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<asp:TemplateField HeaderText="角色">
<ItemTemplate>
<%#Container.DataItem%>
</ItemTemplate>
</asp:TemplateField>
List<Roles> roles = System.Web.Security.Roles.GetAllRoles();
this.gridview.DataSource=roles;
this.gridview.DataBind();
<asp:GridView ID="GridView1" runat="server">
<Columns>
<asp:TemplateField HeaderText="角色">
<ItemTemplate>
<%# ((Roles)Container.DataItem).RoleName %>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:Button ID="btn" CommandName="del" Text="删除" runat="server" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
<EmptyDataTemplate>
</EmptyDataTemplate>
</asp:GridView>