Excel 操作(未完待续)

Excel导入 数据库

View Code

 1 private void GetExcelData07(string str)

 2         {

 3             try

 4             {

 5                 strCon = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source='" + str + "';Extended Properties='Excel 8.0;HDR=Yes;IMEX=1'";

 6                 OleDbConnection myConn = new OleDbConnection(strCon);

 7                 myConn.Open();

 8                 DataTable dtTables = myConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);

 9                 myConn.Close();

10                 DataSet myDataSet = new DataSet();

11                 if (dtTables.Rows.Count > 0)

12                 {

13                     lb_Tag.Items.Clear();

14                     foreach (DataRow dr in dtTables.Rows)

15                     {

16                         string sSName = dr["TABLE_NAME"].ToString();

17                         if (!sSName.Contains("Print_Titles") && !sSName.Contains("Print_Area")) lb_Tag.Items.Add(sSName);

18                     }

19                 }

20             }

21             catch (Exception ex)

22             {

23                 System.Windows.Forms.MessageBox.Show(ex.Message, "您选择的数据导入的EXCEL不是正确的EXCEL！");

24             }

25         }

26 

27         private void GetExcelData03(string str)

28         {

29             try

30             {

31                 strCon = "Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source ='" + str + "';Extended Properties='Excel 8.0;HDR=Yes;IMEX=1'";

32                 OleDbConnection myConn = new OleDbConnection(strCon);

33                 myConn.Open();

34                 DataTable dtTables = myConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);

35                 myConn.Close();

36                 if (dtTables.Rows.Count > 0)

37                 {

38                     lb_Tag.Items.Clear();

39                     foreach (DataRow dr in dtTables.Rows)

40                     {

41                         string sSName = dr["TABLE_NAME"].ToString();

42                         if (!sSName.Contains("Print_Titles") && !sSName.Contains("Print_Area")) lb_Tag.Items.Add(sSName);

43                     }

44                 }

45             }

46             catch (Exception ex)

47             {

48                 System.Windows.Forms.MessageBox.Show(ex.Message, "您选择的数据导入的EXCEL不是正确的EXCEL！");

49             }

50         }

51 

52         private DataSet SelectTable(string sSName)

53         {

54             DataSet myDataSet = new DataSet();

55             OleDbConnection myConn = new OleDbConnection(strCon);

56             string strCom = String.Format("select * from [{0}]", sSName);

57             myConn.Open();

58             OleDbDataAdapter myCommand = new OleDbDataAdapter(strCom, myConn);

59             myCommand.Fill(myDataSet);

60             myConn.Close();

61             return myDataSet;

62         }

63 

64 

65         private void btn_Select_Click(object sender, EventArgs e)

66         {

67             OpenFileDialog MyFilePath = new OpenFileDialog();

68             MyFilePath.Title = "打开文件";

69             MyFilePath.Filter = "Excel2003文件|*.xls|Excel2007文件|*.xlsx";

70             if (MyFilePath.ShowDialog() == DialogResult.OK)

71             {

72 

73                 str_filepath = MyFilePath.FileName.ToString();

74                 tb_FileName.Text = MyFilePath.FileName.ToString();

75             }

76             else

77             {

78                 return;

79             }

80             DataTable dt = new DataTable();

81             if (str_filepath.Contains(".xlsx"))

82             {

83                 GetExcelData07(str_filepath);

84             }

85             else

86             {

87                 GetExcelData03(str_filepath);

88             }

89             ds = SelectTable(lb_Tag.Items[0].ToString());

90             if (ds != null && ds.Tables.Count > 0)

91             {

92                 gridControl.DataSource = CreateDataTable(ds);

93             }

94             else

95             {

96                 tb_FileName.Text = string.Empty;

97             }

98         }

OleDbConnection访问Excel 定义过多字段异常

View Code

1 在查询中，Excel的spreedsheet的列数有256的限制。

2 因此在查询时odCommand.CommandText = "SELECT * FROM ["+sheet+"]"; 改成 "SELECT * FROM ["+sheet+"A:IU]"

3 行数应该也有限制。但是行数限制要比列数宽松。这里就没有对行做限制。

4 这样暂时就解决问题了。