xaml - 将 Activity 序列化为 xaml

Question

我在 Google 上搜索了一下，似乎找不到任何 Xaml-fying 事件的示例 - 好、坏或其他!

public static string ToXaml (this Activity activity)
{
    // i would use ActivityXamlServices to go from Xaml
    // to activity, but how to go other way? documentation
    // is slim, and cannot infer proper usage of 
    // ActivityXamlServices from Xml remarks :S
    string xaml = string.Empty;
    return xaml;
}

欢迎提供提示、提示、指点:)

<小时/>

注意:如此找到this 。将完成工作并在工作后更新。无论如何，任何人都想打败我。更好的是，如果您能找到一种方法来摆脱 WorkflowDesigner，这似乎很奇怪。

Answer 1

好的，已经解决了 this forum posting .

您可以通过 Xaml-fy [即将实例转换为声明性 Xaml] 众所周知的 Activity

public static string ToXaml (this Activity activity)
{
    StringBuilder xaml = new StringBuilder ();

    using (XmlWriter xmlWriter = XmlWriter.Create (
        xaml, 
        new XmlWriterSettings { Indent = true, OmitXmlDeclaration = true, }))

    using (XamlWriter xamlWriter = new XamlXmlWriter (
        xmlWriter, 
        new XamlSchemaContext ()))

    using (XamlWriter xamlServicesWriter = 
        ActivityXamlServices.CreateBuilderWriter (xamlWriter))
    {
        ActivityBuilder activityBuilder = new ActivityBuilder 
        {
            Implementation = activity
        };
        XamlServices.Save (xamlServicesWriter, activityBuilder);
    }

    return xaml.ToString ();
}

您的 Xaml 可能包含某些工件，例如对显示为 xmlns:sap="..."的 System.Activities.Presentation 命名空间的引用。如果这在您的解决方案中出现问题，请阅读上面的源链接 - 有一种方法可以注入(inject)指令来忽略无法识别的 namespace 。

将保持此状态一段时间。如果有人能找到更好的解决方案，或对此进行改进，请务必:)