People and Groups : Get All People in c#

http://sp2016:12345/sites/test/_layouts/15/people.aspx?MembershipGroupId=0

using Microsoft.SharePoint.Client;

using System;

using System.Collections.Generic;

using System.Data;

using System.Linq;

namespace SampleConsoleApp

{

    class Program

    {

        public static void Main(string[] args)

        {

            DataTable dtAllUsr = geSiteUserInfoListDetails("http://test.site.com/hr/");

        }

        public static DataTable geSiteUserInfoListDetails(string siteUrl)

        {

            DataTable dt = new DataTable();

            dt.Columns.Add("Sno", typeof(string));

            dt.Columns.Add("Title", typeof(string));

            dt.Columns.Add("FullLoginName", typeof(string));

            dt.Columns.Add("LoginName", typeof(string));

            dt.Columns.Add("EMail", typeof(string));

            dt.Columns.Add("MobilePhone", typeof(string));

            dt.Columns.Add("IsSiteAdmin", typeof(string));

            dt.Columns.Add("UserInfoHidden", typeof(string));

            dt.Columns.Add("Department", typeof(string));

            dt.Columns.Add("JobTitle", typeof(string));

            dt.Columns.Add("FirstName", typeof(string));

            dt.Columns.Add("LastName", typeof(string));

            dt.Columns.Add("WorkPhone", typeof(string));

            dt.Columns.Add("Created", typeof(string));

            dt.Columns.Add("Modified", typeof(string));

            dt.Columns.Add("Deleted", typeof(string));

            dt.Columns.Add("LastModified", typeof(string));

            dt.Columns.Add("CreatedDate", typeof(string));

            dt.Columns.Add("IsActive", typeof(string));

            DataRow dr;

            ClientContext clientContext = new ClientContext(siteUrl);

            Web site = clientContext.Web;

            clientContext.Load(site);

            List l = site.SiteUserInfoList;

            clientContext.Load(l);

            clientContext.ExecuteQuery();

            CamlQuery query = new CamlQuery();

            query.ViewXml = @"<View><Query><Where>" +

                            "<IsNotNull><FieldRef Name='Title'/><Value Type='Text>" +

                            "</IsNotNull></Where></Query></View>";

            ListItemCollection items = l.GetItems(query);

            clientContext.Load(items);

            clientContext.ExecuteQuery();

            int count = 0;

            foreach (ListItem item in items)

            {

                count++;

                dr = dt.NewRow();

                dr["Sno"] = count.ToString();

                dr["Title"] = Convert.ToString(item.FieldValues["Title"]);

                dr["FullLoginName"] = Convert.ToString(item.FieldValues["Name"]);

                dr["LoginName"] = Convert.ToString(item.FieldValues["UserName"]);

                dr["EMail"] = Convert.ToString(item.FieldValues["EMail"]);

                dr["MobilePhone"] = Convert.ToString(item.FieldValues["MobilePhone"]);

                dr["IsSiteAdmin"] = Convert.ToString(item.FieldValues["IsSiteAdmin"]);

                dr["UserInfoHidden"] = Convert.ToString(item.FieldValues["UserInfoHidden"]);

                dr["Department"] = Convert.ToString(item.FieldValues["Department"]);

                dr["JobTitle"] = Convert.ToString(item.FieldValues["JobTitle"]);

                dr["FirstName"] = Convert.ToString(item.FieldValues["FirstName"]);

                dr["LastName"] = Convert.ToString(item.FieldValues["LastName"]);

                dr["WorkPhone"] = Convert.ToString(item.FieldValues["WorkPhone"]);

                dr["Created"] = Convert.ToString(item.FieldValues["Created"]);

                dr["Modified"] = Convert.ToString(item.FieldValues["Modified"]);

                dr["Deleted"] = Convert.ToString(item.FieldValues["Deleted"]);

                dr["LastModified"] = Convert.ToString(item.FieldValues["Last_x0020_Modified"]);

                dr["CreatedDate"] = Convert.ToString(item.FieldValues["Created_x0020_Date"]);

                dr["IsActive"] = Convert.ToString(item.FieldValues["IsActive"]);

                dt.Rows.Add(dr);

            }

            return dt;

        }

    }

 

}