IDataFactory factory = (IDataFactory) Activator.CreateInstance("DoExcelData",factoryClsName).Unwrap();
如果factoryClsName是引用外部的dll,则没问题,而在一个项目中,则提示指定的转换无效异常,请问怎么解决?
转载于:https://www.cnblogs.com/wujm/archive/2005/06/27/182179.html
转载于:https://www.cnblogs.com/wujm/archive/2005/06/27/182179.html