实际上我要做的是首先将 DAT 文件转换为 Excel,然后通过我的 C# 代码将其分成固定数量的列。因此,在我的第一步中,我所做的是将 DAT 文件转换为具有单列的 Excel 文件,并给定行数作为我的临时 Excel 文件。
xlAppNew1 = new Application();
xlAppNew1.DisplayAlerts = true;
workbooks1 = xlAppNew1.Workbooks;
workbook1 = workbooks1.Open(@filepath, 0, true, 1, "", "", true, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "\t", false, false, 0, true, 1, 0);
xlAppNew1.ActiveWorkbook.SaveAs(@filepathNew, -4143, "", "", false, false, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange,
missing, missing, missing, missing, missing);
现在确保关闭您创建的 COM 对象的所有实例,否则会产生很多问题。其次,在另一个函数中,我打开了我的临时 Excel 文件,以及 Dataset 中的所有数据,然后借助Range 对象和以下方法:
range = range.get_Resize(range.Rows.Count, 9);
string[,] saRet = new string[range.Rows.Count, 9];
range.set_Value(Missing.Value, saRet);
整个代码是这样的:
xlAppNew = new Application();
xlAppNew.DisplayAlerts = true;
workbooks = xlAppNew.Workbooks;
workbook = workbooks.Open(@filepathnew, 0, true, 1, "", "", true, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "\t", false, false, 0, true, 1, 0);
xlWorkSheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets.get_Item(1);
if (getExtension.ToLower() == ".xls")
connString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filepath_second + ";Extended Properties=\"Excel 8.0;HDR=YES;IMEX=1;\"";
else
connString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filepath_second + ";Extended Properties=Excel 12.0 Xml;HDR=Yes;IMEX=1;";
OleDbConnection con = new OleDbConnection(connString);
con.Open();
System.Data.DataTable dtSheet = con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
string tname = dtSheet.Rows[0]["TABLE_NAME"].ToString();
OleDbDataAdapter ad = new OleDbDataAdapter(@"Select * FROM [" + tname + "];", con);
DataSet dset = new DataSet();
ad.Fill(dset);
range = xlWorkSheet.UsedRange;
range = range.get_Resize(range.Rows.Count, 9);
//Create an array.
string[,] saRet = new string[range.Rows.Count, 9];
//Fill the array.
for (int iRow = 0; iRow < range.Rows.Count - 1; iRow++)
{
for (int iCol = 0; iCol < 9; iCol++)
{
switch (iCol)
{
case 0:
saRet[iRow, iCol] = dset.Tables[0].Rows[iRow][0].ToString().Substring(3, 9);//iRow.ToString() + "|" + iCol.ToString();
break;
case 1:
saRet[iRow, iCol] = dset.Tables[0].Rows[iRow][0].ToString().Substring(12, 4);
break;
case 2:
saRet[iRow, iCol] = dset.Tables[0].Rows[iRow][0].ToString().Substring(16, 18);
break;
case 3:
saRet[iRow, iCol] = dset.Tables[0].Rows[iRow][0].ToString().Substring(34, 8);
break;
case 4:
saRet[iRow, iCol] = dset.Tables[0].Rows[iRow][0].ToString().Substring(42, 4);
break;
case 5:
saRet[iRow, iCol] = dset.Tables[0].Rows[iRow][0].ToString().Substring(46, 18);
break;
case 6:
saRet[iRow, iCol] = dset.Tables[0].Rows[iRow][0].ToString().Substring(64, 40);
break;
case 7:
saRet[iRow, iCol] = dset.Tables[0].Rows[iRow][0].ToString().Substring(104, 3);
break;
case 8:
saRet[iRow, iCol] = dset.Tables[0].Rows[iRow][0].ToString().Substring(107, 5);
break;
}
}
}
//Set the range value to the array.
range.set_Value(Missing.Value, saRet);
FieldInfo myf = typeof(MyNewService).GetField("saRet");//Fieldinfo object is also an important part
//**********************
((Range)xlAppNew.Cells[1, 1]).EntireColumn.TextToColumns(Type.Missing, Microsoft.Office.Interop.Excel.XlTextParsingType.xlFixedWidth, Microsoft.Office.Interop.Excel.XlTextQualifier.xlTextQualifierNone, Type.Missing, Type.Missing, Type.Missing, true, Type.Missing, Type.Missing, Type.Missing, myf, Type.Missing, Type.Missing, Type.Missing);
xlAppNew.ActiveWorkbook.SaveAs(@temp_path, -4143, "", "", false, false, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, missing, missing, missing, missing, missing);
希望它可以帮助其他人节省时间。谢谢。