如何将 4 个工作表添加到我的 Excel 工作表 C#

如何解决如何将 4 个工作表添加到我的 Excel 工作表 C#

首先很抱歉我的语言不好 当我在没有 WorkSheet 2,3 和 4 的情况下运行代码时，代码运行正常，但如果我添加了 WorkSheet2 、 workSheet3、Worksheet4 ..“用 4 张纸创建 excel”，我会发现以下消息： System.Runtime.InteropServices.COMException: '无效索引。 （来自 HRESULT 的异常：0x8002000B (disP_E_BAdindEX)）

 // creating Excel Application  
                Microsoft.Office.Interop.Excel._Application app = new Microsoft.Office.Interop.Excel.Application();
                // creating new WorkBook within Excel application  
                Microsoft.Office.Interop.Excel._Workbook workbook = app.Workbooks.Add(Type.Missing);
                
                // creating new Excelsheet in workbook  
                Microsoft.Office.Interop.Excel._Worksheet worksheet = null;
                Microsoft.Office.Interop.Excel._Worksheet worksheet2 = null;
                Microsoft.Office.Interop.Excel._Worksheet worksheet3 = null;
                Microsoft.Office.Interop.Excel._Worksheet worksheet4= null;

                // see the excel sheet behind the program  
                app.Visible = true;
                // get the reference of first sheet. By default its name is Sheet1.  
                // store its reference to worksheet  
                worksheet = workbook.Sheets["Sheet1"];
                worksheet2 = workbook.Sheets["Sheet2"];
                worksheet3 = workbook.Sheets["Sheet3"];
                worksheet3 = workbook.Sheets["Sheet4"];
                worksheet.Name = "Sh01";
                worksheet2.Name = "Sh02";
                worksheet3.Name = "Sh03";
                worksheet3.Name = "Sh04";


                worksheet.Activate();