1.dbgrid中这一列绑定的字段假设为table1 中的 a1: var b:string ; with table1 do begin close; open; b:= fieldbyname('a1').asstring; if not(b in ['0'..'9']) then b:=0; end;
//在KEYPRESS事件中可用 procedure TForm1.DBGrid1KeyPress(Sender: TObject; var Key: Char); begin if not (Key in ['0'..'9']) then Key := #0 ; end;
procedure TForm1.DBGrid1KeyPress(Sender: TObject; var Key: Char); begin if (Sender as TDBGrid).SelectedField.FieldName ='Field1' then if not (Key in ['0'..'9']) then Key := #0 ; end;//其中Field1就是你要限制的字段名
var b:string ;
with table1 do
begin
close;
open;
b:= fieldbyname('a1').asstring;
if not(b in ['0'..'9']) then
b:=0;
end;
procedure TForm1.DBGrid1KeyPress(Sender: TObject; var Key: Char);
begin
if not (Key in ['0'..'9']) then Key := #0 ;
end;
begin
if (Sender as TDBGrid).SelectedField.FieldName ='Field1' then
if not (Key in ['0'..'9']) then Key := #0 ;
end;//其中Field1就是你要限制的字段名