DBExpress组件连接远程Mysql数据库

来源:岁月联盟 编辑:exp 时间:2009-05-01

Delphi6新增的DBExpress专门用来对付Mysql,DB2,Interbase,Oracle等数据库,使用时注意将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.

图片内容