导出delphi stringgrid excel

Question

我想从delphi 7中的stringgrid导出数据到microsoft excel。我一直在用这个代码去做：

objExcel := TExcelApplication.Create(nil); 
    objExcel.Visible[LOCALE_USER_DEFAULT] := true; 
    objWB := objExcel.workbooks.add(null,LOCALE_USER_DEFAULT); 
    lineNumber := 1; 

    for i:=1 to stringgrid1.rowcount-1 do begin 
    for j:=0 to stringgrid1.ColCount-1 do begin 
     objWB.Worksheets.Application.Cells.Item[i+lineNumber,j+1] := ''''+stringgrid1.Cells[j,i]; 
    end; 
    end; 

但是当数据很大时，需要很长时间才能完成。还有其他更快的方式将数据从delphi 7 stringgrid导出为ex​​cel吗？

Answer 1

的最快方法是使用变的数组，只是通过整个数组到Excel：

var 
    xls, wb, Range: OLEVariant; 
    arrData: Variant; 
    RowCount, ColCount, i, j: Integer; 
begin 
    {create variant array where we'll copy our data} 
    RowCount := StringGrid1.RowCount; 
    ColCount := StringGrid1.ColCount 
    arrData := VarArrayCreate([1, RowCount, 1, ColCount], varVariant); 

    {fill array} 
    for i := 1 to RowCount do 
    for j := 1 to ColCount do 
     arrData[i, j] := StringGrid1.Cells[j-1, i-1]; 

    {initialize an instance of Excel} 
    xls := CreateOLEObject('Excel.Application'); 

    {create workbook} 
    wb := xls.Workbooks.Add; 

    {retrieve a range where data must be placed} 
    Range := wb.WorkSheets[1].Range[wb.WorkSheets[1].Cells[1, 1], 
            wb.WorkSheets[1].Cells[RowCount, ColCount]]; 

    {copy data from allocated variant array} 
    Range.Value := arrData; 

    {show Excel with our data} 
    xls.Visible := True; 
end; 

Answer 2

的问题是，您所要求的每一个细胞Excel对象;这在最好的时候是一个缓慢的操作，因此为大量细胞做这件事需要很长时间。不久之前，我遇到过这样的情况：4000行9列需要大约44秒才能转移到Excel。

我目前的解决方案包括创建一个CSV文件，然后导入该CSV到Excel中。

const 
fn = 'c:\windows\temp\csv.csv'; 

var 
csv: tstringlist; 
row, col: integer; 
s: string; 

begin 
csv:= tstringlist.create; 
for row:= 1 to stringgrid1.rowcount do 
    begin 
    s:= ''; 
    for col:= 0 to stringgrid1.ColCount-1 do 
    s:= s + stringgrid1.Cells[col, row-1] + ','; 
    csv.add (s) 
    end; 

csv.savetofile (fn); 
csv.free; 

objExcel := TExcelApplication.Create(nil); 
objExcel.workbooks.open (fn); 
deletefile (fn); 
end; 

另一种方式来自Mike Shkolnik这我引用的是：

var 
xls, wb, Range: OLEVariant; 
arrData: Variant; 

begin 
{create variant array where we'll copy our data} 
arrData := VarArrayCreate([1, yourStringGrid.RowCount, 1, yourStringGrid.ColCount], varVariant); 

{fill array} 
for i := 1 to yourStringGrid.RowCount do 
    for j := 1 to yourStringGrid.ColCount do 
    arrData[i, j] := yourStringGrid.Cells[j-1, i-1]; 

{initialize an instance of Excel} 
xls := CreateOLEObject('Excel.Application'); 

{create workbook} 
wb := xls.Workbooks.Add; 

{retrieve a range where data must be placed} 
Range := wb.WorkSheets[1].Range[wb.WorkSheets[1].Cells[1, 1], 
           wb.WorkSheets[1].Cells[yourStringGrid.RowCount, yourStringGrid.ColCount]]; 

{copy data from allocated variant array} 
Range.Value := arrData; 

{show Excel with our data} 
xls.Visible := True; 
end; 

我建议您尝试两种方法，看看哪是你的目的更快。