ASP.NET WebForm: <asp:DataGrid OnItemDataBound="OnDataBound" ..etc..> <ItemTemplate> <asp:Textbox id="foo"/> </ItemTemplate> </asp:DataGrid> Codebehind: protected void OnDataBound( object sender, DataGridItemEventArgs e ) { Textbox foo = e.Item.FindControl( "foo" ); // <--- declaration of variable foo is flagged as hiding the field of the same name } ReSharper does not recognize that foo only exists in the template section of the control, and that there is no page.foo field. It will flag the line above as a warning and also incorrectly provide intellisense for a field named foo at the page class level, even though it doesn't really exist.