AccountOperate.cs
资源名称:yjal.rar [点击查看]
上传用户:shjujing
上传日期:2022-07-28
资源大小:11244k
文件大小:3k
源码类别:
Email客户端
开发平台:
Visual C++
- using System;
- using System.Data ;
- using System.Data .OleDb ;
- using System.Collections ;
- using System.Windows .Forms ;
- namespace MailManageSystem.RegisterAccount
- {
- /// <summary>
- /// AccountOperate 的摘要说明。
- /// </summary>
- public class AccountOperate
- {
- //定义一个连接数据库的字符串
- string conn="Provider=Microsoft.Jet.OLEDB.4.0;Data Source="+Application.StartupPath+"\Manage.mdb";
- public AccountOperate()
- {
- //
- // TODO: 在此处添加构造函数逻辑
- //
- }
- /// <summary>
- /// 向数据库中插入数据
- /// </summary>
- /// <param name="insert"></param>
- public void AddDelAccount(string insert)
- {
- OleDbConnection myconn=new OleDbConnection (conn);
- myconn.Open ();
- OleDbCommand cmd=new OleDbCommand(insert,myconn);
- try
- {
- cmd.ExecuteNonQuery ();
- }
- catch(Exception ex)
- {
- MessageBox.Show (ex.ToString ());
- }
- finally
- {
- myconn.Close ();
- }
- }
- /// <summary>
- /// 选中的帐户的相关信息
- /// </summary>
- /// <param name="sql">选择的语句</param>
- /// <returns></returns>
- public string[] AccountFileInfo(string sql)
- {
- string []AccountInfo=new string [5];
- OleDbConnection myconn=new OleDbConnection (conn);
- myconn.Open ();
- try
- {
- OleDbCommand mycmd=new OleDbCommand(sql,myconn);
- OleDbDataReader myread=mycmd.ExecuteReader ();
- while(myread.Read ())
- {
- AccountInfo[0]=myread["UserName"].ToString ();
- AccountInfo[1]=myread["Passw"].ToString ();
- AccountInfo[2]=myread["MailAddress"].ToString ();
- AccountInfo[3]=myread["Smtp"].ToString ();
- AccountInfo[4]=myread["port"].ToString ();
- }
- }
- catch(Exception ex)
- {
- MessageBox.Show (ex.ToString ());
- }
- finally
- {
- myconn.Close ();
- }
- return AccountInfo;
- }
- /// <summary>
- /// 从数据库中读出需要的数据(主要用于显示所有的帐户)
- /// </summary>
- /// <param name="sql">执行的语句</param>
- /// <returns></returns>
- public ArrayList ReadFromDataBase(string sql,string parameter)
- {
- ArrayList array=new ArrayList ();
- OleDbConnection myconn=new OleDbConnection (conn);
- myconn.Open ();
- try
- {
- OleDbCommand mycmd=new OleDbCommand(sql,myconn);
- OleDbDataReader myread=mycmd.ExecuteReader ();
- while(myread.Read ())
- {
- array.Add (myread[parameter]);
- }
- }
- catch(Exception ex)
- {
- MessageBox.Show (ex.ToString ());
- }
- finally
- {
- myconn.Close ();
- }
- return array;
- }
- /// <summary>
- /// 此函数的作用是来判断用户名是否已经被使用,调用的方法是通过Sql语句,以及一个字符串变量
- /// </summary>
- /// <param name="sql"></param>
- /// <param name="username"></param>
- /// <returns></returns>
- public bool CheckAccount(string sql,string username)
- {
- // 设置标志位用来标识是否被使用
- bool state=false;
- OleDbConnection myconn=new OleDbConnection (conn);
- myconn.Open ();
- OleDbCommand cmd2=new OleDbCommand(sql,myconn);
- OleDbDataReader myread=cmd2.ExecuteReader ();
- if(username!="")
- {
- try
- {
- while(myread.Read ())
- {
- //读取用户名来和用户输入的注册名匹配,如果匹配设置标志位为真
- if(myread.GetString (0).Trim()==username)
- {
- state=true;
- break;
- }
- }
- }
- catch(Exception E)
- {
- Console.WriteLine (E.ToString ());
- }
- finally
- {
- myread.Close ();
- myconn.Close ();
- }
- }
- return state;
- }
- }
- }