How Do I Create A Dropdownlist That Binds To A Listview Control?

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C#

LINQ

ddl_names' has a SelectedValue which is invalid because it does not exist in the list of items.
Parameter name: value

this is what i have so far i get the above error

---

<%--Headings for Product info--%>



<asp:ListView ID="ListView1" runat="server" onitemdatabound="ListView1_ItemDataBound">
<itemtemplate>

Name	Description	Price
<asp:HiddenField ID="hdf_idE" runat="server" Value ='<%#Eval ("id") %>' /> <asp:DropDownList ID="ddl_names" runat="server" Text='<%#Bind ("productName") %>' />	<asp:Button ID="btn_update" runat="server" Text="Update" CommandName ="Update" ValidationGroup="update" /> <asp:Button ID="btn_delete" runat="server" Text="Delete" CommandName="Delete" OnClientClick="return confirm('Confirm Delete?');" /> <asp:Button ID="btn_cancel" runat="server" Text="Cancel" CommandName="Cancel" CausesValidation="false"/> <%--Buttons for insert and cancel, delete --%>

public partial class _Default : System.Web.UI.Page
{
private void _subRebind()
{

//create new instance of the the DataContext class that we have just created

productsDataContext db = new productsDataContext();

FillListView(db);


}

private void FillListView(productsDataContext db)
{

//LINQ syntax

//Select the ProductID and ProductName from Products

var allProducts = from c in db.products

select new

{

Id = c.Id,

ProductName = c.productName,

ProductDesc = c.productDesc,

ProductPrice = c.productPrice,

};


if (allProducts.Any())
{
ListView1.DataSource = allProducts;
ListView1.DataBind();
}
else
{
}
}


protected void ListView1_ItemDataBound(object sender, ListViewItemEventArgs e)
{
using (var db = new productsDataContext())
{
var allProducts = from c in db.products

select new

{

Id = c.Id,

ProductName = c.productName,

ProductDesc = c.productDesc,

ProductPrice = c.productPrice,

};


DropDownList ddlNames = (DropDownList)e.Item.FindControl("ddl_names");
if (ddlNames != null)
{
foreach (var item in allProducts)
{

if (item.ProductName != null)
{
ddlNames.Items.Add(new ListItem("productDesc", "productName"));
}

}
}
_subRebind();


//Bind the ListView



}
}

protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack) // Shows if the page is visited for the first time
{
_subRebind();
}

}


}