C# 创建以及修改Excel

添加引用

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.Office.Interop.Excel;
namespace ConsoleApp2
{
    public class CreateExcel
    {
        Application excel = new Application();
        public Workbook workbook;
        public Worksheet worksheet;
        public int index;
        public CreateExcel()
        {
            excel.Visible = false;
            workbook = excel.Workbooks.Add(System.Reflection.Missing.Value);
            worksheet =(Worksheet) workbook.Sheets[1];
            index = worksheet.Cells.SpecialCells(XlCellType.xlCellTypeLastCell).Row;

            worksheet.Range[string.Format("A{0}", index)].Value = "fileVersion";
            worksheet.Range[string.Format("B{0}", index)].Value = "productVersion";
            worksheet.Range[string.Format("C{0}", index)].Value = "fileName";
        }

        public void NewSheet()
        {
            Worksheet newsheeet = excel.Worksheets.Add(After: this.worksheet);
        }

        public void Save(string path)
        {
            this.workbook.SaveAs(path,Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing,XlSaveAsAccessMode.xlShared, Type.Missing, Type.Missing, Type.Missing);
        }

        public void fill(string fileVersion, string productVersion,string fileName)
        {
            worksheet.Range[string.Format("A{0}",index+1)].Value = fileVersion;
            worksheet.Range[string.Format("B{0}", index+1)].Value = productVersion;
            worksheet.Range[string.Format("C{0}", index+1)].Value = fileName;
            index += 1;
        }
    }
}