163 lines
3.3 KiB
C#
163 lines
3.3 KiB
C#
using System;
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using System.Data ;
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using System.Data .OleDb ;
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using System.Collections ;
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using System.Windows .Forms ;
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namespace MailManageSystem.RegisterAccount
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{
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/// <summary>
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/// AccountOperate 的摘要说明。
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/// </summary>
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public class AccountOperate
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{
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//定义一个连接数据库的字符串
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string conn="Provider=Microsoft.Jet.OLEDB.4.0;Data Source="+Application.StartupPath+"\\Manage.mdb";
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public AccountOperate()
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{
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//
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// TODO: 在此处添加构造函数逻辑
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//
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}
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/// <summary>
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/// 向数据库中插入数据
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/// </summary>
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/// <param name="insert"></param>
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public void AddDelAccount(string insert)
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{
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OleDbConnection myconn=new OleDbConnection (conn);
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myconn.Open ();
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OleDbCommand cmd=new OleDbCommand(insert,myconn);
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try
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{
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cmd.ExecuteNonQuery ();
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}
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catch(Exception ex)
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{
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MessageBox.Show (ex.ToString ());
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}
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finally
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{
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myconn.Close ();
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}
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}
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/// <summary>
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/// 选中的帐户的相关信息
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/// </summary>
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/// <param name="sql">选择的语句</param>
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/// <returns></returns>
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public string[] AccountFileInfo(string sql)
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{
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string []AccountInfo=new string [5];
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OleDbConnection myconn=new OleDbConnection (conn);
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myconn.Open ();
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try
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{
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OleDbCommand mycmd=new OleDbCommand(sql,myconn);
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OleDbDataReader myread=mycmd.ExecuteReader ();
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while(myread.Read ())
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{
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AccountInfo[0]=myread["UserName"].ToString ();
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AccountInfo[1]=myread["Passw"].ToString ();
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AccountInfo[2]=myread["MailAddress"].ToString ();
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AccountInfo[3]=myread["Smtp"].ToString ();
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AccountInfo[4]=myread["port"].ToString ();
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}
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}
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catch(Exception ex)
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{
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MessageBox.Show (ex.ToString ());
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}
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finally
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{
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myconn.Close ();
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}
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return AccountInfo;
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}
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/// <summary>
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/// 从数据库中读出需要的数据(主要用于显示所有的帐户)
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/// </summary>
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/// <param name="sql">执行的语句</param>
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/// <returns></returns>
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public ArrayList ReadFromDataBase(string sql,string parameter)
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{
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ArrayList array=new ArrayList ();
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OleDbConnection myconn=new OleDbConnection (conn);
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myconn.Open ();
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try
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{
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OleDbCommand mycmd=new OleDbCommand(sql,myconn);
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OleDbDataReader myread=mycmd.ExecuteReader ();
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while(myread.Read ())
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{
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array.Add (myread[parameter]);
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}
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}
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catch(Exception ex)
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{
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MessageBox.Show (ex.ToString ());
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}
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finally
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{
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myconn.Close ();
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}
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return array;
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}
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/// <summary>
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/// 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
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/// </summary>
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/// <param name="sql"></param>
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/// <param name="username"></param>
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/// <returns></returns>
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public bool CheckAccount(string sql,string username)
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{
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// 设置标志位用来标识是否被使用
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bool state=false;
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OleDbConnection myconn=new OleDbConnection (conn);
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myconn.Open ();
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OleDbCommand cmd2=new OleDbCommand(sql,myconn);
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OleDbDataReader myread=cmd2.ExecuteReader ();
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if(username!="")
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{
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try
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{
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while(myread.Read ())
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{
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//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
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if(myread.GetString (0).Trim()==username)
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{
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state=true;
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break;
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}
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}
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}
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catch(Exception E)
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{
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Console.WriteLine (E.ToString ());
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}
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finally
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{
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myread.Close ();
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myconn.Close ();
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}
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}
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return state;
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}
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}
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}
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