e-mail-client-programs/src/code/MailManageSystem/RegisterAccount/AccountOperate.cs

using System;
using System.Data ;
using System.Data .OleDb ;
using System.Collections ;
using System.Windows .Forms ;
namespace MailManageSystem.RegisterAccount
{
	/// <summary>
	/// AccountOperate <20><>ժҪ˵<D2AA><CBB5><EFBFBD><EFBFBD>
	/// </summary>
	public class AccountOperate
	{
		//<2F><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD>
		string conn="Provider=Microsoft.Jet.OLEDB.4.0;Data Source="+Application.StartupPath+"\\Manage.mdb";

		public AccountOperate()
		{
			//
			// TODO: <20>ڴ˴<DAB4><CBB4><EFBFBD><EFBFBD>ӹ<EFBFBD><D3B9>캯<EFBFBD><ECBAAF><EFBFBD>߼<EFBFBD>
			//
		}

		/// <summary>
		/// <20><><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF>в<EFBFBD><D0B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		/// </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>
		/// ѡ<>е<EFBFBD><D0B5>ʻ<EFBFBD><CABB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ
		/// </summary>
		/// <param name="sql">ѡ<><D1A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></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>
		/// <20><><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><DDBF>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(<28><>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><CABE><EFBFBD>е<EFBFBD><D0B5>ʻ<EFBFBD>)
		/// </summary>
		/// <param name="sql">ִ<>е<EFBFBD><D0B5><EFBFBD><EFBFBD><EFBFBD></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>
		/// <20>˺<EFBFBD><CBBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><D0B6>û<EFBFBD><C3BB><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7>Ѿ<EFBFBD><D1BE><EFBFBD>ʹ<EFBFBD>ã<EFBFBD><C3A3><EFBFBD><EFBFBD>õķ<C3B5><C4B7><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8>Sql<71><6C><EFBFBD>䣬<EFBFBD>Լ<EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		/// </summary>
		/// <param name="sql"></param>
		/// <param name="username"></param>
		/// <returns></returns>
		
		public bool CheckAccount(string sql,string username)
		{
			// <20><><EFBFBD>ñ<EFBFBD>־λ<D6BE><CEBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʶ<EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD>ʹ<EFBFBD><CAB9>
			
			
			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 ())
					{
						//<2F><>ȡ<EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ע<EFBFBD><D7A2><EFBFBD><EFBFBD>ƥ<EFBFBD><C6A5>,<2C><><EFBFBD><EFBFBD>ƥ<EFBFBD><C6A5><EFBFBD><EFBFBD><EFBFBD>ñ<EFBFBD>־λΪ<CEBB><CEAA>
						if(myread.GetString (0).Trim()==username)
						{
							state=true;
							break;
						}
		
					}
				}
				catch(Exception E)
				{
					Console.WriteLine (E.ToString ());
				}
				finally
				{
					myread.Close ();
					myconn.Close ();
				}
			}	
			return state;
		}
	}
}