G
GaryLou
Unregistered / Unconfirmed
GUEST, unregistred user!
如果 Table 是用CacheUpdate , DBGrid.DataSet = Table, 当Save
到磁碟时,会整个Cache储存,但如有多个Record 曾修改,能不能知道曾经
有哪个Record 有过改动呢? How to Know it?望有Source code,多谢
如果 Table 是用CacheUpdate , DBGrid.DataSet = Table, 当Save
到磁碟时,会整个Cache储存,但如有多个Record 曾修改,能不能知道曾经
有哪个Record 有过改动呢? How to Know it?望有Source code,多谢
J
Jams
Unregistered / Unconfirmed
GUEST, unregistred user!
>>
S
slash
Unregistered / Unconfirmed
GUEST, unregistred user!
改变Table的UpdateRecordTypes属性，可仅显示你想显示的纪录。
如，要Undelete纪录时，可将UpdateRecordTypes属性设为rtDeleted，
这样显示的就是刚删除的一些纪录，逐个RevertRecord即可。
TTable1.UpdateRecordTypes.Clear;
TTable1.UpdateRecordTypes << rtDeleted;
TTable1.First;
while not DataSet.Eof do
begin
TTable1.RevertRecord;
TTable1.Next;
end;
(); // undelete the
如，要Undelete纪录时，可将UpdateRecordTypes属性设为rtDeleted，
这样显示的就是刚删除的一些纪录，逐个RevertRecord即可。
TTable1.UpdateRecordTypes.Clear;
TTable1.UpdateRecordTypes << rtDeleted;
TTable1.First;
while not DataSet.Eof do
begin
TTable1.RevertRecord;
TTable1.Next;
end;
(); // undelete the
P
popeye
Unregistered / Unconfirmed
GUEST, unregistred user!
试试这个:
TDataSet.Modified 数据集中当前记录是否被修改
Indicates whether the current record is modified.
property Modified: Boolean;
Description
Check Modified to determine if the current record is modified. If Modified is True, the current record is modified. If False, the current record is not modified.
Note: In general, an application need not check the status of Modified. Properties, events, and methods of TDataSet and its descendants that modify records generally check this status automatically and take appropriate actions based on its value.
TDataSet.Modified 数据集中当前记录是否被修改
Indicates whether the current record is modified.
property Modified: Boolean;
Description
Check Modified to determine if the current record is modified. If Modified is True, the current record is modified. If False, the current record is not modified.
Note: In general, an application need not check the status of Modified. Properties, events, and methods of TDataSet and its descendants that modify records generally check this status automatically and take appropriate actions based on its value.
G
GaryLou
Unregistered / Unconfirmed
GUEST, unregistred user!
slash :
Use UpdateRecordTypes must use BDEDataSet , How to use it.
popeye :
use TDataSet.Modified effect whole table, I must know the current
record status(isModify).
Use UpdateRecordTypes must use BDEDataSet , How to use it.
popeye :
use TDataSet.Modified effect whole table, I must know the current
record status(isModify).
S
slash
Unregistered / Unconfirmed
GUEST, unregistred user!
TTable是从TBDEDataSet继承的，自然可使用UpdateRecordTypes属性。
sorry, “<<”是CB的写法，Delphi因该这样写吧
UpdateRecordTypes := [rtModified, rtInserted, rtUnmodified];
sorry, “<<”是CB的写法，Delphi因该这样写吧
UpdateRecordTypes := [rtModified, rtInserted, rtUnmodified];
O
op
Unregistered / Unconfirmed
GUEST, unregistred user!
试试这个，在DataSource的事件OnDataChange中用BookmarkList来记录。
阿
阿蒙
Unregistered / Unconfirmed
GUEST, unregistred user!
TTable1.UpdateRecordTypes.Clear;
TTable1.UpdateRecordTypes .rtmodified;
TTable1.First;
while not DataSet.Eof do 很浪费时间的
begin
TTable1.RevertRecord;
TTable1.Next;
end;
：）改一下适合他的要求
TTable1.UpdateRecordTypes .rtmodified;
TTable1.First;
while not DataSet.Eof do 很浪费时间的
begin
TTable1.RevertRecord;
TTable1.Next;
end;
：）改一下适合他的要求
G
GaryLou
Unregistered / Unconfirmed
GUEST, unregistred user!
多人接受答案了。