Question

我试图捕获异常的内部异常并将其记录到SQL数据库表中。我已捕获的代码并将SQL异常的异常记录到SQL表中，但即使异常消息显示“查看内部异常以获取详细信息”，我也永远不会获得内部异常记录。就捕获内部异常而言，有人能指出我正确的方向吗？以下是捕获异常的代码，但不适用于内部异常。

                try
                {
                    context.CalculateFreight(xmldoc);
                }
                catch (Exception ex)
                {
                    if (ex.Message.ToString().Length > 2048)
                    {
                        ApplicationError myError = new ApplicationError();
                        myError.ErrorNumber = 1;
                        myError.ErrorSeverity = 1;
                        myError.ErrorState = 1;
                        myError.ErrorLine = 29;
                        myError.ErrorProcedure = "Web Service - ProcessShipping()";
                        myError.ErrorMessage = ex.Message.ToString().Substring(0, 2047);
                        myError.ErrorDateTime = DateTime.Now;

                        context.ApplicationErrors.AddObject(myError);
                        context.SaveChanges();
                    }
                    else
                    {
                        ApplicationError myError = new ApplicationError();
                        myError.ErrorNumber = 1;
                        myError.ErrorSeverity = 1;
                        myError.ErrorState = 1;
                        myError.ErrorLine = 29;
                        myError.ErrorProcedure = "Web Service - ProcessShipping()";
                        myError.ErrorMessage = ex.Message.ToString();
                        myError.ErrorDateTime = DateTime.Now;

                        context.ApplicationErrors.AddObject(myError);
                        context.SaveChanges();
                    }

                    if (ex.InnerException.Message.ToString().Length > 0)
                    {
                        if (ex.InnerException.Message.ToString().Length > 2048)
                        {
                            ApplicationError myInnerException = new ApplicationError();
                            myInnerException.ErrorNumber = 1;
                            myInnerException.ErrorSeverity = 1;
                            myInnerException.ErrorState = 1;
                            myInnerException.ErrorLine = 29;
                            myInnerException.ErrorProcedure = "Web Service - INNER EXCEPTION";
                            myInnerException.ErrorMessage = ex.InnerException.Message.ToString().Substring(0, 2047);
                            myInnerException.ErrorDateTime = DateTime.Now;

                            context.ApplicationErrors.AddObject(myInnerException);
                            context.SaveChanges();
                        }
                        else
                        {
                            ApplicationError myInnerException = new ApplicationError();
                            myInnerException.ErrorNumber = 1;
                            myInnerException.ErrorSeverity = 1;
                            myInnerException.ErrorState = 1;
                            myInnerException.ErrorLine = 29;
                            myInnerException.ErrorProcedure = "Web Service - INNER EXCEPTION";
                            myInnerException.ErrorMessage = ex.InnerException.Message.ToString();
                            myInnerException.ErrorDateTime = DateTime.Now;

                            context.ApplicationErrors.AddObject(myInnerException);
                            context.SaveChanges();
                        }
                    }
                }

Answer 1

如果没有内部异常，则没有内部异常。

从这里开始：How to: Check an Exception's Inner Exception

如果没有原始错误，则InnerException的值为a null引用或Visual Basic中的Nothing。

消息“有关详细信息，请参阅内部异常”。可能是某人的样板文字并不总是适用。

WCF捕获内部异常的问题

1 个答案: