Get Distinct value using Group By , Having , Count in DataTable C#, C#

Get Distinct value using Group By , Having , Count in DataTable C#

//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using System.Data;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //Your code goes here
            Console.WriteLine("Hello, world!");
            
            // this is your datatable
DataTable table = new DataTable();
table.Columns.Add("Salesman", typeof(string));
table.Columns.Add("ClientID", typeof(int));

//insert your data
table.Rows.Add("Bob", 1);
table.Rows.Add("Bob", 2);
table.Rows.Add("Bob", 3);
table.Rows.Add("Tom", 4);
table.Rows.Add("Joe", 5);
//table.Rows.Add("Joe", 6);
table.Rows.Add("Tim", 7);
//table.Rows.Add("Tim", 8);

// query with LINQ 
var query = from row in table.AsEnumerable()
            group row by row.Field<string>("Salesman") into sales
            where sales.Count() > 1
            select new
            {
                Name = sales.Key,
                CountOfClients = sales.Count()
            };

// print result
foreach (var salesman in query)
{
    Console.WriteLine("{0}\t{1}", salesman.Name, salesman.CountOfClients);
}
        }
    }
}


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