Dynamically assign the ImageUrl property of an image, using data binding?

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Put this code in .aspx file
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<asp:TemplateField HeaderText="|| Status ||">
                        <ItemTemplate>
                            <asp:Image ID="imgGreenAct" ImageUrl='<%# GetImage(Convert.ToString(DataBinder.Eval(Container.DataItem, "Status")))%>' AlternateText='<%# Bind("Status") %>' runat="server" />                           
                        </ItemTemplate>
</asp:TemplateField>
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Put this code in  .aspx.cs file
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public string GetImage(string status) { if (status=="Active")

        return "~/images/green_acti.png";

    else

        return "~/images/red_acti.png";

}

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