执行Excel的宏

 internal class ExcelHelper
    {
        /// <summary>
        /// 执行Excel中的宏
        /// </summary>
        /// <param name="excelFilePath">Excel文件路径</param>
        /// <param name="macroName">宏名称</param>
        /// <param name="parameters">宏参数组</param>
        /// <param name="rtnValue">宏返回值</param>
        /// <param name="isShowExcel">执行时是否显示Excel</param>
        public void RunExcelMacro(
                                            string excelFilePath,
                                            string macroName,
                                            object[] parameters,
                                            out object rtnValue,
                                            bool isShowExcel
                                        )
        {
            #region 检查入参
            // 检查文件是否存在
            if (!File.Exists(excelFilePath))
            {
                throw new System.Exception(excelFilePath + " 文件不存在");
            }

            // 检查是否输入宏名称
            if (string.IsNullOrEmpty(macroName))
            {
                throw new System.Exception("请输入宏的名称");
            }
            #endregion


            #region 宏参数对象
            // 准备打开Excel文件时的缺省参数对象
            object oMissing = System.Reflection.Missing.Value;

            // 根据参数组是否为空，准备参数组对象
            object[] paraObjects;

            if (parameters == null)
            {
                paraObjects = new object[] { macroName };
            }
            else
            {
                // 宏参数组长度
                int paraLength = parameters.Length;

                paraObjects = new object[paraLength + 1];

                paraObjects[0] = macroName;
                for (int i = 0; i < paraLength; i++)
                {
                    paraObjects[i + 1] = parameters[i];
                }
            }
            #endregion

            // 创建Excel对象示例
            Microsoft.Office.Interop.Excel.Application oExcel = new Microsoft.Office.Interop.Excel.Application();

            try
            {
                // 判断是否要求执行时Excel可见
                if (isShowExcel)
                {
                    // 使创建的对象可见
                    oExcel.Visible = true;
                }

                // 创建Workbooks对象
                Microsoft.Office.Interop.Excel.Workbooks oBooks = oExcel.Workbooks;
                // 创建Workbook对象
                Microsoft.Office.Interop.Excel._Workbook oBook = null;
                // 打开指定的Excel文件
                oBook = oBooks.Open(
                                        excelFilePath,
                                        oMissing,
                                        oMissing,
                                        oMissing,
                                        oMissing,
                                        oMissing,
                                        oMissing,
                                        oMissing,
                                        oMissing,
                                        oMissing,
                                        oMissing,
                                        oMissing,
                                        oMissing,
                                        oMissing,
                                        oMissing
                                   );

                // 执行Excel中的宏
                rtnValue = this.RunMacro(oExcel, paraObjects);

                // 保存更改
                oBook.Save();

                // 退出Workbook
                oBook.Close(false, oMissing, oMissing);


                #region 释放对象

                // 释放Workbook对象
                System.Runtime.InteropServices.Marshal.ReleaseComObject(oBook);
                oBook = null;

                // 释放Workbooks对象
                System.Runtime.InteropServices.Marshal.ReleaseComObject(oBooks);
                oBooks = null;

                #endregion
            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                if (oExcel != null)
                {

                    // 关闭Excel
                    oExcel.Quit();

                    // 释放Excel对象
                    System.Runtime.InteropServices.Marshal.ReleaseComObject(oExcel);
                    oExcel = null;

                    // 调用垃圾回收
                    GC.Collect();
                }
            }
        }

        /// <summary>
        /// 执行宏
        /// </summary>
        /// <param name="oApp">Excel对象</param>
        /// <param name="oRunArgs">参数（第一个参数为指定宏名称，后面为指定宏的参数值）</param>
        /// <returns>宏返回值</returns>
        private object RunMacro(object oApp, object[] oRunArgs)
        {
            try
            {
                // 声明一个返回对象
                object objRtn;

                // 反射方式执行宏
                objRtn = oApp.GetType().InvokeMember(
                                                        "Run",
                                                        System.Reflection.BindingFlags.Default |
                                                        System.Reflection.BindingFlags.InvokeMethod,
                                                        null,
                                                        oApp,
                                                        oRunArgs
                                                     );

                // 返回值
                return objRtn;

            }
            catch (Exception ex)
            {
                // 如果有底层异常，抛出底层异常
                if (ex.InnerException.Message.ToString().Length > 0)
                {
                    throw ex.InnerException;
                }
                else
                {
                    throw ex;
                }
            }
        }
    }

执行Excel文件的宏

  try
            {
                // 返回对象
                object objRtn = new object();

                // 获得一个ExcelMacroHelper对象
                ExcelHelper excelMacroHelper = new ExcelHelper();

                // 执行指定Excel中的宏，执行时显示Excel
                excelMacroHelper.RunExcelMacro(
                                                    @"C:\Users\Desktop\test2.xlsm",
                                                    "getTime2",
                                                    new Object[] { "现在时刻" },
                                                    out objRtn,
                                                    true
                                              );

                // 执行指定Excel中的宏，执行时不显示Excel
                excelMacroHelper.RunExcelMacro(
                                                    @"C:\Users\Desktop\test2.xlsm",
                                                    "getTime2",
                                                    new Object[] { "现在时刻" },
                                                    out objRtn,
                                                    false
                                               );

                // 执行指定Excel中的宏，执行时显示Excel，有返回值
                excelMacroHelper.RunExcelMacro(
                                                    @"C:\Users\Desktop\test2.xlsm",
                                                    "getTime3",
                                                    new Object[] { "现在时刻" },
                                                    out objRtn,
                                                    true
                                               );

                MessageBox.Show((string)objRtn);

            }
            catch (System.Exception ex)
            {
                MessageBox.Show(ex.Message);
            }

Excel文件：