This is driving me NUTS! It's something that I've done 100s of time with a Datagrid. I'm now using a Gridview and I can't figure this out.

I've got this grid:

<asp:GridView AutoGenerateColumns="false" runat="server" ID="gvSelect" CssClass="GridViewStyle"
        GridLines="None" ShowHeader="False" PageSize="20" AllowPaging="True">
        <Columns>
            <asp:TemplateField>
                <ItemTemplate>
                    <asp:Label runat="server" ID="lbldas" Text="blahblah"></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
        </Columns>

And during the RowDataBound I've tried:

Protected Sub gvSelect_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles gvSelect.RowCreated
    If e.Row.RowType = DataControlRowType.DataRow Then
        e.Row.Attributes.Add("onMouseOver", "this.style.backgroundColor='lightgrey'")
    End If
End Sub

And it NEVER sets the row backcolor.. I've been successful in using:

gridrow.Cells(0).BackColor = Drawing.Color.Blue

But doing the entire row? NOPE! and it's driving me nuts.. does ANYONE have solution for me?

And just for fun I put this on the SAME page:

<asp:DataGrid AutoGenerateColumns="false" runat="server" ID="dgSelect" GridLines="None"
        ShowHeader="False" PageSize="20" AllowPaging="True">
        <Columns>
            <asp:TemplateColumn>
                <ItemTemplate>
                    <asp:Label runat="server" ID="lbldas" Text="blahblah"></asp:Label>
                </ItemTemplate>
            </asp:TemplateColumn>
        </Columns>
    </asp:DataGrid>

And in the ItemDataBound I put:

If Not e.Item.ItemType = ListItemType.Header And Not e.Item.ItemType = ListItemType.Footer Then
        e.Item.Attributes.Add("onMouseOver", "this.style.backgroundColor='lightgrey'")
End If

And it works as expected.. SO What am I doing wrong with the Gridview?

UPDATE **************

I thought I'd post the resulting HTML to show that any styles aren't affecting this.

Here's the gridview html:

<div class="AspNet-GridView" id="gvSelect"> 
<table cellpadding="0" cellspacing="0" summary=""> 
    <tbody> 
        <tr> 
            <td> 
                <span id="gvSelect_ctl02_lbldas">blahblah</span> 
            </td> 
        </tr> 
    </tbody> 
</table> 
 </div>

And here's the resulting Datagrid HTML:

<table cellspacing="0" border="0" id="dgSelect" style="border-collapse:collapse;"> 
<tr onMouseOver="this.style.backgroundColor='lightgrey'"> 
    <td> 
        <span id="dgSelect_ctl03_lbldas">blahblah</span> 
            </td> 
</tr>
 </table> 

See.. the main difference is the tag. It never gets set in the gridview.. and I don't know why.. I've traced through it.. and the code gets run.. :S