清空PageControl页上所有控件的值var
i:Integer;
begin
begin
if rztbsht.Controls[i].ClassType = TcxTextEdit then
begin
(rztbsht.Controls[i] as TcxTextEdit).Text := '';
end;
if rztbsht.Controls[i].ClassType = TcxComboBox then
begin
(rztbsht.Controls[i] as TcxComboBox).ItemIndex := -1;
end;
if rztbsht.Controls[i].ClassType = TcxMemo then
begin
(rztbsht.Controls[i] as TcxMemo).Text:='';
end;
end;end;
但是清空不了。是不是我写法有问题?
i:Integer;
begin
begin
if rztbsht.Controls[i].ClassType = TcxTextEdit then
begin
(rztbsht.Controls[i] as TcxTextEdit).Text := '';
end;
if rztbsht.Controls[i].ClassType = TcxComboBox then
begin
(rztbsht.Controls[i] as TcxComboBox).ItemIndex := -1;
end;
if rztbsht.Controls[i].ClassType = TcxMemo then
begin
(rztbsht.Controls[i] as TcxMemo).Text:='';
end;
end;end;
但是清空不了。是不是我写法有问题?
i:Integer;
begin
for i:= 0 to rztbsht.ControlCount - 1 do
begin
if rztbsht.Controls[i].ClassType = TcxTextEdit then
begin
(rztbsht.Controls[i] as TcxTextEdit).Text := '';
end;
if rztbsht.Controls[i].ClassType = TcxComboBox then
begin
(rztbsht.Controls[i] as TcxComboBox).ItemIndex := -1;
(rztbsht.Controls[i] as TcxComboBox).Text := -1;
end;
if rztbsht.Controls[i].ClassType = TcxMemo then
begin
(rztbsht.Controls[i] as TcxMemo).Text:='';
end;
end;
end;
i:Integer;
begin
for i:= 0 to rztbsht.ComponentCount - 1 do
begin
if rztbsht.Components[i].ClassType = TcxTextEdit then
begin
(rztbsht.Components[i] as TcxTextEdit).Text := '';
end;
if rztbsht.Components[i].ClassType = TcxComboBox then
begin
(rztbsht.Components[i] as TcxComboBox).ItemIndex := -1;
(rztbsht.Components[i] as TcxComboBox).Text := -1;
end;
if rztbsht.Components[i].ClassType = TcxMemo then
begin
(rztbsht.Components[i] as TcxMemo).Text:='';
end;
end;
end;
begin
rztbsht := PageControl1.Pages[J];
for I:=0 to Pred(rztbsht.ControlCount) do
begin
...
end
end