如果需要按照数字排序,您可以编写一个比较器。通过将Stringgrid强制转换为其祖先TCustomgrid,您可以使用MoveRow过程来交换行。以下是一个示例,展示如何对多列进行排序:
unit StringGridSortEnh;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, Grids, StdCtrls;
type
TForm1 = class(TForm)
StringGrid1: TStringGrid;
Button1: TButton;
Button2: TButton;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
type
TMoveSG = class(TCustomGrid);
TSortInfo = Record
col: Integer;
asc: Boolean;
End;
function CompareNumber(i1, i2: Double): Integer;
begin
if i1 < i2 then
Result := -1
else if i1 > i2 then
Result := 1
else
Result := 0;
end;
function CompareValues(const S1, S2 : String;asc:Boolean): Integer;
var
V1, V2 : Double;
C1, C2 : Integer;
begin
Val(S1, V1, C1);
Val(S2, V2, C2);
if (C1 = 0) and (C2 = 0) then
Result := CompareNumber(V1, V2)
else
Result := AnsiCompareStr(S1, S2);
if not Asc then Result := Result * -1;
end;
procedure SortGridByCols(Grid: TStringGrid; ColOrder: array of TSortInfo; Fixed: Boolean);
var
I, J, FirstRow: Integer;
Sorted: Boolean;
function Sort(Row1, Row2: Integer): Integer;
var
C: Integer;
begin
C := 0;
Result := CompareValues(Grid.Cols[ColOrder[C].col][Row1], Grid.Cols[ColOrder[C].col][Row2],ColOrder[C].asc);
if Result = 0 then
begin
Inc(C);
while (C <= High(ColOrder)) and (Result = 0) do
begin
Result := CompareValues(Grid.Cols[ColOrder[C].col][Row1], Grid.Cols[ColOrder[C].col][Row2],ColOrder[C].asc);
Inc(C);
end;
end;
end;
begin
for I := 0 to High(ColOrder) do
if (ColOrder[I].col < 0) or (ColOrder[I].col >= Grid.ColCount) then
Exit;
if Fixed then
FirstRow := 0
else
FirstRow := Grid.FixedRows;
J := FirstRow;
Sorted := True;
repeat
Inc(J);
for I := FirstRow to Grid.RowCount - 2 do
if Sort(I, I + 1) > 0 then
begin
TMoveSG(Grid).MoveRow(i + 1, i);
Sorted := False;
end;
until Sorted or (J >= Grid.RowCount + 1000);
Grid.Repaint;
end;
procedure TForm1.Button1Click(Sender: TObject);
const
MyArray: array[0..3] of TSortInfo =
((col: 1; asc: true),
(col: 2; asc: true),
(col: 3; asc: true),
(col: 4; asc: false)
);
begin
SortGridByCols(StringGrid1,MyArray,true);
end;
procedure TForm1.Button2Click(Sender: TObject);
const
MyArray: array[0..0] of TSortInfo = ((col: 1; asc: true));
begin
SortGridByCols(StringGrid1,MyArray,true);
end;
end.
![enter image description here](https://istack.dev59.com/Coq8R.webp)
TMoveSG(StringGrid1).DoOPMoveColRow(false,1,3);
应该可以解决问题,因为 MoveRow 没有实现。您需要进行验证... - bummi