or
<Scrolling AllowScroll="True" UseStaticHeaders="True" SaveScrollPosition="True" />
header remains expanded to full width but content is tightening to minimum width, just to fit data (see pic 1)<grid:RadGrid ID="Grid" runat="server" Height="99.5%" ShowStatusBar="True" AllowSorting="True" AllowAutomaticUpdates="True" AutoGenerateColumns="False" AllowPaging="true" PageSize="20" GridLines="Both"> <MasterTableView DataKeyNames="id" EditMode="InPlace" Width="100%" /> <ClientSettings> <Scrolling AllowScroll="True" UseStaticHeaders="True" SaveScrollPosition="True" /> <ClientEvents /> </ClientSettings> </grid:RadGrid>