捕捉Entity framework 6的详细异常提示

采用

try
            {

            }
            catch (Exception e)
            {

                throw;
            }

　不能捕捉到详细异常提示, e.message的内容为"Validation failed for one or more entities. See ‘EntityValidationErrors‘ property for more details."

如果需要获取详细的异常提示,采用

 1 try
 2         {
 3             return base.SaveChanges();
 4         }
 5         catch (DbEntityValidationException ex)
 6         {
 7             var errorMessages = ex.EntityValidationErrors
 8                     .SelectMany(x => x.ValidationErrors)
 9                     .Select(x => x.ErrorMessage);
10
11             var fullErrorMessage = string.Join("; ", errorMessages);
12
13             var exceptionMessage = string.Concat(ex.Message, " The validation errors are: ", fullErrorMessage);
14
15             throw new DbEntityValidationException(exceptionMessage, ex.EntityValidationErrors);
16         }

链接:http://stackoverflow.com/questions/15820505/dbentityvalidationexception-how-can-i-easily-tell-what-caused-the-error