当DBGrid中的所有行被删除后，如何判断DBGrid中已无行可删，防止继续删除?(100分)

D

daniel_sun

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2002-03-14

• #1

如题

 

U

ugvanxk

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2002-03-14

• #2

if query.recordcount>0 then
query.delete

 

无

无忧鱼

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2002-03-14

• #3

同意楼上,或if not query.isempty then

 

Z

zxb200

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2002-03-14

• #4

if dbgrid.datasource.dataset.isempty then
begin
showmessage('無行可刪除!');
abort;
end;

 

C

cbdiy

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2002-03-14

• #5

同意zxb200,
判断recordcount>0 不行的

 

B

bubble

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2002-03-14

• #6

所有行都没了，你还删除什么？
有什么好判断
if messagedlg('确定要删除所选的记录？',mtConfirmation,[mbyes,mbno],0)= mryes then
with DBGrid1.datasource.datasetdo
begin
First;
While not eofdo
begin
if DBGrid1.SelectedRows.CurrentRowSelected then
Delete
else
Next;
end;
showmessage('删除完毕!');
end;

 

M

microyzy

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2002-03-14

• #7

删除时作判断，同时每次删除后刷新dbgrid

 

Z

zhumoo

Unregistered / Unconfirmed

GUEST, unregistred user!

• 2002-03-14

• #8

同意zxb200,
判断recordcount>0 不行的