虚位以待(AD)
虚位以待(AD)
首页 > 网络编程 > ASP.NET > ASP.NET数据库操作类实例

ASP.NET数据库操作类实例
类别:ASP.NET   作者:码皇   来源:互联网   点击:

这篇文章主要介绍了ASP NET数据库操作类,结合实例形式分析了asp net基本的数据库增删改查操作封装相关技巧,需要的朋友可以参考下

本文实例讲述了ASP.NET数据库操作类。分享给大家供大家参考,具体如下:

    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;
    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 (conn.State == ConnectionState.Closed) {
    conn.Open();
    }
    SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter();
    SqlCommand selectCommand = new SqlCommand(SelectString, conn);
    selectCommand.CommandType = CommandType.Text;
    mySqlDataAdapter.SelectCommand = selectCommand;
    DataSet myDS = new DataSet();
    mySqlDataAdapter.Fill(myDS);
    return myDS;
    }
    catch (Exception e) {
    strError = "数据检索失败:" + e.Message;
    return null;
    }
    finally {
    if (conn.State != ConnectionState.Closed) {
    conn.Close();
    }
    }
    }
    /// <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 (conn.State == ConnectionState.Closed) {
    conn.Open();
    }
    SqlCommand cmd = new SqlCommand(UDIString, conn);
    cmd.CommandType = CommandType.Text;
    intCount = cmd.ExecuteNonQuery();
    return !(intCount < 1);
    }
    catch (Exception e) {
    strError = "更新数据库失败:" + e.Message;
    return false;
    }
    finally {
    if (conn.State != ConnectionState.Closed) {
    conn.Close();
    }
    }
    }
    }
    }

更多关于asp.net相关内容感兴趣的读者可查看本站专题:《asp.net优化技巧总结》、《asp.net字符串操作技巧汇总》、《asp.net操作XML技巧总结》、《asp.net文件操作技巧汇总》、《asp.net ajax技巧总结专题》及《asp.net缓存操作技巧总结》。

希望本文所述对大家asp.net程序设计有所帮助。

相关热词搜索: ASP NET 数据库 操作类