System.Data.Entity.Validation.DbEntityValidationException, See 'EntityValidationErrors' property for more details.

 try
 {
    //省略代码
 }
 catch (DbEntityValidationException ex)
 {
     //System.Data.Entity.Validation.DbEntityValidationException:
     //“Validation failed for one or more entities. See 'EntityValidationErrors' property for more details.”
     //获取校验错误信息
     StringBuilder sb = new StringBuilder();
     foreach (DbEntityValidationResult err in ex.EntityValidationErrors)
     {
         sb.AppendLine("实体:" + err.Entry.Entity.GetType().FullName);
         foreach (var x in err.ValidationErrors)
         {
             sb.AppendLine(x.ErrorMessage);
         }
     }

     throw new Exception(sb.ToString());
 }
 catch (Exception ex)
 {
     throw;
 }