unit Unit1;interfaceuses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, Grids, DBGrids, DB, ADODB;type
TForm1 = class(TForm)
Button1: TButton;
DataSource1: TDataSource;
DBGrid1: TDBGrid;
ADOTable1: TADOTable; procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;var
Form1: TForm1;implementation{$R *.dfm}procedure TForm1.Button1Click(Sender: TObject);
var
hyd :tform ;
hyd1:tadotable;
k1: string;
k2:string;
k3:string;
begin
hyd:=tform.Create(self);
hyd.Show;
tadotable.Create(self); datasource1.DataSet:=hyd1;k3:='MaxBufferSize=2048;MaxScanRows=8;PageTimeout=5;SafeTransactions=0;Threads=3;UID=admin;UserCommitSync=Yes;' ;
hyd1.ConnectionString:='E:\Program Files\Common Files\System\Ole DB\Data Links\DBDEMOS.udl';
hyd1.TableName:='items';
hyd1.Active:=true;
end;end.
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, Grids, DBGrids, DB, ADODB;type
TForm1 = class(TForm)
Button1: TButton;
DataSource1: TDataSource;
DBGrid1: TDBGrid;
ADOTable1: TADOTable; procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;var
Form1: TForm1;implementation{$R *.dfm}procedure TForm1.Button1Click(Sender: TObject);
var
hyd :tform ;
hyd1:tadotable;
k1: string;
k2:string;
k3:string;
begin
hyd:=tform.Create(self);
hyd.Show;
tadotable.Create(self); datasource1.DataSet:=hyd1;k3:='MaxBufferSize=2048;MaxScanRows=8;PageTimeout=5;SafeTransactions=0;Threads=3;UID=admin;UserCommitSync=Yes;' ;
hyd1.ConnectionString:='E:\Program Files\Common Files\System\Ole DB\Data Links\DBDEMOS.udl';
hyd1.TableName:='items';
hyd1.Active:=true;
end;end.
解决方案 »
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改成
hyd1:=tadotable.Create(self);
这是什么原因啊?
我看你定义了好多变量都没用,把它们删掉。
现在窗口里面静态定义一个table,建立连接,测试一下数据源,如果成功
把串拷贝下来,粘贴到hyd1.ConnectionString,