/*
* Author: joe
* Create date: 2014.1.17
13:59
* Description: 数据库助手类
*/
using System;
using
System.Collections.Generic;
using System.Linq;
using System.Text;
using
System.Configuration;
using System.Data.SqlClient;
using System.Data;
namespace DAL
{
public class
SQLHelper
{
string connstr =
ConfigurationManager.ConnectionStrings["Constr"].ConnectionString;
public int ExecuteNonQuery(string sql,CommandType ct, params SqlParameter[]
parameters)
{
using
(SqlConnection conn = new
SqlConnection(connstr))
{
conn.Open();
using (SqlCommand cmd =
conn.CreateCommand())
{
cmd.CommandText =
sql;
cmd.CommandType =
ct;
foreach (SqlParameter parameter in
parameters)
{
cmd.Parameters.Add(parameter);
}
return
cmd.ExecuteNonQuery();
}
}
}
public object
ExecuteScalar(string sql,CommandType ct,params SqlParameter[]
parameters)
{
using
(SqlConnection conn = new
SqlConnection(connstr))
{
conn.Open();
using (SqlCommand cmd =
conn.CreateCommand())
{
cmd.CommandText =
sql;
cmd.CommandType =
ct;
foreach (SqlParameter parameter in
parameters)
{
cmd.Parameters.Add(parameter);
}
return
cmd.ExecuteScalar();
}
}
}
public DataTable
ExecuteDataTable(string sql,CommandType ct, params SqlParameter[]
parameters)
{
using
(SqlConnection conn = new
SqlConnection(connstr))
{
conn.Open();
using (SqlCommand cmd =
conn.CreateCommand())
{
cmd.CommandText =
sql;
cmd.CommandType =
ct;
foreach (SqlParameter parameter in
parameters)
{
cmd.Parameters.Add(parameter);
}
DataSet ds = new
DataSet();
SqlDataAdapter adapter = new
SqlDataAdapter(cmd);
adapter.Fill(ds);
return
ds.Tables[0];
}
}
}
}
}