Type 'System.Web.UI.WebControls.GridView' does not have a public property named 'SortedAscendingCellStyle'

Parser Error

Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.  Parser Error Message: Type 'System.Web.UI.WebControls.GridView' does not have a public property named 'SortedAscendingCellStyle'. Source Error: 

Line 223:        <RowStyle HorizontalAlign="Center" Font-Size="12px" />
Line 224:        <SelectedRowStyle BackColor="#000099" Font-Bold="True" ForeColor="White" />
Line 225:        <SortedAscendingCellStyle BackColor="#F1F1F1" />
Line 226:        <SortedAscendingHeaderStyle BackColor="#808080" />
Line 227:        <SortedDescendingCellStyle BackColor="#CAC9C9" />

Source File: /Dept_Commerce.aspx    Line: 225 

Version Information: Microsoft .NET Framework Version:2.0.50727.4984; ASP.NET Version:2.0.50727.4971