Bind only 25 characters to the Label Text in Gridview control

First use template field rather than bound filed in Gridview, and bind using

 <ItemTemplate>

  <asp:Label ID="lblName" runat="server" 

Text=' <%# Eval("NAME").ToString().Length > 25 ? Eval("NAME").ToString().Substring(0, 23)+"..": Eval("NAME")%>'>

</asp:Label>

 </ItemTemplate>