SQL批量复制“使用ASP.NET无法将数据源中String类型的给定值转换为指定目标列的类型datetime”

I'm working on an ASP.NET MVC4 projet and I'm trying to export data from an xlsx file (Excel 2010 file) to my database by using SQL Bulk Copy. My Excel file contains only 2 columns : the first contains numbers (from 1 to 25) and the second contains characters (successive series of "a, b, c")I'm working on an ASP.NET MVC4 projet and I'm t