asked on

Identify top 5 rows of a DataGrid

I have the following DataGrid:

<asp:DataGrid id="dgNewsArticles" AutoGenerateColumns="False" CellPadding="1" DataKeyField="RecID"
ShowFooter="false" runat="server">
<Columns>
      <asp:BoundColumn HeaderText="RecID" DataField="RecID" Visible="False" />
      <asp:BoundColumn DataField="DisplayAs" HeaderText="News Article" />
      <asp:BoundColumn DataField="PostDate" HeaderText="Post Date" />
      <asp:HyperLinkColumn ItemStyle-Width="50px" DataNavigateUrlField="RecID" DataNavigateUrlFormatString="editFile.aspx?RecID={0}" Text="Edit" />
      <asp:HyperLinkColumn ItemStyle-Width="50px" DataNavigateUrlField="RecID" DataNavigateUrlFormatString="deleteFile.aspx?RecID={0}" Text="Delete" />
</Columns>
</asp:DataGrid>

When displaying this grid on the screen, I would like to note the top 5 rows by adding a column at the beginning with an icon in it.

Any thoughts?

Jason Scolaro

Hi russomr,

First of all, you can't really make a column specifically for the first 5 rows, but you can generate a column for the entire Grid and then only show an image for the first 5 rows. There are some alternatives, but I think this is the easiest...

Now there are multiple ways to implement this following solution, but try it this way first, add a new column:

<asp:TemplateColumn>
<ItemTemplate>
<asp:Image runat="server" Visible='<%# IIf(Container.ItemIndex <= 4, True, False) %>' ImageUrl="myGraphic.jpg" id="Image1" />
</ItemTemplate>
</asp:TemplateColumn>

This creates a new column and only shows the image for the first 5 rows, otherwise it hides the Image (doesn't render it). Good luck!

-- Jason

russomr

ASKER

I get this as an error:

The name 'IIf' does not exist in the current context

Am I missing a namespace for the IIF?

RainMan82

its just an if statement....

IIf(Container.ItemIndex <= 4, True, False) =

if (Container.ItemIndex <= 4) then
true
else
false

Jason Scolaro

Are you using C#? If so... this would be it:

<asp:Image runat="server" Visible='<%# ( (bool) ((int)Container.ItemIndex) <= 4 ? true : false) %>' ImageUrl="myGraphic.jpg" id="Image1" />

Or something close to that... I do just about everything in VB.NET... but that will work.

-- Jason

russomr

ASKER

I understand the concept, I just can't get it working. It looks like IIf is a function that you are referencing. Where is that function located? Or where do I create that function so that it can be referenced?

Am I overthinking this?

russomr

ASKER

Sorry, I just can't get this to work. I keep getting

Cannot convert type 'int' to 'bool'

I am a VB programmer that is just now getting into C#, so syntax is not my cup of tea.

Is there a different way to accomplish what I'm going for? I see how the above would work, but if I can't actually get it working, it does me no good.

ASKER CERTIFIED SOLUTION

Jason Scolaro

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russomr

ASKER

Works! Thank you. Sorry for being such a pain.