The rgPagePrev CSS class (as well as all other RadGrid inner elements' CSS classes) works only if the corresponding element is placed inside a container with the RadGrid_SkinName CSS class, for example:
<span class="RadGrid RadGrid_SkinName
<asp:Button ID="Button1" runat="server" CssClass="rgPagePrev" Text=" " />
Note two things:
1. you need to remove the skin's border and background for the wrapper element
2. the Text property of the button must be set to a space. For accessibility reasons, you may want to set the ToolTip property.
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Public Issue Tracking
system and vote to affect the priority of the items.