When to use

by tshad on 11/1/2007 10:28:00 AM I am confused as to when to use "Container.DataItem" and when to use
DataBinder.Eval(Container.DataItem, xxx)"?

In my VB.Net pages I use Container.DataItem.

In one of my pages I have the following (where RunProcedure just sends back
a DataReader) where I use DW:
***************************************
  dbReader = myDbObject.RunProcedure("GetJobPostingsByJobTitle", parameters)
  InProgressGrid.DataSource = dbReader
  InProgressGrid.DataBind()
....
<asp:DataGrid
     AutoGenerateColumns="false"
     ID="InProgressGrid"
     runat="server" >
     <columns>
        <asp:TemplateColumn Visible="false">
         <itemtemplate>
          <asp:Label ID="PositionID" Text='<%#
Container.DataItem("PositionID")%>' runat="server"/>
         </itemtemplate>
        </asp:TemplateColumn>
     </columns
   </asp:DataGrid>
************************************************

In this one I use "Container.DataItem("PositionID")" to get the data during
the DataBind.

But when I was creating this in VS 2003 C#:

*************************************************************
DataGrid1.DataSource = cmd.ExecuteReader();
DataGrid1.DataBind();
....

<asp:DataGrid id="DataGrid1" style="Z-INDEX: 101; LEFT: 88px; POSITION:
absolute; TOP: 48px" runat="server">
<Columns>
  <asp:TemplateColumn HeaderText="The Title">
   <ItemTemplate>
    <asp:Label ID="title" Text='<%# DataBinder.Eval(Container.DataItem,
"title") %>' Runat="server" />
   </ItemTemplate>
  </asp:TemplateColumn>
</Columns>
</asp:DataGrid>
***************************************************************

I had to do "DataBinder.Eval(Container.DataItem, "title")" instead of
"Container.DataItem["title"]" because the Container.DataItem["Title"] gave
me an error:

CS0021: Cannot apply indexing with [] to an expression of type 'object'

What is the problem here? Is it because of C# instead of VB.Net?

Thanks,

Tom

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