to: azsoft(Try my best) ( ) 信誉:84 还是不明白,说具体一点好吗?我是初学的,懂得不多,那个udl 文件是干嘛用的啊?我的意思是说:每次运行那个程序时,它就自动链接到carrefour那个数据库里去.只要这样就够了.
1.建一个连接文件 [oledb] ; Everything after this line is an OLE DB initstring Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;PWD=12345;Initial Catalog=NorthWind;Data Source=127.0.0.1 2.设置ADOConnection的ConnectString属性,使其指向这个文件.
还是不明白,说具体一点好吗?我是初学的,懂得不多,那个udl 文件是干嘛用的啊?我的意思是说:每次运行那个程序时,它就自动链接到carrefour那个数据库里去.只要这样就够了.
[oledb]
; Everything after this line is an OLE DB initstring
Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;PWD=12345;Initial Catalog=NorthWind;Data Source=127.0.0.1
2.设置ADOConnection的ConnectString属性,使其指向这个文件.
*****************************
Data.ADOConnection1.Connected := False;
Data.ADOConnection1.ConnectionString := 'Provider=SQLOLEDB.1;' +
'Password=' + Trim(PasswordEdit.Text) +
';' +
'Persist Security Info=False;' +
'User ID=' + Trim(Edit1.Text) + ';' +
'Initial Catalog=RS;' +
'Data Source=' + Trim(Edit2.Text) + ';' ;
Data.ADOConnection1.Connected := True;
showmessage('服务器已经配置完毕,可以使用!');
uses AdoConEdEditConnectionString(ADOConnection1);2. 保存 ADOConnection1.ConnectionString 到 ini文件或写入注册表,以后每次使用时,从文件中读。
用到控件:ADOConnection、ADODataSet、DataSource、DBGridUnit1.dfm
----------------------------------------------------------
object Form1: TForm1
Left = 192
Top = 107
Width = 544
Height = 375
Caption = 'Form1'
Color = clBtnFace
Font.Charset = DEFAULT_CHARSET
Font.Color = clWindowText
Font.Height = -11
Font.Name = 'MS Sans Serif'
Font.Style = []
OldCreateOrder = False
PixelsPerInch = 96
TextHeight = 13
object DBGrid1: TDBGrid
Left = 8
Top = 8
Width = 521
Height = 329
DataSource = DataSource1
TabOrder = 0
TitleFont.Charset = DEFAULT_CHARSET
TitleFont.Color = clWindowText
TitleFont.Height = -11
TitleFont.Name = 'MS Sans Serif'
TitleFont.Style = []
end
object ADOConnection1: TADOConnection
Connected = True
ConnectionString =
'Provider=SQLOLEDB.1;Password=myPassword;Persist Security Info=True' +
';User ID=Sa;Initial Catalog=pubs;Data Source=SAMPSON'
LoginPrompt = False
Provider = 'SQLOLEDB.1'
Left = 168
Top = 232
end
object DataSource1: TDataSource
DataSet = ADODataSet1
Left = 232
Top = 232
end
object ADODataSet1: TADODataSet
Active = True
Connection = ADOConnection1
CursorType = ctStatic
CommandText = 'select * from employee'
Parameters = <>
Left = 200
Top = 232
end
end
-----------------------------------------------------------------------Unit1.pas
-----------------------------------------------------------------------
unit Unit1;interfaceuses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, DB, ADODB, Grids, DBGrids;type
TForm1 = class(TForm)
ADOConnection1: TADOConnection;
DBGrid1: TDBGrid;
DataSource1: TDataSource;
ADODataSet1: TADODataSet;
private
{ Private declarations }
public
{ Public declarations }
end;var
Form1: TForm1;implementation{$R *.dfm}end.
-----------------------------------------------------------------------Project1.dpr
-----------------------------------------------------------------------
program Project1;uses
Forms,
Unit1 in 'Unit1.pas' {Form1};{$R *.res}begin
Application.Initialize;
Application.CreateForm(TForm1, Form1);
Application.Run;
end.
------------------------------------------------------------------------复制粘贴即可调试(已成功通过)