初衷是用TComboBox组件CBFilter显示数据模块DataMod中表Table1的字段列表
请问下面两个语句差别在那里(CBFilter在FilterForm中)
我写的,语法过了,执行的时候在列表中无任何值
procedure TFilterForm.FormCreate(Sender: TObject);
var
i:integer;begin
with FilterForm.CBFilter do
begin
for i:=0 to DataMod.Table1.FieldCount-1 do
begin
Items[i]:=DataMod.Table1.Fields[i].FieldName;
end;
end;end;
例子写的,执行正确,但with...do语句能这样用哦??望高手解答呀
procedure TFilterForm.FormCreate(Sender: TObject);
var
i: integer;
begin
with DM.Table1 do begin
for i := 0 to FieldCount - 1 do
CBField.Items.Add(Fields[i].FieldName);
end;
end;
请问下面两个语句差别在那里(CBFilter在FilterForm中)
我写的,语法过了,执行的时候在列表中无任何值
procedure TFilterForm.FormCreate(Sender: TObject);
var
i:integer;begin
with FilterForm.CBFilter do
begin
for i:=0 to DataMod.Table1.FieldCount-1 do
begin
Items[i]:=DataMod.Table1.Fields[i].FieldName;
end;
end;end;
例子写的,执行正确,但with...do语句能这样用哦??望高手解答呀
procedure TFilterForm.FormCreate(Sender: TObject);
var
i: integer;
begin
with DM.Table1 do begin
for i := 0 to FieldCount - 1 do
CBField.Items.Add(Fields[i].FieldName);
end;
end;
with FilterForm.CBFilter do
begin
Items.Clear;
for i:=0 to DataMod.Table1.FieldCount-1 do
begin
Items.AddString(DataMod.Table1.Fields[i].FieldName);
end;
end;end;
zhangtz(风情):
with do 并不只是方便让你少写那些重复的代码,对目标代码也能有所优化的。
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