Cust_List.aspx

<%@ Page Title="" Language="C#" MasterPageFile="~/HomeG.master" AutoEventWireup="true" CodeFile="Cust_List.aspx.cs" Inherits="Cust_List" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="Mobile" DataSourceID="SqlDataSource1">
        <Columns>
            <asp:BoundField DataField="Name" HeaderText="Name" SortExpression="Name" />
            <asp:BoundField DataField="Email" HeaderText="Email" SortExpression="Email" />
            <asp:BoundField DataField="Mobile" HeaderText="Mobile" ReadOnly="True" SortExpression="Mobile" />
            <asp:BoundField DataField="Address" HeaderText="Address" SortExpression="Address" />
            <asp:BoundField DataField="Password" HeaderText="Password" SortExpression="Password" />
            <asp:BoundField DataField="Preference" HeaderText="Preference" SortExpression="Preference" />
        </Columns>
    </asp:GridView>
    <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:DotNetConnectionString %>" SelectCommand="SELECT * FROM [reg]"></asp:SqlDataSource>
</asp:Content>
<asp:Content ID="Content3" ContentPlaceHolderID="ContentPlaceHolder2" Runat="Server">
</asp:Content>