Delphi中对Excel表格文件的导入和导出操作。

时间:2021-03-28 14:47:48
 
首先,Delphi要在Uses部分,把要使用的外部程序的类写入。在这里,我们把“ExtCtrls,ComObj”写入Uses部分。将Listview列表中的数据导入到Excel文件中。procedure TfreadExcel.WriteExcel;var  i,idex : Integer;  ExcelApp:Variant;begin  try    dlgSave.FileName := '学生信息.xls';    if dlgSave.Execute then    begin      if FileExists(dlgSave.FileName) then      begin        try          if application.messagebox('该文件已经存在,要覆盖吗?','询问',mb_yesno+mb_iconquestion) = idyes then          begin            DeleteFile(PChar(dlgSave.FileName));          end          else          begin            dlgSave.free;            Exit;          end;        except          dlgSave.free;          Exit;        end;      end;      try        ExcelApp:=CreateOleObject('Excel.Application');        ExcelApp.Caption:='应用程序调用 Microsoft Excel';        ExcelApp.WorkBooks.Add; //新增工作簿      except        Application.MessageBox('无法调用Excel!','提示',MB_OK);        Exit;      end;      try        idex := 1;        for i:=0 to rzlvshow.Items.Count-1 do        begin          ExcelApp.Cells[idex,1].Value:=rzlvshow.Items[i].SubItems.strings[0];          ExcelApp.Cells[idex,2].Value:=rzlvshow.Items[i].SubItems.strings[1];          ExcelApp.Cells[idex,3].Value:=rzlvshow.Items[i].SubItems.strings[2];          ExcelApp.Cells[idex,4].Value:=rzlvshow.Items[i].SubItems.strings[3];          ExcelApp.Cells[idex,5].Value:=rzlvshow.Items[i].SubItems.strings[4];          ExcelApp.Cells[idex,6].Value:=rzlvshow.Items[i].SubItems.strings[5];          ExcelApp.Cells[idex,7].Value:=rzlvshow.Items[i].SubItems.strings[6];          idex := idex+1;        end;        if ExcelApp.Worksheets[1].SaveAs(dlgSave.FileName)=0 then        begin          Application.MessageBox('数据导出成功!','导出提示',MB_OK);        end;      finally        ExcelApp.Quit;      end;    end;  except    Application.MessageBox('保存xls文件失败!','提示',MB_OK);    Exit;  end;end;


 

将Excel数据导入到Listivew列表中:

procedure TfreadExcel.ReadExcel;
var
ExcelApp : Variant;
WorkBook : OLEVARIANT;
ExcelRowCount : Integer;
item :TListItem;
i,num : Integer;

begin
try
if dlgOpen.Execute then
begin
try
num := 0;
ExcelApp := CreateOLEObject('Excel.Application');
except
Application.MessageBox('excel没有安装', '提示信息', MB_OK+MB_ICONASTERISK+MB_DEFBUTTON1+MB_APPLMODAL);
Exit;
end;

rzlvshow.Items.Clear;//对ListView先进行清空
WorkBook := ExcelApp.WorkBooks.Open(dlgOpen.FileName);//使用opendialog对话框指定
ExcelApp.Visible := false;
ExcelRowCount := WorkBook.WorkSheets[1].UsedRange.Rows.Count; //获取Excel的行数
SetLength(theArray, ExcelRowCount);

for i := 1 to ExcelRowCount do
begin
item := rzlvshow.Items.Add;
item.Data := Pointer(i);
theArray[num].agreement_id := Trim(excelapp.Cells[i,1].Value); //主协议编号
theArray[num].asset_id := Trim(excelapp.Cells[i,2].Value); //资产单元编号
theArray[num].allot_no := Trim(excelapp.Cells[i,3].Value); //申请书编号
theArray[num].frozen_adjustfare := excelapp.Cells[i,4].Value; //本金
theArray[num].init_date := excelapp.Cells[i,5].Value; //交易日期
theArray[num].remark := Trim(excelapp.Cells[i,6].Value); //备注

item.SubItems.Add(IntToStr(num+1));
item.SubItems.Add(theArray[num].agreement_id);
item.SubItems.Add(theArray[num].asset_id);
item.SubItems.Add(theArray[num].allot_no );
item.SubItems.Add(FloatToStr(theArray[num].frozen_adjustfare));
item.SubItems.Add(IntToStr(theArray[num].init_date));
item.SubItems.Add(theArray[num].remark);
num := num + 1;
end;

if ExcelRowCount=num then
begin
Application.MessageBox('数据导入完成!','提示',MB_OK);
end;
WorkBook.close;
ExcelApp.Quit;
end;
except
Application.MessageBox('文件打开失败!','提示',MB_OK);
end;
end;


获得Excel的行和列数:

  ExcelRowCount : Integer;
ExcelColCount : Integer;
ExcelRowCount := WorkBook.WorkSheets[1].UsedRange.Rows.Count; //获取Excel的行数
ExcelColCount := WorkBook.WorkSheets[1].UsedRange.columns.Count; //获取Excel的列数

对Excel文件的导入和导出就先介绍到这里,欢迎大家光临,如果哪里有讲错的请及时联系我 : 新浪邮箱:chao_song2011@sina.cn     qq:1574203887