C#调用Excel报 error CS1969: 找不到编译动态表达式所需的一个或多个类型。是否缺少引用?

转自[http://blog.csdn.net/bodybo/article/details/43191319]

程序需要读取Exel文件，有如下代码段

object oMissing = System.Reflection.Missing.Value;
                Microsoft.Office.Interop.Excel.Application excelApp = new Microsoft.Office.Interop.Excel.Application();
                excelApp.UserControl = true;
                excelApp.DisplayAlerts = false;
                excelApp.Application.Workbooks.Open(strFilePath, oMissing, oMissing, oMissing, oMissing, oMissing, oMissing, oMissing, oMissing, oMissing, oMissing, oMissing, oMissing, oMissing, oMissing);
                Workbook workBook = excelApp.Workbooks[1];
                Worksheet workSheet = (Worksheet)workBook.Worksheets[1];

下面这句话之前的.net2.0上没问题，在.net4.0上报错 error CS1969: 找不到编译动态表达式所需的一个或多个类型。是否缺少引用?

Worksheet workSheet = (Worksheet)workBook.Worksheets[1];

解决方案：修改引用（Microsoft.Office.Interop.Excel）的属性“嵌入互操作类型”由True改为False即可