取得数值，指示设计工具主应用程序目前是否在异动中。
Gets a value indicating whether the designer host is currently loading the document.
从工具箱取得与指定的设计工具主应用程序相关联的工具箱项目集合。
Gets the collection of toolbox items that are associated with the specified designer host from the toolbox.
移除与指定资料格式和指定设计工具主应用程序相关联的先前加入的工具箱建立者。
Removes a previously added toolbox creator that is associated with the specified data format and the specified designer host.
这些序列化工具在每次设计文件载入时，有时候需要建立新的设计工具主应用程序。
These serializers sometimes need to create a new designer host each time the design document is loaded.
使用指定的设计工具主应用程序取得值，指出指定的物件是否为已序列化的工具箱项目。
Gets a value indicating whether the specified object is a serialized toolbox item, using the specified designer host.
取得值，指出表示序列化之工具箱项目的指定物件是否可由指定的设计工具主应用程序使用。
Gets a value indicating whether the specified object, which represents a serialized toolbox item, can be used by the specified designer host.
控制项的设计工具元件在设计阶段会与其设计主应用程序在相同的信任层级内执行。
At design time, the designer component of a control runs with the same level of trust as its design host.
控制项的设计工具元件在设计阶段会与其设计主应用程序在相同的信任层级内执行。
At design time, the designer component of a control runs with the same level of trust as its design host.
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