# Fácil ( Ordenar um StringGrid )

20/05/2003

15

Gostaria de saber se é possível ordenar uma stringgrid.

Grato
Anderson

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20/05/2003

Gostaria de saber se é possível ordenar uma stringgrid. Grato Anderson

2 variações de sort

[quote:36c3206463=´1ª variação´]
type
TMoveSG = class(TCustomGrid); // reveals protected MoveRow procedure

{...}

procedure SortGridByCols(Grid: TStringGrid; ColOrder: array of Integer);
var
i, j: Integer;
Sorted: Boolean;

function Sort(Row1, Row2: Integer): Integer;
var
C: Integer;
begin
C := 0;
Result := AnsiCompareStr(Grid.Cols[ColOrder[C]][Row1], Grid.Cols[ColOrder[C]][Row2]);
if Result = 0 then
begin
Inc(C);
while (C <= High(ColOrder)) and (Result = 0) do
begin
Result := AnsiCompareStr(Grid.Cols[ColOrder[C]][Row1],
Grid.Cols[ColOrder[C]][Row2]);
Inc(C);
end;
end;
end;

begin
if SizeOf(ColOrder) div SizeOf(i) <> Grid.ColCount then Exit;

for i := 0 to High(ColOrder) do
if (ColOrder[i] < 0) or (ColOrder[i] >= Grid.ColCount) then Exit;

j := 0;
Sorted := False;
repeat
Inc(j);
with Grid do
for i := 0 to RowCount - 2 do
if Sort(i, i + 1) > 0 then
begin
TMoveSG(Grid).MoveRow(i + 1, i);
Sorted := False;
end;
until Sorted or (j = 1000);
Grid.Repaint;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
{ Sort rows based on the contents of two or more columns.
Sorts first by column 1. If there are duplicate values
in column 1, the next sort column is column 2 and so on...}
SortGridByCols(StringGrid1, [1, 2, 0, 3, 4]);
end;
[/quote:36c3206463]

[quote:36c3206463=´2ª variação´]
procedure SortStringGrid(var GenStrGrid: TStringGrid; ThatCol: Integer);
const
// Define the Separator
TheSeparator = ´@´;
var
CountItem, I, J, K, ThePosition: integer;
MyList: TStringList;
MyString, TempString: string;
begin
// Give the number of rows in the StringGrid
CountItem := GenStrGrid.RowCount;
//Create the List
MyList := TStringList.Create;
MyList.Sorted := False;
try
begin
for I := 1 to (CountItem - 1) do
MyList.Add(GenStrGrid.Rows[I].Strings[ThatCol] + TheSeparator +
GenStrGrid.Rows[I].Text);
//Sort the List
Mylist.Sort;

for K := 1 to Mylist.Count do
begin
//Take the String of the line (K – 1)
MyString := MyList.Strings[(K - 1)];
//Find the position of the Separator in the String
ThePosition := Pos(TheSeparator, MyString);
TempString := ´´;
{Eliminate the Text of the column on which we have sorted the StringGrid}
TempString := Copy(MyString, (ThePosition + 1), Length(MyString));
MyList.Strings[(K - 1)] := ´´;
MyList.Strings[(K - 1)] := TempString;
end;

// Refill the StringGrid
for J := 1 to (CountItem - 1) do
GenStrGrid.Rows[J].Text := MyList.Strings[(J - 1)];
end;
finally
//Free the List
MyList.Free;
end;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
// Sort the StringGrid1 on the second Column
// StringGrid1 nach der 1. Spalte sortieren
SortStringGrid(StringGrid1, 1);
end;
[/quote:36c3206463]

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