using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;

namespace WindowsFormsApp5
{
    public static class DataTableHelper
    {
        public static DataTable ToDataTable<T>(List<T> items)
        {
            var dataTable = new DataTable(typeof(T).Name);

            // Get all properties of the class
            PropertyInfo[] properties = typeof(T).GetProperties(BindingFlags.Public | BindingFlags.Instance);

            // Create DataTable columns based on properties
            foreach (var prop in properties)
            {
                dataTable.Columns.Add(prop.Name, Nullable.GetUnderlyingType(prop.PropertyType) ?? prop.PropertyType);
            }

            // Add rows to DataTable
            foreach (var item in items)
            {
                var values = new object[properties.Length];
                for (int i = 0; i < properties.Length; i++)
                {
                    values[i] = properties[i].GetValue(item, null);
                }
                dataTable.Rows.Add(values);
            }

            return dataTable;
        }
    }
}