c操作excel（多种方法比较）

C#操作excel(多种方法比较)

我们在做excel资料的时候，通常有以下方法。

一.导入导出excel常用方法：

1.用查询表的方式查询并show在数据集控件上。

public static string strCon = " Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source =C:\\08.xls;Extended Properties=Excel 8.0";

public static DataSet ds;

protected void Page_Load(object sender, EventArgs e)

{

OleDbConnection conn = new OleDbConnection(strCon);

string sql = "select * from [Sheet1$]";

conn.Open();

OleDbDataAdapter myCommand = new OleDbDataAdapter(sql, strCon);

ds = new DataSet();

myCommand.Fill(ds, "[Sheet1$]");

conn.Close();

datagrid1.DataMember = "[Sheet1$]";

datagrid1.DataSource = ds;

datagrid1.DataBind(); //Excel.Application excel = new Excel.Application();

//excel.Application.Workbooks.Add(true);

//excel.Visible = true;

}

2.一个一个单元格的进行插入

1 string str = @"Data Source=IT-428E4EA4B0C7\SQLEXPRESS;Initial Catalog=TestBase;Integrated Security=True";

2 SqlConnection conn = new SqlConnection(str);

3 conn.Open();

4 int n = 0;

5 for (int i = 1; i < 20; i++)

6 {

7 if (n > 3)

8 break;

9 else

10 if (msheet.Cells.get_Range("A" + i, Type.Missing).Text.ToString() == "" && n <= 3)

11 { n++; }

12 else

13 {

14 //循环获取excel单元格的值一次一次的插入，excuteSql为执行的存储过程

15 excuteSql(msheet.Cells.get_Range("B" + i, Type.Missing).Text.ToString(),

16 msheet.Cells.get_Range("B" + (i + 1), Type.Missing).Text.ToString(),

17 msheet.Cells.get_Range("B" + (i + 2), Type.Missing).Text.ToString(),

18 conn);

19 i = i + 3;

20

21 }

22 }

23

24 conn.Close();

二快速导入导出

1.我们都知道当向db里批量插入数据的时候我们会选择SqlBulkCopy

if (dataTable!=null && dataTable.Rows.Count!=0)

{

sqlBulkCopy.WriteToServer(dataTable);

}

这个可以看 深山老林新发的一篇SQLServer中批量插入数据方式的性能对比下面是SqlBulkCopy的方法，这个方法有一个弊端就是当excel某一列即有文字，还有日期的时候，会出现null值，我在网上查了一些资料说连接字串加上;HDR=YES;IMEX=1'的时候会都当做字符处理，但是还是会出现一些bug，所以建议最好先把excel数据分析到datatable里然后再用SqlBulkCopy倒入数据库

1 // block copy to DB from Excel

2 //By xijun,

3 //step 1 create an excel file C:\Inetpub\wwwroot\test.xls , fill cell(1,1) with "Data",cell(1,2) with "name"

4 //step 2 create table named "Data" with 2 column ("data","name") in your DB

5 //there the code below:

6 DateTime t1 = DateTime.Now;

7 Response.Write("
start time:" + t1.ToString());

8 string ExcelFile = @"C:\\20090916_Hub_Report.xls";

9 string excelConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + ExcelFile + ";Extended Properties='Excel 8.0;HDR=YES;IMEX=1'";

10

11 using (OleDbConnection excelConnection = new OleDbConnection(excelConnectionString))

12 {

13

14 excelConnection.Open();

15 //Getting source data

16 //非空讀入數據

17 OleDbCommand command = new OleDbCommand("Select [Region],[CustomerPN],[RMA],[Date],[QTY],[Return/Pull] FROM [20090916_Hub_Report$] ", excelConnection);

18 // Initialize SqlBulkCopy object

19

20 using (OleDbDataReader dr = command.ExecuteReader())

21 {

22 // Copy data to destination

23 string sqlConnectionString = @"Data Source=MININT-G87PHNA\SQLEXPRESS;Initial Catalog=GDS_Service;Integrated Security=True";

24 using (SqlBulkCopy bulkCopy = new SqlBulkCopy(sqlConnectionString))

25 {

26 bulkCopy.DestinationTableName = "GDS_Hub_data";

27 //加入只加入一個列的話,那么就會其他數據庫列都默認為空。

28 bulkCopy.ColumnMappings.Add("Region", "region");

29 bulkCopy.ColumnMappings.Add("CustomerPN", "customer_item_number");

30 bulkCopy.ColumnMappings.Add("RMA", "Rma");

31 bulkCopy.ColumnMappings.Add("Date", "date");

32 bulkCopy.ColumnMappings.Add("QTY", "Qty_1");

33 bulkCopy.ColumnMappings.Add("Return/Pull", "return_pull");

34 //bcp.BatchSize = 100;//每次传输的行数

35 //bcp.NotifyAfter = 100;//进度提示的行数

36 bulkCopy.BatchSize = 100;

37 bulkCopy.NotifyAfter = 100;

38 bulkCopy.WriteToServer((IDataReader)dr);

39

40

41 }

42 }

43 //Closing connection

44 excelConnection.Close();

45 }

46

47 DateTime t2 = DateTime.Now;

48 Response.Write("
End time:" + t2.ToString());

49 Response.Write("
use time:" + ((TimeSpan)(t2 - t1)).Milliseconds.ToString() + " Milliseconds");

50 Response.Write("
inser record count :3307");

2.快速导出db的数据到excel

这种方法就是利用

Excel.QueryTables

Excel.QueryTable

Querytable把数据快速导入excel里。我们在做复杂报表的时候，这个用的是比较多了，但是单单会这个没有用，它只是快速的把db里的数据放放到excel里，

在做大量数据而且需要设定excel样式的时候我们会选择先用这种方法把数据导入excel一个临时sheet，再利sheet复制，sheet移动，和一些excel样式设定，以及

excel一个强大的自动填充的功能，那么这些就可以让我们快速的做出花样多试的excel报表，当然这个要求我们比较熟练office的操作，包括宏的操作。

1 public string query_table_getdata(string sourpath)

2 {

3 string str_path = sourpath.Substring(0, sourpath.Length - 22);

4 str_path = str_path + "basic.xls";

5

6 Excel.QueryTables m_objQryTables = null;

7 Excel.QueryTable m_objQryTable = null;

8 Excel.Application m_objExcel = null;

9 Excel.Workbooks m_objBooks = null;

10 Excel.Workbook m_objBook = null;

11 Excel.Sheets m_objSheets = null;

12 Excel.Worksheet m_objSheet = null;

13 Excel.Range m_objRange = null;

14 m_objExcel = new Excel.Application();

15

16 //try

17 //{

18 m_objBooks = m_objExcel.Workbooks;

19 m_objBooks.Open(sourpath, Type.Missing, Type.Missing, Type.Missing, Type.Missing,

20 Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);

21

22 m_objBook = (Excel.Workbook)m_objBooks.get_Item(1);

23

24

25 m_objSheets = (Excel.Sheets)m_objBook.Worksheets;

26 m_objSheet = (Excel.Worksheet)m_objSheets.get_Item(1);

27 m_objRange = m_objSheet.get_Range("A2", Type.Missing);

28 m_objQryTables = m_objSheet.QueryTables;

29 string sqlstr = "SELECT [day01],[day02],[day03],[day04],[day05],[day06],[day07],[day08],[day09],[day10],[day11],[day12],[day13],[day14]";

30 sqlstr += ",[week01] ,[week02],[week03],[week04],[week05],[week06],[week07],[week08],[week09],[week10],[week11],[week12],[week13],[week14]";

31 sqlstr += ",[week15],[week16],[week17],[week18],[week19],[week20],[week21],[week22],[week23],[week24]";

32 sqlstr += " FROM [GDS_Service].[dbo].[GDS_Service_Report_Base] order by groupID ,id";

33 //可以放在配置文件里

34 string conn = @"Provider=SQLOLEDB.1;Data Source=MININT-G87PHNA\SQLEXPRESS;uid=xijun_ke;Password=12345678; Initial Catalog=GDS_Service;Persist Security Info=False;";

35

36 m_objQryTable = (Excel.QueryTable)m_objQryTables.Add("OLEDB;" + conn, m_objRange, sqlstr);

37

38 m_objQryTable.RefreshStyle = Excel.XlCellInsertionMode.xlInsertEntireRows;

39

40 m_objQryTable.Refresh(false);

41 m_objBook.SaveAs(str_path, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Excel.XlSaveAsAccessMode.xlExclusive, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);

42 m_objBook.Close(false, Type.Missing, Type.Missing);

43 //}

44 //catch (Exception ee)

45 //{

46 // mp.WriteLog(ee.ToString());

47 //}

48 //finally

49 //{

50 m_objExcel.Quit();

51 GC.Collect();

52 //}

53 return str_path;

54

55 }

com操作excel的一些特性操作：

range.NumberFormatLocal = "@"; //设置单元格格式为文本

range = (Range)worksheet.get_Range("A1", "E1"); //获取Excel多个单元格区域：本例做为Excel表头

range.Merge(0); //单元格合并动作

worksheet.Cells[1, 1] = "Excel单元格赋值"; //Excel单元格赋值

range.Font.Size = 15; //设置字体大小

range.Font.Underline=true; //设置字体是否有下划线

range.Font.Name="黑体"; 设置字体的种类

range.HorizontalAlignment=XlHAlign.xlHAlignCenter; //设置字体在单元格内的对其方式

range.ColumnWidth=15; //设置单元格的宽度

range.Cells.Interior.Color=System.Drawing.Color.FromArgb(255,204,153).ToArgb(); //设置单元格的背景色

range.Borders.LineStyle=1; //设置单元格边框的粗细

range.BorderAround(XlLineStyle.xlContinuous,XlBorderWeight.xlThick,XlColorIndex.xlColorIndexAutomatic,System.Drawing.Color.Black.ToArgb()); //给单元格加边框

range.EntireColumn.AutoFit(); //自动调整列宽

Range.HorizontalAlignment= xlCenter; // 文本水平居中方式

Range.VerticalAlignment= xlCenter //文本垂直居中方式

Range.WrapText=true; //文本自动换行

Range.Interior.ColorIndex=39; //填充颜色为淡紫色

Range.Font.Color=clBlue; //字体颜色

xlsApp.DisplayAlerts=false; //保存Excel的时候，不弹出是否保存的窗口直接进行保存

workbook.SaveCopyAs(temp);/**////填入完信息之后另存到路径及文件名字excel宏操作，sheet和单元格操作： 1 ///

4 ///

5 ///

6 protected void Button2_Click(object sender, EventArgs e)

7 {

8 DateTime t1 = DateTime.Now;

9 Response.Write("
start time:" + t1.ToString());

10 Excel.Application excelkk = new Excel.Application();

11

12 excelkk.Workbooks.Add(true);

13 int row = 2;

14 DataTable myTable = ds.Tables["[Sheet1$]"];

15 for (int i = 0; i < myTable.Columns.Count; i++)

16 {

17 excelkk.Cells[1, 1 + i] = myTable.Columns[i].ColumnName.ToString();

18 }

19 for (int i = 0; i < myTable.Rows.Count; i++)

20 {

21 for (int j = 0; j < myTable.Columns.Count; j++)

22 {

23 excelkk.Cells[row, j + 1] = myTable.Rows[i][j].ToString();

24 }

25

26 row++;

27 }

28

29

30 //取得特定單元格的值

31 excelkk.Visible = true;

32 this.TextBoxChange.Text = excelkk.get_Range("A2", Type.Missing).Text.ToString();

33 //表的單元格合并

34 Excel.Range range1 = excelkk.get_Range("A2", "D4");

35 range1.Merge(Type.Missing);

36

37

38

39

40 //想表格中插入求和的值

41 Excel.Range range2 = excelkk.get_Range("B25", Type.Missing);

42 range2.Formula = "=SUM(B2:B24)";

43 range2.Calculate();

44

45 //進行宏的循環應用與單元格的刪除和添加，多個單元格默認宏自動操作。

46 Excel.Range range3 = excelkk.get_Range("B25","E25");

47 range2.AutoFill(range3,Excel.XlAutoFillType.xlFillDefault);

48 //刪除表的指定行數操作

49 Excel.Range range7 = null;

50 range7 = excelkk.get_Range(excelkk.Cells[2, 2], excelkk.Cells[4, 4]);

51 range7.Select();

52 range7.EntireRow.Delete(Excel.XlDirection.xlUp);

53

54 //獲取最大用過的行數

55 Excel.Worksheet wsheet1 = (Excel.Worksheet)excelkk.Worksheets.get_Item(1);

56 int n =wsheet1.UsedRange.Cells.Columns.Count;

57 Response.Write(n.ToString() + "
");

58 //MessageBox.Show(n.ToString());

59 n = wsheet1.UsedRange.Cells.Rows.Count;

60 Response.Write(n.ToString() + "
");

61 //MessageBox.Show(n.ToString());

62 //數據的複製

63 Excel.Range range4 = excelkk.get_Range("A2", "B25");

64 Excel.Range range5 = excelkk.get_Range("E3", "F25");

65 //range4.get_Offset(1,4).Select();

66 range4.Copy(range5);

67 //停用警告信息

68 excelkk.DisplayAlerts = false;

69 GC.Collect();

70

71 }

72

73

74 單個sheet里求和：

75 Excel.Range range2 = excelkk.get_Range("B25", Type.Missing);

76 range2.Formula = "=SUM(B2:B24)";

77 range2.Calculate();

78

79 跨sheet求和：

80 Excel.Worksheet wsheet1 = (Excel.Worksheet)excelSql.Worksheets.get_Item(1);

81 Excel.Range range3 =wsheet1.get_Range("A23", Type.Missing);

82 range3.Formula = "=Sheet3!B8+Sheet3!B12";

83 range3.Calculate();

84

虽然我们拥有强大的NPOI，不过我还是写出来，希望对大家理解office有一定的用处。

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