Unit excel;
interface
uses
Windows,Messages,SysUtils,Classes,Graphics,Controls,Forms,Dialogs, StdCtrls,ComObj;
//ComObj是操作OLE对象的函数集
type TForm1 =class(TForm)
Button1: TButton;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.DFM}
procedure TForm1.Button1Click(Sender: TObject);
var
eclApp,WorkBook:Variant;
//声明为OLE Automation 对象
xlsFileName:string;begin
xlsFileName:=‘ex.xls‘;
try
//创建OLE对象Excel Application与 WorkBook
eclApp:=CreateOleObject(‘Excel.Application‘);
WorkBook:=CreateOleobject(‘Excel.Sheet‘);
except
ShowMessage(‘您的机器里未安装Microsoft Excel。‘);
Exit;
end;
try
ShowMessage(‘下面演示:新建一个XLS文件,并写入数据,最后关闭它。‘);
workBook:=eclApp.workBooks.Add;
eclApp.Cells(1 , 1):=‘字符型‘;
eclApp.Cells(2 , 1):=‘Excel文件‘;
eclApp.Cells(1 , 2):=‘Money型‘;
eclApp.Cells(2 , 2):=10.01;
eclApp.Cells(1 , 3):=‘日期型‘;eclApp.Cells(2 , 3):=Date;
WorkBook.saveas(xlsFileName);
WorkBook.close;
ShowMessage(‘下面演示:打开刚创建的XLS文件,并修改其中的内容,然后,由用户决定是否保存。‘);
WorkBook:=eclApp.workBooks.Open(xlsFileName);
eclApp.Cells(2 , 1):=‘Excel文件类型‘;
if MessageDlg(xlsFileName+‘文件已被修改,是否保存?‘,mtConfirmation, [mbYes, mbNo], 0) = mrYes then
WorkBook.save
else
workBook.Saved := True; //放弃修改
WorkBook.Close;
eclApp.Quit;
//退出Excel Application
//释放VARIANT变量
eclApp:=Unassigned;
except
ShowMessage(‘不能正确操作Excel文件。可能是该文件已被其他程序打开, 或系统错误。‘);
WorkBook.close;
eclApp.Quit;
//释放VARIANT变量
eclApp:=Unassigned;
end;
end;
end.
经过上述操作过程后,我们就可以很放心地将数据库中的数据转换成Excel文件了。
