今天小编给大家精心推荐个(#)数据库操作类教程，一起来看看过程究竟如何进行吧！喜欢还请点个赞哦~
using System;
using ;
using ;
using System.Web;
using ;
using ;
using .WebControls;
using .WebControls.WebParts;
using .HtmlControls;
using .SqlClient;
namespace Mysqlserver
{
/// summary
/// SqlServerDataBase 的摘要说明
/// /summary
public class SqlServerDataBase
{
private string strError = null;
private int intCount = 0;
public SqlServerDataBase()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
/// summary
/// 公开方法DBConn，返回数据库连接
/// /summary
/// returns/returns
public SqlConnection DBconn()
{
string strConn = "Server=(local);Database=GlobalMeetings;Uid=sa;pwd=";
try
{
return new SqlConnection(strConn);
}
catch (Exception)
{
return null;
}
}
/// summary
/// 公开属性ErrorMessage，返回错误信息
/// /summary
public string ErrorMessage
{
get
{
return strError;
}
}
/// summary
/// 根据查询语句从数据库检索数据
/// /summary
/// param name="strSelect"查询语句/param
/// param name="SqlConn"数据库连接/param
/// returns有数据则返回DataSet对象，否则返回null/returns
public DataSet Select(string SelectString, SqlConnection sqlConn)
{
strError = "";
SqlConnection conn;
if (sqlConn == null)
{
conn = DBconn();
}
else
{
conn = sqlConn;
}
try
{
//若数据库连接的当前状态是关闭的，则打开连接
if ( == )
{
();
}
SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter();
SqlCommand selectCommand = new SqlCommand(SelectString, conn);
= ;
= selectCommand;
DataSet myDS = new DataSet();
();
return myDS;
}
catch (Exception e)
{
strError = "数据检索失败：" + ;
return null;
}
finally
{
if ( != )
{
();
}
}
}
/// summary
/// 更新数据库
/// /summary
/// param name="UpdateString"Update Sql语句/param
/// param name="SqlConn"数据库连接/param
/// returns更新成功返回true/returns
public bool Update(string UpdateString, SqlConnection SqlConn)
{
return udiDataBase(UpdateString, SqlConn);
}
/// summary
/// 从数据库中删除数据
/// /summary
/// param name="DeleteString"Delete Sql语句/param
/// param name="SqlConn"数据库连接/param
/// returns删除成功返回true/returns
public bool Delete(string DeleteString, SqlConnection SqlConn)
{
return udiDataBase(DeleteString, SqlConn);
}
/// summary
/// 把数据插入数据库
/// /summary
/// param name="InsertString"Insert Sql语句/param
/// param name="SqlConn"数据库连接/param
/// returns插入成功返回true/returns
public bool Insert(string InsertString, SqlConnection SqlConn)
{
return udiDataBase(InsertString, SqlConn);
}
/// summary
/// 根据Sql语句更新数据库
/// /summary
/// param name="UDIString"更新语句/param
/// param name="SqlConn"数据库连接/param
/// returns更新成功则返回true/returns
public bool udiDataBase(string UDIString, SqlConnection SqlConn)
{
strError = "";
SqlConnection conn;
if (SqlConn == null)
{
conn = DBconn();
}
else
{
conn = SqlConn;
}
try
{
if ( == )
{
();
}
SqlCommand cmd = new SqlCommand(UDIString, conn);
= ;
intCount = ();
return !(intCount 1);
}
catch (Exception e)
{
strError = "更新数据库失败：" + ;
return false;
}
finally
{
if ( != )
{
();
}
}
}
}
}
-----------------------------
两种调用方法
1、string strUserPsw = ();
string UserPassword= .FormsAuthentication.HashPasswordForStoringInConfigFile(strUserPsw, "MD5");//md5加密
SqlServerDataBase obj = new SqlServerDataBase();
("insert into asUserInfo (UserName,UserPassword,Question,Answer,CreateTime) values('" + () + "','" + UserPassword + "','" + () + "','" + () + "','" + () + "' )", null);
2、 private bool IsUsernameExist(string strUsername)
{
bool bRet = true;
SqlServerDataBase db = new SqlServerDataBase();
DataSet ds = ("select * from asUserInfo where UserName = '" + strUsername + "'", null);
if (ds == null || == 0 || == 0)
{
bRet = false;
}
else
{
bRet = true;
}
return bRet;
}
