using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace OperateExcel
{
public static class SqlHelper
{
public static readonly string conStr = ConfigurationManager.ConnectionStrings["sqlCon"].ConnectionString;
public static int ExecuteNoQuery(string sql, CommandType cmdType, params SqlParameter[] pms)
{
using (SqlConnection con = new SqlConnection(conStr))
{
using (SqlCommand cmd = new SqlCommand(sql, con))
{
cmd.CommandType = cmdType;
if (pms != null)
{
cmd.Parameters.AddRange(pms);
}
con.Open();
return cmd.ExecuteNonQuery();
}
}
}
public static object ExecuteScalar(string sql, CommandType cmdType, params SqlParameter[] pms)
{
using (SqlConnection con = new SqlConnection(conStr))
{
using (SqlCommand cmd = new SqlCommand(sql, con))
{
cmd.CommandType = cmdType;
if (pms != null)
{
cmd.Parameters.AddRange(pms);
}
con.Open();
return cmd.ExecuteScalar();
}
}
}
public static SqlDataReader ExecuteReader(string sql, CommandType cmdType, params SqlParameter[] pms)
{
SqlConnection con = new SqlConnection(conStr);
try
{
using (SqlCommand cmd = new SqlCommand(sql, con))
{
cmd.CommandType = cmdType;
if (pms != null)
{
cmd.Parameters.AddRange(pms);
}
con.Open();
SqlDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
return reader;
}
}
catch (Exception)
{
con.Dispose();
throw;
}
}
public static DataTable ExecuteDataTable(string sql, CommandType cmdType, params SqlParameter[] pms)
{
using (SqlDataAdapter sda = new SqlDataAdapter(sql, conStr))
{
DataTable dt = new DataTable();
sda.SelectCommand.CommandType = cmdType;
if (pms != null)
{
sda.SelectCommand.Parameters.AddRange(pms);
}
sda.Fill(dt);
return dt;
}
}
}
}