GridView Row FindControl(x) Text is blank - asp.net

Question

I have a GridView where I want to hide some of the rows when the price is 0. When I try to check the value I get a blank string for all rows.
Markup: non relevant rows have been removed for readability. getProductInfo and getPrice are lookup functions receiving and returning strings
<asp:GridView ID="gvRebuild" runat="server" AutoGenerateColumns="false" Width="100%" OnRowDataBound="gvRebuild_RowDataBound">
<Columns>
<asp:BoundField ... />
<asp:TemplateField ... />
</asp:TemplateField>
<asp:TemplateField HeaderText="Price" ItemStyle-Width="12%">
<ItemTemplate>
<asp:Label runat="server" ID="price" ><%# getPrice(getProductInfo(Eval("fieldName")))%></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField ... />
</Columns>
</asp:GridView>
Code Behind:
Protected Sub gvRebuild_RowDataBound(sender As Object, e As GridViewRowEventArgs)
Dim p As Label = e.Row.FindControl("price")
If p IsNot Nothing Then
Debug.Print(String.Format("*{0}*", p.Text))
If p.Text = "$0.00" Then
e.Row.Visible = False
End If
End If
End Sub
The debug statement is confirming that all values found in the "price" control are blank. I have also confirmed via debugger that the getPrice function is returning the correct value and firing before the RowDataBound event handler for each row.

Answer 1

You have to check the RowType. The first row will be the header row. The header row does not contain the TextBox, hence the NULL error.
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
//use findcontrol here
}
}
VB
Protected Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs)
If (e.Row.RowType = DataControlRowType.DataRow) Then
'use findcontrol here
End If
End Sub
Update
I see what you mean now. It is the value that is NULL not the control itself.
I did some testing and it turns out that if you use your method it does not work. But change it to this and it will.
<asp:Label runat="server" ID="price" Text='<%# getPrice(getProductInfo(Eval("fieldName"))) %>'></asp:Label>
It seems that the binding of data inside the tag is done after the row or gridview has completed, but the Text property is set right away.