procedure TForm1.DBEdit2Exit(Sender: TObject);
begin
table1.Edit;
if (DBEdit1.Field.text <> '') and (DBEdit2.Field.text <> '') then
DBEdit3.Field.text:=DBEdit1.Field.text+DBEdit2.Field.text;
table1.Post;
end;
如何得到1+1=2
begin
table1.Edit;
if (DBEdit1.Field.text <> '') and (DBEdit2.Field.text <> '') then
DBEdit3.Field.text:=DBEdit1.Field.text+DBEdit2.Field.text;
table1.Post;
end;
如何得到1+1=2
begin
table1.Edit;
if (DBEdit1.Field.text <> '') and (DBEdit2.Field.text <> '') then
DBEdit3.Field.AsInteger:=DBEdit1.Field.AsInteger+DBEdit2.Field.AsInteger;
table1.Post;
end;