向大家请教一下,各位平时在做数据库访问时,是直接用ADO.NET提供的几个类来访问数据库吗?还是有借用哪些第三方控件来访问数据库呢?到底有哪些第三方控件可以来做数据库访问呢,用这些第三方控件有什么好处呢?等待各位的发言.
解决方案 »
- datatable怎么转换为list<string,string>类型
- 如何理解web service穿越防火墙?(顶给分)
- 我需要一个公共语言类型库(取服务器时间)
- SelectCommand如何調用存儲過程
- arraylist的问题,急,再线等
- 如何在C#中获取系统时间
- 谁用InstallShield 11.5做过C#系统的安装程序啊
- ADO.Net:使用windows身份验证sql连接字符串如何写?
- C#中如何实现延时若干秒?
- 高分求救。好不容易从网上下载了VS。net 在安装CD3时总是出现错误?各位安装时出现没有?
- 在C# FORM背景图片拉伸
- 请问查询分析器显示结果的控件是什么控件
可以参考www.cnblogs.com/mail-ricklee
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
namespace HotelManage.DAL
{
public static class DBHelper
{ private static SqlConnection connection;
public static SqlConnection Connection
{
get
{
string connectionString = "Data Source=.;Initial Catalog=HotelManage;Integrated Security=True";
if (connection == null)
{
connection = new SqlConnection(connectionString);
connection.Open();
}
else if (connection.State == System.Data.ConnectionState.Closed)
{
connection.Open();
}
else if (connection.State == System.Data.ConnectionState.Broken)
{
connection.Close();
connection.Open();
}
return connection;
}
} public static int ExecuteCommand(params SqlParameter[] values)
{
SqlCommand cmd = new SqlCommand();
cmd.Connection = Connection;
cmd.CommandText = "Pro_UpdateBooksCatagory";
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddRange(values);
int result = cmd.ExecuteNonQuery();
return result;
} public static int ExecuteCommand(string safeSql)
{
SqlCommand cmd = new SqlCommand(safeSql, Connection);
int result = cmd.ExecuteNonQuery();
return result;
} public static int ExecuteCommand(string sql, params SqlParameter[] values)
{
SqlCommand cmd = new SqlCommand(sql, Connection);
cmd.Parameters.AddRange(values);
return cmd.ExecuteNonQuery();
} public static int GetScalar(string safeSql)
{
SqlCommand cmd = new SqlCommand(safeSql, Connection);
int result = Convert.ToInt32(cmd.ExecuteScalar());
return result;
} public static int GetScalar(params SqlParameter[] values)
{
SqlCommand cmd = new SqlCommand();
cmd.Connection = Connection;
cmd.CommandText = "Pro_InsertOrder";
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddRange(values);
int result = Convert.ToInt32(cmd.ExecuteScalar());
return result;
} public static int GetScalar(string sql, params SqlParameter[] values)
{
SqlCommand cmd = new SqlCommand(sql, Connection);
cmd.Parameters.AddRange(values);
int result = Convert.ToInt32(cmd.ExecuteScalar());
return result;
} public static SqlDataReader GetReader(string safeSql)
{
SqlCommand cmd = new SqlCommand(safeSql, Connection);
SqlDataReader reader = cmd.ExecuteReader();
return reader;
} public static SqlDataReader GetReader(string sql, params SqlParameter[] values)
{
SqlCommand cmd = new SqlCommand(sql, Connection);
cmd.Parameters.AddRange(values);
SqlDataReader reader = cmd.ExecuteReader();
return reader;
} public static DataTable GetDataSet(string safeSql)
{
DataSet ds = new DataSet();
SqlCommand cmd = new SqlCommand(safeSql, Connection);
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(ds);
return ds.Tables[0];
} public static DataTable GetDataSet(string sql, params SqlParameter[] values)
{
DataSet ds = new DataSet();
SqlCommand cmd = new SqlCommand(sql, Connection);
cmd.Parameters.AddRange(values);
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(ds);
return ds.Tables[0];
} }
}
用空上类