Try following:
Set your
Control.Enabled property
value according to the function
HttpContext.Current.User.IsInRole("ROLE HERE")
returned value.
<asp:label id="lblCompany" runat="server" text="<% #Eval("CompanyName")%>" enabled="<%# HttpContext.Current.User.IsInRole("ROLE HERE") %>" xmlns:asp="#unknown"></asp:label>
<asp:textbox id="txtAddress" runat="server" text="<%#Eval("Address")%>" xmlns:asp="#unknown">
Enabled='<%# HttpContext.Current.User.IsInRole("ROLE HERE") %>'></asp:textbox>