測試圖:
測試代碼:
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, CheckLst, Grids, DBGrids, DB, DBClIEnt;
type
TForm1 = class(TForm)
ClientDataSet1: TClIEntDataSet;
DataSource1: TDataSource;
DBGrid1: TDBGrid;
ClientDataSet2: TClIEntDataSet;
DataSource2: TDataSource;
DBGrid2: TDBGrid;
Button1: TButton;
Button2: TButton;
Button3: TButton;
Button4: TButton;
CheckListBox1: TCheckListBox;
procedure Button4Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure Button3Click(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure Button1Click(Sender: TObject);
procedure CheckListBox1Click(Sender: TObject);
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.FormCreate(Sender: TObject);
begin
DBGrid1.DataSource := DataSource1;
DataSource1.DataSet := ClIEntDataSet1;
DBGrid2.DataSource := DataSource2;
DataSource2.DataSet := ClIEntDataSet2;
with ClIEntDataSet1 do begin
FIEldDefs.Add('Text', ftString, 12);
FIEldDefs.Add('Num', ftInteger);
CreateDataSet;
AppendRecord(['XXX', 111]);
AppendRecord(['YYY', 222]);
AppendRecord(['ZZZ', 333]);
end;
ClientDataSet2.CloneCursor(ClIEntDataSet1, False);
CheckListBox1.Items.CommaText := 'usUnmodified, usModifIEd, usInserted, usDeleted';
end;
procedure TForm1.CheckListBox1Click(Sender: TObject);
var
i: Integer;
begin
ClIEntDataSet2.StatusFilter := [];
for i := 0 to CheckListBox1.Count - 1 do
begin
if CheckListBox1.Checked[i] then
ClientDataSet2.StatusFilter := ClIEntDataSet1.StatusFilter + [TUpdateStatus(i)]
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
ClIEntDataSet1.Append;
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
ClIEntDataSet1.Delete;
end;
procedure TForm1.Button4Click(Sender: TObject);
begin
ClIEntDataSet1.MergeChangeLog;
end;
procedure TForm1.Button3Click(Sender: TObject);
begin
ClIEntDataSet1.UndoLastChange(True);
end;
end.
測試窗體:
object Form1: TForm1
Left = 0
Top = 0
Caption = 'Form1'
ClIEntHeight = 231
ClIEntWidth = 496
Color = clBtnFace
Font.Charset = DEFAULT_CHARSET
Font.Color = clWindowText
Font.Height = -11
Font.Name = 'Tahoma'
Font.Style = []
OldCreateOrder = False
OnCreate = FormCreate
PixelsPerInch = 96
TextHeight = 13
object ClientDataSet1: TClIEntDataSet
Aggregates = <>
Params = <>
Left = 64
Top = 64
end
object DataSource1: TDataSource
DataSet = ClIEntDataSet1
Left = 64
Top = 120
end
object DBGrid1: TDBGrid
Left = 0
Top = 0
Width = 193
Height = 231
Align = alLeft
DataSource = DataSource1
TabOrder = 0
TitleFont.Charset = DEFAULT_CHARSET
TitleFont.Color = clWindowText
TitleFont.Height = -11
TitleFont.Name = 'Tahoma'
TitleFont.Style = []
end
object ClientDataSet2: TClIEntDataSet
Aggregates = <>
Params = <>
Left = 344
Top = 80
end
object DataSource2: TDataSource
Left = 344
Top = 136
end
object DBGrid2: TDBGrid
Left = 302
Top = 0
Width = 194
Height = 231
Align = alRight
TabOrder = 5
TitleFont.Charset = DEFAULT_CHARSET
TitleFont.Color = clWindowText
TitleFont.Height = -11
TitleFont.Name = 'Tahoma'
TitleFont.Style = []
end
object Button1: TButton
Left = 199
Top = 8
Width = 97
Height = 25
Caption = 'Append'
TabOrder = 4
OnClick = Button1Click
end
object Button2: TButton
Left = 199
Top = 39
Width = 97
Height = 25
Caption = 'Delete'
TabOrder = 2
OnClick = Button2Click
end
object Button3: TButton
Left = 199
Top = 78
Width = 97
Height = 25
Caption = 'UndoLastChange'
TabOrder = 3
OnClick = Button3Click
end
object Button4: TButton
Left = 199
Top = 109
Width = 97
Height = 25
Caption = 'MergeChangeLog'
TabOrder = 1
OnClick = Button4Click
end
object CheckListBox1: TCheckListBox
Left = 199
Top = 152
Width = 97
Height = 70
ItemHeight = 13
TabOrder = 6
OnClick = CheckListBox1Click
end
end