怎样用DELPHI连接EXCEL文件？？？？

Question

本人急需用DELPHI连接EXCEL文件并进行操作的列子，最好给些说明，主要是怎么连上的？？因为我参考了很多资料包括网上的资料但总是连不上若哪位好心人有列子发到我的信箱 ：[email protected]    万分感谢！

Answer 1

function F_DbGridSaveToExcel(as_dbgrid: TDBGridEh;
  as_dataset: TAdodataset): Integer;
var
    i:integer;
    li_row:integer;
    ExcelApplication1:tExcelApplication;
    ExcelWorkbook1:tExcelWorkbook;
    ExcelWorksheet1:tExcelWorksheet;
  
    tb_temp:TBook;
    img_show:TImage;
begin    result:=0;    Try
        ExcelApplication1:=tExcelApplication.Create(nil);
        ExcelWorkbook1:=tExcelWorkbook.Create(nil);
        ExcelWorksheet1:=tExcelWorksheet.Create(nil);
        ExcelApplication1.AutoConnect:=false;
       // ExcelApplication1.ConnectTo( nil);
        ExcelApplication1.Connect;//EXCEL应用程序
//  
    Except
        MessageDlg('Excel may not be installed',mtError, [mbOk], 0);
        Abort;
    End;
 
    ExcelApplication1.Visible[0]:=true;
   // ExcelApplication1.Caption:='Excel Application';    try
      {  ExcelApplication1.Workbooks.Open(as_FileName  ,
            EmptyParam,EmptyParam,EmptyParam,EmptyParam,
            EmptyParam,EmptyParam,EmptyParam,EmptyParam,
            EmptyParam,EmptyParam,EmptyParam,EmptyParam,0);
       }//如果是打开//        ExcelApplication1.Workbooks.Add(EmptyParam,0);
        //新增
        //ExcelWorkbook1.Connectto( ExcelApplication1.Workbooks[1] ) ;        ExcelWorkbook1.Connectto( ExcelApplication1.Workbooks.Add(EmptyParam,0)  ) ;
       // ExcelWorkbook1.ConnectTo( as _workbook  );//ExcelWorkbook1与Eexcelapplication1建立连接
        ExcelWorksheet1.ConnectTo(ExcelWorkbook1.Worksheets[1] as _Worksheet);//Excelworksheet1与
        //ExcelWorksheet1.Cells.Item[1,1]:='1';     li_row:=1;  
     ExcelWorksheet1.Rows.Font.Name:='宋体';
     ExcelWorksheet1.Rows.Font.size:=9;
     ExcelWorksheet1.Rows.AutoFit;
     //ExcelWorksheet1.rows.NumberFormat:='@';//          ExcelWorksheet1.Select                     
//     ExcelWorksheet1.Range['b1','b'+inttostr(as_dataset.RecordCount)].NumberFormat:='@';     for i:=1 to      as_dbgrid.Columns.Count do
     begin        ExcelWorksheet1.Cells.Item[li_row,i]:=as_dbgrid.Columns[i-1].Title.Caption;
     end;
     ExcelWorksheet1.Range['a1','a100'].NumberFormat:='@';
     ExcelWorksheet1.Range['b1','b100'].NumberFormat:='@';     inc(li_row);
     tb_temp:=as_dataset.GetBook;
     as_dbgrid.Enabled:=false;
     as_dataset.First;    img_show:=TImage.Create(as_dbgrid.Parent);
    img_show.Parent:=as_dbgrid;
    img_show.Name:='img_showProgress';
    img_show.Visible:=true;
    img_show.Width:=300;
    img_show.Height:=20;
    img_show.Left:=round(  (as_dbgrid.Width-300)/2 );
    img_show.Top :=round(as_dbgrid.Height/3);
    img_show.BringToFront;
     while not as_dataset.Eof do
     begin
         for i:=1 to      as_dbgrid.Columns.Count do
         begin
            ExcelWorksheet1.Cells.Item[li_row,i]:=trim(as_dataset.fieldbyname(
                                        as_dbgrid.Columns[i-1].FieldName).asstring )  ;         end;
         inc(li_row);
         application.ProcessMessages;
          P_HRDrawImage( img_show ,
                        round(as_dataset.RecNo/as_dataset.RecordCount*img_show.Width),
                        inttostr( round(as_dataset.RecNo/as_dataset.RecordCount*100) )+'%'
                    );
         as_dataset.Next;
     end;     as_dataset.GotoBook(tb_temp);
     as_dataset.FreeBook(tb_temp);
     as_dbgrid.Enabled:=true;    ExcelApplication1.Visible[0]:=true;
    //ExcelWorksheet1.PrintPreview;
    ExcelWorksheet1.Disconnect;
    ExcelWorkbook1.Disconnect;
    ExcelApplication1.Disconnect;
    ExcelWorksheet1.Free;
    ExcelWorkbook1.Free;
    ExcelApplication1.Free;
    except
      on e:exception do begin
        as_dbgrid.Enabled:=true;
        ExcelApplication1.Visible[0]:=true;
        ExcelWorksheet1.Disconnect;
        ExcelWorkbook1.Disconnect;
        ExcelApplication1.Disconnect;
        ExcelWorksheet1.Free;
        ExcelWorkbook1.Free;
        ExcelApplication1.Free;        ShowMessage(e.Message);
        exit;
      end;
    end;    img_show.Free;
result:=1;
end;

Answer 2

楼上的已经写得很全了，没什么好说的了，不过我觉得用自动生成Excel报表可能更好一些

Answer 3

(二) 使用Delphi 控件方法
在Form中分别放入ExcelApplication, ExcelWorkbook和ExcelWorksheet。 
1) 打开Excel 
ExcelApplication1.Connect;
2) 显示当前窗口:
ExcelApplication1.Visible[0]:=True;
3) 更改 Excel 标题栏:
ExcelApplication1.Caption := '应用程序调用 Microsoft Excel';
4) 添加新工作簿:
ExcelWorkbook1.ConnectTo(ExcelApplication1.Workbooks.Add(EmptyParam,0));
5) 添加新工作表:
var Temp_Worksheet: _WorkSheet;
begin
Temp_Worksheet:=ExcelWorkbook1.
WorkSheets.Add(EmptyParam,EmptyParam,EmptyParam,EmptyParam,0) as _WorkSheet;
ExcelWorkSheet1.ConnectTo(Temp_WorkSheet);
End;
6) 打开已存在的工作簿:
ExcelApplication1.Workbooks.Open (c:\a.xls
EmptyParam,EmptyParam,EmptyParam,EmptyParam,
EmptyParam,EmptyParam,EmptyParam,EmptyParam,
EmptyParam,EmptyParam,EmptyParam,EmptyParam,0)
7) 设置第2个工作表为活动工作表:
ExcelApplication1.WorkSheets[2].Activate; 或
ExcelApplication1.WorksSheets[ 'Sheet2' ].Activate;
8) 给单元格赋值:
ExcelApplication1.Cells[1,4].Value := '第一行第四列';
9) 设置指定列的宽度(单位:字符个数),以第一列为例:
ExcelApplication1.ActiveSheet.Columns[1].ColumnsWidth := 5;
10) 设置指定行的高度(单位:磅)(1磅＝0.035厘米),以第二行为例:
ExcelApplication1.ActiveSheet.Rows[2].RowHeight := 1/0.035; // 1厘米
11) 在第8行之前插入分页符:
ExcelApplication1.WorkSheets[1].Rows[8].PageBreak := 1;
12) 在第8列之前删除分页符:
ExcelApplication1.ActiveSheet.Columns[4].PageBreak := 0;
13) 指定边框线宽度:
ExcelApplication1.ActiveSheet.Range[ 'B3:D4' ].Borders[2].Weight := 3;
1-左 2-右 3-顶 4-底 5-斜( \ ) 6-斜( / )
14) 清除第一行第四列单元格公式:
ExcelApplication1.ActiveSheet.Cells[1,4].ClearContents;
15) 设置第一行字体属性:
ExcelApplication1.ActiveSheet.Rows[1].Font.Name := '隶书';
ExcelApplication1.ActiveSheet.Rows[1].Font.Color := clBlue;
ExcelApplication1.ActiveSheet.Rows[1].Font.Bold := True;
ExcelApplication1.ActiveSheet.Rows[1].Font.UnderLine := True;
16) 进行页面设置:
a.页眉:
ExcelApplication1.ActiveSheet.PageSetup.CenterHeader := '报表演示';
b.页脚:
ExcelApplication1.ActiveSheet.PageSetup.CenterFooter := '第&P页';
c.页眉到顶端边距2cm:
ExcelApplication1.ActiveSheet.PageSetup.HeaderMargin := 2/0.035;
d.页脚到底端边距3cm:
ExcelApplication1.ActiveSheet.PageSetup.HeaderMargin := 3/0.035;
e.顶边距2cm:
ExcelApplication1.ActiveSheet.PageSetup.TopMargin := 2/0.035;
f.底边距2cm:
ExcelApplication1.ActiveSheet.PageSetup.BottomMargin := 2/0.035;
g.左边距2cm:
ExcelApplication1.ActiveSheet.PageSetup.LeftMargin := 2/0.035;
h.右边距2cm:
ExcelApplication1.ActiveSheet.PageSetup.RightMargin := 2/0.035;
i.页面水平居中:
ExcelApplication1.ActiveSheet.PageSetup.CenterHorizontally := 2/0.035;
j.页面垂直居中:
ExcelApplication1.ActiveSheet.PageSetup.CenterVertically := 2/0.035;
k.打印单元格网线:
ExcelApplication1.ActiveSheet.PageSetup.PrintGridLines := True;
17) 拷贝操作:
a.拷贝整个工作表:
ExcelApplication1.ActiveSheet.Used.Range.Copy;
b.拷贝指定区域:
ExcelApplication1.ActiveSheet.Range[ 'A1:E2' ].Copy;
c.从A1位置开始粘贴:
ExcelApplication1.ActiveSheet.Range.[ 'A1' ].PasteSpecial;
d.从文件尾部开始粘贴:
ExcelApplication1.ActiveSheet.Range.PasteSpecial;
18) 插入一行或一列:
a. ExcelApplication1.ActiveSheet.Rows[2].Insert;
b. ExcelApplication1.ActiveSheet.Columns[1].Insert;
19) 删除一行或一列:
a. ExcelApplication1.ActiveSheet.Rows[2].Delete;
b. ExcelApplication1.ActiveSheet.Columns[1].Delete;
20) 打印预览工作表:
ExcelApplication1.ActiveSheet.PrintPreview;
21) 打印输出工作表:
ExcelApplication1.ActiveSheet.PrintOut;
22) 工作表保存:
if not ExcelApplication1.ActiveWorkBook.Saved then
ExcelApplication1.ActiveSheet.PrintPreview;
23) 工作表另存为:
ExcelApplication1.SaveAs( 'C:\Excel\Demo1.xls' );
24) 放弃存盘:
ExcelApplication1.ActiveWorkBook.Saved := True;
25) 关闭工作簿:
ExcelApplication1.WorkBooks.Close;
26) 退出 Excel:
ExcelApplication1.Quit;
ExcelApplication1.Disconnect;
(三) 使用Delphi 控制Excle二维图
在Form中分别放入ExcelApplication, ExcelWorkbook和ExcelWorksheet
var asheet1,achart, range:variant;
1)选择当第一个工作薄第一个工作表
asheet1:=ExcelApplication1.Workbooks[1].Worksheets[1];
2)增加一个二维图
achart:=asheet1.chartobjects.add(100,100,200,200);
3)选择二维图的形态
achart.chart.charttype:=4;
4)给二维图赋值
series:=achart.chart.seriescollection;
range:=sheet1!r2c3:r3c9;
series.add(range,true);
5)加上二维图的标题
achart.Chart.HasTitle:=True;
achart.Chart.ChartTitle.Characters.Text:=’ Excle二维图’ 
6)改变二维图的标题字体大小
achart.Chart.ChartTitle.Font.size:=6;
7)给二维图加下标说明
achart.Chart.Axes(xlCategory, xlPrimary).HasTitle := True;
achart.Chart.Axes(xlCategory, xlPrimary).AxisTitle.Characters.Text := '下标说明';
8)给二维图加左标说明
achart.Chart.Axes(xlValue, xlPrimary).HasTitle := True;
achart.Chart.Axes(xlValue, xlPrimary).AxisTitle.Characters.Text := '左标说明';
9)给二维图加右标说明
achart.Chart.Axes(xlValue, xlSecondary).HasTitle := True;
achart.Chart.Axes(xlValue, xlSecondary).AxisTitle.Characters.Text := '右标说明';
10)改变二维图的显示区大小
achart.Chart.PlotArea.Left := 5;
achart.Chart.PlotArea.Width := 223;
achart.Chart.PlotArea.Height := 108;
11)给二维图坐标轴加上说明
achart.chart.seriescollection[1].NAME:='坐标轴说明';