如何从Web Service获取错误

本文介绍了如何从Web Service获取错误的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我编写了一个连接数据库的c＃Web服务，将数据检索到数据集中，并将该数据集返回到也用C＃编写的独立应用程序。我可以在我的应用程序中显示该数据。 我的问题是：当Web服务遇到问题时，例如'无法获得oracle连接'，因为数据库可能已关闭...... 如何将错误消息从Web服务返回到我的应用程序并将其显示在消息框中？

I wrote a c# Web Service that connects to database, retrieves data into a dataset and returns that dataset to a Stand alone application also written in C#. I can display that data in my application. My Question is: When the Web service encounters a problem, such as 'unable to get oracle connection' because maybe the database is down... How do I return the error message from the web service to my application and display it in a Message Box?

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通过抛出异常来将错误传播回客户端。 Web服务方法可以通过以下方式执行此操作： - 抛出SoapException异常。 - 抛出SoapHeaderException异常。 - 投掷特定于该问题的异常。 - 允许ASP.NET抛出异常。

Propagating errors back to a client is done by throwing exceptions. A Web service method can do this in the following ways: - Throw a SoapException exception. - Throw a SoapHeaderException exception. - Throw an exception specific to the problem. - Allow ASP.NET to throw the exception.

阅读文档并检查哪种方式最适合您的要求。 处理和抛出XML Web Services中的异常 [ ^ ] 如何：从使用ASP.NET创建的Web服务中抛出异常 [ ^ ] 如何：处理Web服务方法引发的异常 [ ^ ]

Read the documentation and check which way is most suitable for your requirements. Handling and Throwing Exceptions in XML Web Services[^] How to: Throw Exceptions from a Web Service Created Using ASP.NET[^] How to: Handle Exceptions Thrown by a Web Service Method[^]