sqlhelper

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

namespace DAL
{
    using System.Configuration;
    using System.Data;
    using System.Data.SqlClient;
     class SQLhelper
    {
         static readonly string Connstr = ConfigurationManager.ConnectionStrings["connstr"].ConnectionString;

         public static DataTable ExecuteTable(string sql, CommandType cmdtype, params SqlParameter[] ps)
         {
             SqlDataAdapter da = new SqlDataAdapter(sql, Connstr);
             da.SelectCommand.Parameters.AddRange(ps);
             da.SelectCommand.CommandType = cmdtype;
             DataTable dt = new DataTable();
             da.Fill(dt);
             return dt;
         }

         public static int ExecNonquery(string sql, CommandType cmdtype, params SqlParameter[] ps)
         {
             try
             {
                 using (SqlConnection conn = new SqlConnection(Connstr))
                 {
                     conn.Open();
                     SqlCommand cmd = new SqlCommand(sql, conn);
                     cmd.CommandType = cmdtype;
                     cmd.Parameters.AddRange(ps);
                     return cmd.ExecuteNonQuery();
                 }
             }
             catch (Exception ex)
             {
                 throw new Exception(ex.Message);
             }
         }
    }
}