SQL SERVER数据操作类代码
跟大家分享个SQL Server数据操作类,主要是操作数据库有关。请做适当修改
代码如下:using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
///
/// dataOperate 的摘要说明 爱智旮旯
///
public class dataOperate
{
public dataOperate()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
///
/// 创建数据库连接方法
///
///
public static SqlConnection createCon()
{
SqlConnection con = new SqlConnection("server=.;database=db_message;uid=sa;pwd=;");
return con;
}
///
/// 执行SQL语句方法包括删除,插入,更新
///
/// 需要执行的SQL语句
///
public static bool execSql(string sql)
{
//创建数据库连接
SqlConnection con = createCon();
//打开数据库连接
con.Open();
//创建SqlCommand对象
SqlCommand com = new SqlCommand(sql, con);
//判断SQL语句是否执行成功
if (com.ExecuteNonQuery() > 0)
{
return true;
}
else
{
return false;
}
}
///
/// 查询数据方法,并返回一个DataSet对象
///
/// 执行的SQL语句
///
public static DataSet getRows(string sql)
{
//创建DataSet对象
DataSet ds;
//创建数据库连接
SqlConnection con = createCon();
//打开数据库连接
con.Open();
//创建SqlDataAdapter对象
SqlDataAdapter sda = new SqlDataAdapter(sql, con);
//实例DataSet对象
ds = new DataSet();
//填充DataSet对象
sda.Fill(ds);
//关闭数据库连接
con.Close();
return ds;
}
///
/// 查询数据是否存在的方法
///
/// 需要执行的SQL语句
///
public static bool isName(string sql)
{
//创建数据库连接
SqlConnection con = createCon();
//打开数据库连接
con.Open();
//创建SqlCommand对象
SqlCommand com = new SqlCommand(sql, con);
//判断数据是否存在并返回相应的布尔值
if (Convert.ToInt32(com.ExecuteScalar()) > 0)
{
return true;
}
else
{
return false;
}
}
///
/// 返回需要统计数据的结果
///
/// 需要查询的SQL语句
///
public static int countData(string sql)
{
//创建数据库连接
SqlConnection con = createCon();
//打开数据库连接
con.Open();
//创建SqlCommand对象
SqlCommand com = new SqlCommand(sql, con);
//返回查询的结果
return Convert.ToInt32(com.ExecuteScalar());
}
///
/// 实现用户登录方法,该方法可以防止SQL注入式攻击
///
/// 用来执行的SQL语句
/// 用户登录名
/// 用户密码
///
public static bool enter(string sql, string name, string pass)
{
//创建数据库连接
SqlConnection con = createCon();
//打开数据库连接
con.Open();
//创建SqlCommand对象
SqlCommand com = new SqlCommand(sql, con);
//设置参数的类型
com.Parameters.Add(new SqlParameter("@name", SqlDbType.VarChar, 20));
//设置参数值
com.Parameters["@name"].Value = name;
com.Parameters.Add(new SqlParameter("@pass", SqlDbType.VarChar, 20));
com.Parameters["@pass"].Value = pass;
//判断是否执行成功
if (Convert.ToInt32(com.ExecuteScalar()) > 0)
{
return true;
}
else
{
return false;
}
}
///
/// 查询数据方法,该方法返回一个SqlDataReader对象
///
/// 执行SQL语句的方法
///
public static SqlDataReader getRow(string sql)
{
//创建数据库连接
SqlConnection con = createCon();
//打开数据库连接
con.Open();
//创建SqlCommand对象
SqlCommand com = new SqlCommand(sql, con);
//获取ExecuteReader返回的SqlDataReader对象
SqlDataReader sdr = com.ExecuteReader();
return sdr;
}
///
/// 设置时间的显示样式
///
/// 表示需要显示的时间
///
public static string strDate(DateTime str)
{
//设置时间的显示样式
return str.ToLongDateString() + str.Hour + "小时" + str.Minute + "分" + str.Second + "秒";
}
///
/// 过滤字符方法
///
/// 需要过滤的字符串
///
public static string filtrateHtml(string str)
{
str = str.Trim();
str = str.Replace("'", """);
str = str.Replace("str = str.Replace(">", ">");
str = str.Replace(" ", " ");
str = str.Replace("\n", "
");
return str;
}
///
/// 恢复字符串
///
/// 需要恢复的字符串
///
public static string resumeHtml(string str)
{
str = str.Trim();
str = str.Replace(""", "'");
str = str.Replace("str = str.Replace(">", ">");
str = str.Replace(" ", " ");
str = str.Replace("
", "\n");
return str;
}
}

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