我有一个ASP.NET Web服务。此Web服务工作正常。但是，WSDL列出了一些参数作为任选（的minOccurs = 0），另一些为非可选。一些可选的参数，实际上不是可有可无的，而其他人都被标记为不可选的实际上是可选的。我想解决这个问题，但我找不到在这个信息是从哪里来的位置。

I have a ASP.NET web service. This web service works fine. However, the WSDL lists some parameters as optional (minoccurs = 0) and others as non-optional. Some of the optional parameters are actually not optional, others which are marked as non-optional are actually optional. I would like to fix this, but I can't find the location where this information is coming from.

在我看来，所有的原始类型（整型，布尔型等）是不可选的，所有其他参数都被标记为可选。但是，我找不到在哪里我可以改变这个位置。我想指定默认值，如果缺少在请求中的原始值，并指定非基本参数实际上是可选的。我在哪里做？

It seems to me that all primitive types (int, boolean etc.) are non-optional and all other parameters are marked as optional. However, I can't find a location where I can change this. I would like to specify default values for the primitive values if they are missing in the request and specify which non-primitive parameter is actually optional. Where do I do this?

推荐答案

我假设当你说ASP.net web服务，你与ASMX扩展创建Web服务。我认为，发生在这种情况下，所有的可空类型成为可选的和非可空成为非可选。

I am assuming that when you say ASP.net web services, you are creating web services with ASMX extension. I think that what happens in this case is that all nullable types become optional and non-nullable become non-optional.

您也许可以手动编辑生成的WSDL文件。但是，那么你就必须重做这项工作如果WSDL再生。

You could perhaps manually edit the generated WSDL file. But then you would have to redo that work if the wsdl was regenerated.

我会建议您切换到WCF与basisHttpBinding（除了你服务你的客户应该不会注意到差别的名称）。

I would suggest that you switch to WCF with basisHttpBinding (except for the name of you service your clients should not notice the difference).

使用WCF，你可以简单地标记数据合同的参数要求或不：

Using WCF you can simply mark the parameter in the data contract as required or not:

[DataMember(IsRequired="false")]