The following example copies the selected rows in a db grid to a list box.procedure TForm1.Button1Click(Sender: TObject); var i, j: Integer; s: string; begin if DBGrid1.SelectedRows.Count>0 then with DBGrid1.DataSource.DataSet do for i:=0 to DBGrid1.SelectedRows.Count-1 do begin GotoBook(pointer(DBGrid1.SelectedRows.Items[i])); for j := 0 to FieldCount-1 do begin if (j>0) then s:=s+', '; s:=s+Fields[j].AsString; end; Listbox1.Items.Add(s); s:= ''; end; end; 是不是要这,改一改就成求和的了
The following example copies the selected rows in a db grid to a list box.procedure TForm1.Button1Click(Sender: TObject); var i, j: Integer; s: string; begin j:=0; if DBGrid1.SelectedRows.Count>0 then with DBGrid1.DataSource.DataSet do for i:=0 to DBGrid1.SelectedRows.Count-1 do begin GotoBook(pointer(DBGrid1.SelectedRows.Items[i])); j:=j+DBGrid1.DataSource.DataSet['字段']; end; StatusBar1.Panels[0].Text:=IntToStr(j); end;
var
i, j: Integer;
s: string;
begin
if DBGrid1.SelectedRows.Count>0 then
with DBGrid1.DataSource.DataSet do
for i:=0 to DBGrid1.SelectedRows.Count-1 do
begin
GotoBook(pointer(DBGrid1.SelectedRows.Items[i]));
for j := 0 to FieldCount-1 do
begin if (j>0) then s:=s+', ';
s:=s+Fields[j].AsString;
end;
Listbox1.Items.Add(s);
s:= '';
end;
end;
是不是要这,改一改就成求和的了
var
i, j: Integer;
s: string;
begin
j:=0;
if DBGrid1.SelectedRows.Count>0 then
with DBGrid1.DataSource.DataSet do
for i:=0 to DBGrid1.SelectedRows.Count-1 do
begin
GotoBook(pointer(DBGrid1.SelectedRows.Items[i]));
j:=j+DBGrid1.DataSource.DataSet['字段'];
end;
StatusBar1.Panels[0].Text:=IntToStr(j);
end;