ASP.NET Web 服务中的可选参数
我有一个 ASP.NET Web 服务。 该网络服务运行良好。 但是，WSDL 将某些参数列为可选（minoccurrs = 0），将其他参数列为非可选。 一些可选参数实际上不是可选的，其他标记为非可选的参数实际上是可选的。 我想解决这个问题，但我找不到此信息的来源位置。
在我看来，所有原始类型（int、boolean 等）都是非可选的，所有其他参数都标记为可选。 但是，我找不到可以更改此设置的位置。 如果请求中缺少原始值，我想指定它们的默认值，并指定哪个非原始参数实际上是可选的。 我在哪里做这个？
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.
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?
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我假设当您说 ASP.net Web 服务时，您正在创建具有 ASMX 扩展的 Web 服务。 我认为在这种情况下发生的情况是所有可为空的类型都变为可选，不可为空的类型变为非可选。
您也许可以手动编辑生成的 WSDL 文件。 但是如果重新生成了 wsdl，您就必须重做这项工作。
我建议您使用 basicHttpBinding 切换到 WCF（除了您的服务名称之外，您的客户不应注意到差异）。
使用 WCF，您可以简单地根据需要或不需要标记数据协定中的参数：
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.
You could perhaps manually edit the generated WSDL file. But then you would have to redo that work if the wsdl was regenerated.
I would suggest that you switch to WCF with basisHttpBinding (except for the name of you service your clients should not notice the difference).
Using WCF you can simply mark the parameter in the data contract as required or not:
原语不是引用类型，而是值类型。 您可以通过几种方式将值类型设置为“可空”。
这里是短手
还是长手
The primitives are not reference types, but rather they are value types. You can make a value type "nullable" a couple ways.
The short-hand is
or long-hand here