Get online users list in asp.net

In this post I will explain how to get the list of online users in asp.net.

OnlineUserList.aspx

<asp:GridView ID="gvOnlineUserList" runat="server" Font-Bold="True" AutoGenerateColumns="False">
        <Columns>      
            <asp:BoundField DataField="UserName" HeaderText="User Name" />
            <asp:CheckBoxField DataField="IsOnline" HeaderText="Is Online" />    
            <asp:BoundField DataField="IsApproved" HeaderText="Is Approved" />
            <asp:BoundField DataField="Email" HeaderText="Email" />
            <asp:BoundField DataField="CreationDate" HeaderText="Creation Date" />
            <asp:BoundField DataField="LastActivityDate" HeaderText="Last Activity Time" />
            <asp:BoundField DataField="LastLockoutDate" HeaderText="Last Lockout Date" />
        </Columns>
        <RowStyle BackColor="#EFF3FB" />
        <EditRowStyle BackColor="#2461BF" />        
        <SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
        <EmptyDataTemplate>          
            No User Online      
        </EmptyDataTemplate>
    </asp:GridView>

OnlineUserList.aspx.cs

public MembershipUserCollection OnlineUsers = new MembershipUserCollection();
public MembershipUserCollection AllUsers = new MembershipUserCollection();
     
protected void Page_Load(object sender, EventArgs e)
{
            if (!Page.IsPostBack)
            {
                this.BindOnlineUsers();
            }
}


private void BindOnlineUsers()
{
            AllUsers = Membership.GetAllUsers();
            foreach (MembershipUser user in AllUsers)
            {
                if (user.IsOnline)
                {
                    OnlineUsers.Add(user);
                }
            }
             gvOnlineUserList.DataSource = OnlineUsers;
             gvOnlineUserList.DataBind();
}