Excel[.xls|.xlsx|.csv] 导入 导出

程序集

1 using System.IO;

2 using System.Data;

3 using System.Data.OleDb;

4 using System.Data.Odbc;

导入[.xls|.xlsx]

 1  public static DataTable FromExceFile(string pathName)

 2         {

 3             DataSet ds = new DataSet();

 4             try

 5             {

 6 

 7                 FileInfo file = new FileInfo(pathName);

 8                 if (!file.Exists)

 9                 {

10                     throw new Exception("Not exist!");

11                 }

12                 string ext=file.Extension.ToLower();

13                 if (ext!=".xls" && ext!="xlsx")

14                 {

15                     throw new Exception("File Extension Must Be:.xls Or .xlsx");

16                 }

17 

18            

19                 string xlsConn = string.Format(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + pathName + ""

20                     + @";Extended Properties='Excel 8.0;HDR={0};IMEX=1;'", "YES");

21 

22                 //"HDR=Yes;" 第一行是表头，不是数据

23                 //"IMEX=1;" 把混合数据当作文本读取

24                 string xlsxConn= "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + pathName 

25                      + ";Extended Properties='Excel 12.0;HDR=Yes;IMEX=1;'";

26 

27 

28                 OleDbConnection cnn = new OleDbConnection(ext.Equals(".xlsx")?xlsxConn:xlsConn);

29                 cnn.Open();

30                 DataTable dttemp = cnn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);

31                 string tableName = dttemp.Rows[0][2].ToString().Trim();

32 

33                 OleDbCommand com = new OleDbCommand("SELECT * FROM ["+tableName+"]", cnn);

34                 OleDbDataAdapter objAdapter = new OleDbDataAdapter();

35                 objAdapter.SelectCommand = com;

36                 objAdapter.Fill(ds, "TempTable");

37                 cnn.Close();

38                 cnn.Dispose();

39             }

40             catch (OdbcException ex)

41             {

42 

43             }

44 

45             DataTable dt = ds.Tables["TempTable"];

46             return dt;

47         }

导入[.cvs]

 1   public static DataTable FromCsvFile(string pathName)

 2         {

 3             DataSet ds = new DataSet();

 4             DataTable dt;

 5             try

 6             {

 7 

 8                 FileInfo file = new FileInfo(pathName);

 9                 if (!file.Exists)

10                 {

11                     throw new Exception("Not exist!");

12                 }

13                 if (file.Extension.ToLower()!=".csv")

14                 {

15                     throw new Exception("File Extension Must Be .csv");

16                 }

17                 string csvConn="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + pathName 

18                       + ";Extended Properties='Text;HDR=YES;'";

19                 OleDbConnection cnn = new OleDbConnection(csvConn);

20                 cnn.Open();

21                 OleDbCommand com = new OleDbCommand("SELECT * FROM ["+file.Name +"]", cnn);

22                 OleDbDataAdapter da=new OleDbDataAdapter();

23                 da.SelectCommand = com;

24                 da.Fill(ds, "TempTable");

25                 da.Dispose();

26                 cnn.Close();

27                 cnn.Dispose();

28 

29 

30             }

31             catch

32             {

33                 dt=new DataTable();

34                 return dt;

35             }

36 

37             dt=ds.Tables["TempTable"];

38 

39             return dt;

40 

41         }

导出[.xls|.cvs]

 1   public static void ExportExcel()

 2         {

 3             List<string[]> exportDataList = new List<string[]>();

 4             int FieldCount=3;

 5             string[] titleRow = new string[FieldCount];

 6             int i=0;

 7             titleRow[i++]="Name";

 8             titleRow[i++]="Age";

 9             titleRow[i++]="Tel";

10             exportDataList.Add(titleRow);

11 

12             for(int k=0;k<10;k++)

13             {

14                 i=0;

15                 string[] row = new string[FieldCount];

16                 row[i++]="Name "+k;

17                 row[i++]="Age "+k;

18                 row[i++]="Tel "+k;

19                 exportDataList.Add(row);

20             }

21             Export(exportDataList,"export.xls");

22         }

23         public static void Export(List<string[]> dataList,string fileName)

24         {             

25 

26             string rowTmp="<td style=\"vnd.ms-excel.numberformat:@\">{0}</td>";

27             string html = "";

28             html += "<html xmlns:x=\"urn:schemas-microsoft-com:office:excel\">";

29             html += "<head>";

30             html += "<!--[if gte mso 9]>";

31             html += "<xml>";

32             html += " <x:ExcelWorkbook>";

33             html += " <x:ExcelWorksheets>";

34             html += " <x:ExcelWorksheet>";

35             html += " <x:Name>Winner</x:Name>";

36             html += " <x:WorksheetOptions>";

37             html += " <x:Print>";

38             html += " <x:ValidPrinterInfo />";

39             html += " </x:Print>";

40             html += " </x:WorksheetOptions>";

41             html += " </x:ExcelWorksheet>";

42             html += " </x:ExcelWorksheets>";

43             html += "</x:ExcelWorkbook>";

44             html += "</xml>";

45             html += "<![endif]-->";

46             html += "</head>";

47             html += "<body>";

48             html += "<table>";

49 

50             bool IsHeader=true;

51             foreach (var row in dataList)

52             {

53                 string r="";

54                 string rowTemplate=rowTmp;

55                 if (IsHeader)

56                 {

57                     IsHeader=false;

58                     rowTemplate="<td><strong>{0}</strong></td>";

59                 }                   

60                      

61                 foreach(var fielddata in row)

62                 {

63                     r+=string.Format(rowTemplate, fielddata);

64                 }                  

65              

66                 html+=(string.Format("<tr>{0}</tr>", r));

67             }

68                   

69          

70             html += "</table>";

71             html += "</body>";

72             html += "</html>";

73 

74 

75             HttpResponse resp=Page.Response;

76             resp.ContentEncoding = System.Text.Encoding.Default;

77             resp.AppendHeader("Content-Disposition", "attachment;filename="+fileName);

78             resp.ContentType = "application/ms-excel";

79             resp.Clear();

80             resp.Write(html);

81             resp.Flush();

82             resp.End();

83         }

 Excel单元格的格式：

 使用<td style="vnd.ms-excel.numberformat:@"></td> 进行设置

    //1） 文本：vnd.ms-excel.numberformat:@
    //2） 日期：vnd.ms-excel.numberformat:yyyy/mm/dd
    //3） 数字：vnd.ms-excel.numberformat:#,##0.00
    //4） 货币：vnd.ms-excel.numberformat:￥#,##0.00
    //5） 百分比：vnd.ms-excel.numberformat: #0.00%

 1 <Workbook xmlns="urn:schemas-microsoft-com:office:spreadsheet"

 2    xmlns:x="urn:schemas-microsoft-com:office:excel"

 3    xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet"

 4    xmlns:html="http://www.w3.org/TR/REC-html40">

 5 

 6 <x:ExcelWorkbook>

 7     <WindowHeight>1000</WindowHeight>

 8     <WindowWidth>1000</WindowWidth>     

 9 </x:ExcelWorkbook>

10 

11 <ss:Styles>

12     <ss:Style ss:ID="Default" ss:Name="Normal">

13         <Font x:Family="Swiss" ss:Size="10" ss:Bold="0"/>

14         <ss:Alignment ss:Vertical="Bottom"/>

15     </ss:Style>

16     <ss:Style ss:ID="s22">

17         <Font x:Family="Swiss" ss:Size="12" ss:Bold="1"/>

18         <ss:NumberFormat ss:Format="0.00;[Red]0.00"/>

19     </ss:Style>

20 </ss:Styles>

21  

22 

23 <Worksheet ss:Name="Sheet one">  

24       

25     <ss:Table>

26         <ss:Row>

27             <ss:Cell>

28                 <ss:Data ss:Type="String">Total</ss:Data>

29             </ss:Cell>

30             <ss:Cell ss:StyleID="s22">

31                 <ss:Data ss:Type="Number">-45</ss:Data>

32             </ss:Cell>

33             <ss:Cell ss:StyleID="s22">

34                 <ss:Data ss:Type="Number">-99.3</ss:Data>

35             </ss:Cell>

36 

37            <ss:Cell ss:Index="8" ss:Formula="=AVERAGE(RC[-6]:RC[-5])"></ss:Cell>

38            </ss:Row>

39 

40            <ss:Row>

41             <ss:Cell ss:MergeAcross="1" ss:MergeDown="1">

42             <ss:Data ss:Type="String">Monday tip</ss:Data>

43             <ss:Comment ss:Author="Author" ss:ShowAlways="1">

44                  <ss:Data><html:B><html:Font html:Face="Tahoma" html:Size="8" html:Color="000000">Author:</html:Font></html:B>

45                                   <html:Font html:Face="Tahoma" html:Size="8" html:Color="000000">&10;The </html:Font>

46                           <html:B><html:Font html:Face="Tahoma" x:Family="Swiss" html:Size="8" html:Color="000000">first</html:Font></html:B>

47                                   <html:Font html:Face="Tahoma" x:Family="Swiss" html:Size="8" html:Color="000000"> day of the week.</html:Font>

48                   </ss:Data>

49               </ss:Comment>

50             </ss:Cell>

51            <ss:Cell ss:Index="7" ss:HRef="http://www.microsoft.com">

52                       <ss:Data ss:Type="String">Linked Cell</ss:Data>

53            </ss:Cell>

54 

55         </ss:Row>

56     </ss:Table> 

57 </Worksheet>

58 

59 

60 

61 </Workbook>

XML格式

 该实例使用的命名空间：

   xmlns="urn:schemas-microsoft-com:office:spreadsheet"
   xmlns:x="urn:schemas-microsoft-com:office:excel"
   xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet"
   xmlns:html="http://www.w3.org/TR/REC-html40"