日期：2011-05-02 15:44:00 来源：本站整理
利用Delphi6的DBExpress组件衔接远程的Mysql数据库[MySQL防范]
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Delphi6新增的DBExpress专门用来对付MySQL,DB2,Interbase,Oracle等数据库,利用时注意将libmysql.dll
拷贝到当前目录或系统目录(98:system,NT:system32)下,并保证您的3306端口与远程服务器是相通的.
源程序:
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, DBXpress, DB, SqlExpr, StdCtrls, ComCtrls, FMTBcd, Grids,
DBGrids, Provider, DBClient, DBLocal, DBLocalS, DBTables;
type
TForm1 = class(TForm)
SQLConnection: TSQLConnection;
StatusBar1: TStatusBar;
Label1: TLabel;
DataSource1: TDataSource;
DBGrid1: TDBGrid;
GroupBox1: TGroupBox;
Label2: TLabel;
Password: TEdit;
User_Name: TEdit;
HostName: TEdit;
Label3: TLabel;
Label4: TLabel;
Button1: TButton;
GroupBox2: TGroupBox;
Label5: TLabel;
ESQL: TEdit;
Label6: TLabel;
Database: TEdit;
ButtonGo: TButton;
SQLClientDataSet: TSQLClientDataSet;
procedure Button1Click(Sender: TObject);
procedure ButtonGoClick(Sender: TObject);
procedure FormClose(Sender: TObject; var Action: TCloseAction);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
begin
with SQLConnection do
begin
Close;
Params.Values['HostName']:=HostName.Text;
Params.Values['UserName']:=User_Name.Text;
Params.Values['Password']:=Password.Text;
Params.Values['Database']:=Database.Text;
try
Connected:=True;
Statusbar1.Panels[0].Text:='Connect OK';
ButtonGo.Enabled:=True;
except
MessageDlg('Connect Error',mtError,[mbyes],0);
end;
end;
end;
procedure TForm1.ButtonGoClick(Sender: TObject);
begin
with SQLClientDataSet do
begin
Close;
CommandText:=ESQL.Text;
Open;
end;
end;
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
SQLConnection.Close;
end;
end.
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