Problem to create Excel file

Question

Hi,
I'm to create Excel file by C# codes and have got this
Error 1 Assembly 'Microsoft.Office.Interop.Excel, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c' uses 'office, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c' which has a higher version than referenced assembly 'office, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c'
Error 2 Assembly 'Microsoft.Office.Interop.Excel, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c' uses 'Microsoft.Vbe.Interop, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c' which has a higher version than referenced assembly 'Microsoft.Vbe.Interop, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c'
using these codes
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
using System.Text.RegularExpressions;
using System.Globalization;
using System.Collections;
using System.Diagnostics;
using System.Drawing;
using Microsoft.Office.Interop;
using Excel = Microsoft.Office.Interop.Excel;
namespace ns1
class Program
static void Main(string[] args)
string orp_path = "//ABC";
bool allowappend = true;
string test = "test";
Excel.Application app = null;
Excel.Workbook workbook = null;
Excel.Worksheet worksheet = null;
Excel.Range workSheet_range = null;
object misValue = System.Reflection.Missing.Value;
Excel.Application xlApp = new
Microsoft.Office.Interop.Excel.Application();
workbook = xlApp.Workbooks.Add(misValue);
workbook = xlApp.Workbooks.Add(misValue);
worksheet = (Excel.Worksheet)workbook.Worksheets.get_Item(1);
worksheet.Cells[1, 1] = "Run Date";
workbook.SaveAs("c:\\" + test + ".xls", Excel.XlFileFormat.xlOpenXMLTemplate, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
workbook.Close(true, misValue, misValue);
xlApp.Quit();
releaseObject(worksheet);
releaseObject(workbook);
releaseObject(xlApp); ...
on VS 2013. Any advice?
Many Thanks & Best Regards, Hua Min

Answer 1

Hey,
Not sure what the problem is, I got the code working.
One thing you're doing wrong though: Excel.XlFileFormat.xlOpenXMLTemplate supposes you're using the file extension ".xlsx" (Open XML format) and not ".xls" (Microsoft Excel 97-2003).
So you should start by changing either the extension to xlsx or the XlFileFormat to
xlExcel8.
For further reference take a look
here