Microsoft OLEDB错误外部表格不是预期的格式

我已经写了一个代码，可以读取使用Microsoft数据访问引擎的Excel 2007文件下面的代码片段适用于大多数的文件，但它恰好适用于大多数的Excel文件，即.xlsx， .xls，但是当它失败objConn.Open（）; 对于有excel格式问题的excel文件请参考下面的图片

它将无法打开ole DB连接说明错误外部表格不是预期的格式 。 这个导入程序的另一个问题是

OleDbCommand objCmdSelect = new OleDbCommand("SELECT * FROM "+ SelectionSheet, objConn); 

是不能够阅读工作表从空格开始任何帮助解决这个问题将不胜感激。

  public DataTable ReadExcel(string Path, ArrayList IgnoreString, ArrayList IgnoreColumn) { DataTable dtReturn = new DataTable(); DataTable dtPrintable = new DataTable(); DataTable dtTemp = new DataTable(); try { string sConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;" + "Data Source=" + Path + ";" + "Extended Properties=\"Excel 12.0 Xml;HDR=YES;IMEX=1;\""; OleDbConnection objConn = new OleDbConnection(sConnectionString); objConn.Open(); DataTable dtSheetnames = objConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null); DataTable dtTesting = objConn.GetOleDbSchemaTable(OleDbSchemaGuid.DbInfoLiterals, new object[] {}); DataTable dtTesting2 = objConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables_Info, new object[] { }); string SelectionSheet = dtSheetnames.Rows[0][2].ToString(); if (SelectionSheet.Contains("'") ) { SelectionSheet = SelectionSheet.Remove(0, 1); SelectionSheet = "[" + SelectionSheet; SelectionSheet = SelectionSheet.Remove(SelectionSheet.Length - 1, 1); // -- Mod by zeemz on 23 dec // string PrintArea = SelectionSheet + "Print_Area]"; SelectionSheet = SelectionSheet + "]"; } else { SelectionSheet = "["+ SelectionSheet + "]"; } //OleDbCommandBuilder objCmdBuilder = new OleDbCommandBuilder( OleDbCommand objCmdSelect = new OleDbCommand("SELECT * FROM "+ SelectionSheet, objConn); OleDbDataAdapter objAdapter = new OleDbDataAdapter(); DataSet objDataSet = new DataSet(); DataSet PrintAreads = new DataSet(); objAdapter.SelectCommand = objCmdSelect; objAdapter.Fill(objDataSet); // -- Mod by zeemz on 23 dec //objCmdSelect.CommandText = "SELECT * FROM " + PrintArea; //objAdapter.Fill(PrintAreads); objConn.Close(); dtReturn = objDataSet.Tables[0].Copy(); // dtPrintable = PrintAreads.Tables[0].Copy(); // -- Mod by zeemz on 23 dec //if (dtPrintable.Columns.Count != dtReturn.Columns.Count) //{ // int TotalPrintable = dtPrintable.Columns.Count; // int TotalComing = dtReturn.Columns.Count; // int StartRemovingPos = TotalComing - TotalPrintable; // for (int i = TotalPrintable; dtPrintable.Columns.Count != dtReturn.Columns.Count; i++) // { // dtReturn.Columns.RemoveAt(i); // i = i - 1 ; // } //} int iCount = 0; while (iCount <= dtReturn.Rows.Count - 1) { if (isRowEmpty(dtReturn.Rows[iCount])) { dtReturn.Rows.RemoveAt(iCount); } else { iCount += 1; } } //now applying the filters //column ignore for (int i = IgnoreColumn.Count - 1; i >= 0; i--) { dtReturn.Columns.RemoveAt((int)IgnoreColumn[i]); } //string ignore for (int i = IgnoreString.Count - 1; i >= 0; i--) { for (int j = dtReturn.Rows.Count - 1; j >= 0; i--) { foreach (DataColumn dCol in dtReturn.Columns) { if (dtReturn.Rows[j][dCol.ColumnName].ToString().ToLower().Contains(IgnoreString[i].ToString().ToLower())) { dtReturn.Rows.RemoveAt(j); break; } } } } /* Hack to get rid of DateTime Columns */ // added by zeemz dtTemp = dtReturn.Clone(); dtTemp.Clear(); foreach (DataColumn tempColumn in dtTemp.Columns) { // if (tempColumn.DataType == typeof(DateTime)) // { tempColumn.DataType = typeof(String); // } } foreach (DataRow tempRow in dtReturn.Rows) { DataRow insRow = dtTemp.NewRow(); foreach (DataColumn tempColumn in dtReturn.Columns) { if (tempColumn.DataType == typeof(DateTime)) { if (!String.IsNullOrEmpty(tempRow[tempColumn.ColumnName.ToString()].ToString())) { insRow[tempColumn.ColumnName.ToString()] = Convert.ToDateTime(tempRow[tempColumn.ColumnName.ToString()].ToString()).ToString("yyyyMMddhhmmss"); } else { insRow[tempColumn.ColumnName.ToString()] = ""; } } else { insRow[tempColumn.ColumnName.ToString()] = tempRow[tempColumn.ColumnName.ToString()].ToString(); } } dtTemp.Rows.Add(insRow); } } catch (Exception ex) { throw ex; } return dtTemp; } 

Answer 1

我碰巧发现问题存在当您修改xlsx文件时手动或编程方式不使用excel一旦您修改xlsx格式不保留完好，上面提到的错误出现，因为OleDbDataAdapter无法处理修改后的文件和Excel它自己可以修复损坏的文件，如预期的那样显示文件。