIDLabel" runat="server" Text='<%# Eval("ProjectTaskStatusID") %>' />
<asp:Label ID="SystemObjectIDLabel" runat="server" Text='<%# Eval("SystemObjectID") %>' />
<asp:Label ID="SystemObjectRecordIDLabel" runat="server" Text='<%# Eval("SystemObjectRecordID") %>' />
<asp:CheckBox ID="ActiveCheckBox" runat="server" Checked='<%# Eval("Active") %>' Enabled="false" />
<asp:Label ID="CreatedByAccountIDLabel" runat="server" Text='<%# Eval("CreatedByAccountID") %>' />
<asp:Label ID="UpdatedByAccountIDLabel" runat="server" Text='<%# Eval("UpdatedByAccountID") %>' />
<asp:Button ID="SelectButton" runat="server" CausesValidation="False" CommandName="Select" CssClass="rlvBSel" Text=" " ToolTip="Select" />
<div>
<Enet:Comments ID="Comments1" runat="server" systemObjectID='8' systemObjectRecordID="Comments1Init" />
</div>
</div>
</ItemTemplate>
<AlternatingItemTemplate>
<div class="rlvA">
<asp:Label ID="TaskIDLabel" runat="server" Text='<%# Eval("TaskID") %>' />
<asp:Label ID="TaskLabel" runat="server" Text='<%# Eval("Task") %>' />
<asp:Label ID="CreatedDateLabel" runat="server"
Text='<%# Eval("CreatedDate") %>' />
<asp:Label ID="UpdatedDateLabel" runat="server"
Text='<%# Eval("UpdatedDate") %>' />
<asp:Label ID="TimestampLabel" runat="server"
Text='<%# Eval("Timestamp") %>' />
<asp:Label ID="TaskTypeIDLabel" runat="server"
Text='<%# Eval("TaskTypeID") %>' />
<asp:Label ID="ProjectTaskStatusIDLabel" runat="server"
Text='<%# Eval("ProjectTaskStatusID") %>' />
<asp:Label ID="SystemObjectIDLabel" runat="server"
Text='<%# Eval("SystemObjectID") %>' />
<asp:Label ID="SystemObjectRecordIDLabel" runat="server"
Text='<%# Eval("SystemObjectRecordID") %>' />
<asp:CheckBox ID="ActiveCheckBox" runat="server"
Checked='<%# Eval("Active") %>' Enabled="false" />
<asp:Label ID="CreatedByAccountIDLabel" runat="server"
Text='<%# Eval("CreatedByAccountID") %>' />
<asp:Label ID="UpdatedByAccountIDLabel" runat="server"
Text='<%# Eval("UpdatedByAccountID") %>' />
<asp:Button ID="SelectButton" runat="server" CausesValidation="False"
CommandName="Select" CssClass="rlvBSel" Text=" " ToolTip="Select" />
<div>
<Enet:Comments ID="Comments1" runat="server" systemObjectID='8' '<%# Eval("TaskID") %>' />
</div>
</div>
</AlternatingItemTemplate>
``
I have been struggling with this problem for a few days now.
Please help!!
Please help!

Answer 1

if I look at your code, it seems to me that you aren't actually assigning the binding to anything:
<Enet:Comments ID="Comments1" runat="server" systemObjectID='8' '<%# Eval("TaskID") %>' />
try instead
<Enet:Comments ID="Comments1" runat="server" systemObjectID='8' YourProperty='<%# Eval("TaskID") %>' />
EDIT: in order to achieve two way data binding, one has to add BindableAttribute to the property on User Control