Question

i wrote a macro for CSV to excel import for more then 65 k rows. I invoke the macro from c# through a button click.In the macro i wrote the code to read the text file line by line and add to the coloumn. Finally i select the whole coloumn and export to excel using enable “Text to coloumns” by comma seperated.

The problem is , it exports the first row only.

kindly help me.

Sub Read(FileName As String)
 'Dimension Variables
      Dim ResultStr As String
      'Dim FileName As String
      Dim FileNum As Integer
      Dim Counter As Double
      'Ask User for File's Name
      'FileName = InputBox("Please enter the Text File's name, e.g. test.txt")
      'Check for no entry
      If FileName = "" Then End
      'Get Next Available File Handle Number
      FileNum = FreeFile()
      'Open Text File For Input
      Open FileName For Input As #FileNum
      'Turn Screen Updating Off
      Application.ScreenUpdating = False
      'Create A New WorkBook With One Worksheet In It
      Workbooks.Add template:=xlWorksheet
      'Set The Counter to 1
      Counter = 1
      'Loop Until the End Of File Is Reached
      Do While Seek(FileNum) <= LOF(FileNum)
         'Display Importing Row Number On Status Bar
          Application.StatusBar = "Importing Row " & _
             Counter & " of text file " & FileName
          'Store One Line Of Text From File To Variable
          Line Input #FileNum, ResultStr
          'Store Variable Data Into Active Cell
          If Left(ResultStr, 1) = "=" Then
             ActiveCell.Value = "'" & ResultStr
          Else
             ActiveCell.Value = ResultStr
          End If

          'For xl97 and later change 16384 to 65536
          If ActiveCell.Row = 65536 Then
                ActiveWorkbook.ActiveSheet.Columns(1).Select
                Selection.TextToColumns DataType:=xlDelimited, _
                ConsecutiveDelimiter:=True, Space:=False, Comma:=True
                'If On The Last Row Then Add A New Sheet
                ActiveWorkbook.Sheets.Add
          Else
             'If Not The Last Row Then Go One Cell Down
             ActiveCell.Offset(1, 0).Select
          End If
          'Increment the Counter By 1
          Counter = Counter + 1
      'Start Again At Top Of 'Do While' Statement
      Loop
      'Close The Open Text File
      Close
      ActiveWorkbook.ActiveSheet.Columns(1).Select
      Selection.TextToColumns DataType:=xlDelimited, _
      ConsecutiveDelimiter:=True, Space:=False, Comma:=True
      'Remove Message From Status Bar
      Application.StatusBar = False
End Sub

C sharp Button click event,

private void button1_Click(object sender, EventArgs e)
        {
            file_Writer = new StreamWriter(@"c:\tstf.csv",true);
            //file_Writer.Close();
            //first row
            for (int i = 0; i < 8; i++)
            {
                file_Writer.Write("A,");
            }
            file_Writer.Write("\n");


            // second row

            for (int i = 0; i < 8; i++)
            {
                file_Writer.Write("B,");
            }

            file_Writer.Close();

            Thread.Sleep(1000);


            object oMissing = System.Reflection.Missing.Value;

            Excel.ApplicationClass oExcel = new Excel.ApplicationClass();
            oExcel.Visible = true;
            Excel.Workbooks oBooks = oExcel.Workbooks;
            Excel._Workbook oBook = null;
            oBook = oBooks.Open("F:\\read.xls", oMissing, oMissing,
                oMissing, oMissing, oMissing, oMissing, oMissing, oMissing,
                oMissing, oMissing, oMissing, oMissing, oMissing, oMissing);

            // Run the macros.
            //RunMacro(oExcel, new Object[] { "DoKbTest" });
            RunMacro(oExcel, new Object[] { "siva1", @"c:\tstf.csv" });


            // Quit Excel and clean up.
            oBook.Close(false, oMissing, oMissing);
            System.Runtime.InteropServices.Marshal.ReleaseComObject(oBook);
            oBook = null;
            System.Runtime.InteropServices.Marshal.ReleaseComObject(oBooks);
            oBooks = null;
            oExcel.Quit();
            System.Runtime.InteropServices.Marshal.ReleaseComObject(oExcel);
            oExcel = null;


            GC.Collect();
        }

Answer 1

I found the cause of problem . This is due to carriage return “\n”. I add the “\r\n” at the end of line instead of “\n” only.

file_Writer.Write("\r\n");