c# - .NET 中包关系的目的是什么？

Question

.NET 中的包关系 (ZipPackage) 到底是什么？我知道什么是包，但我无法理解关系的目的。您能否举例说明我何时想使用它们以及它们有什么好处？

Answer 1

来自 MSDN (包类):

Package is an abstract class that can be used to organize objects into a single entity of a defined physical format for portability and efficient access.

和:

A PackageRelationship ("relationship") defines an association between a source Package or PackagePart and a target object. A PackageRelationship can be one of two types, each of which can be one of two forms:

* A package-level relationship (created by the Package.CreateRelationship method) relates a Package to either:
      o A target part in the package.
      o A target resource outside the package.
* A part-level relationship (created by the PackagePart.CreateRelationship method) relates a source PackagePart to either:
      o Another target part in the package.
      o A target resource outside the package.

所以，当创建一个Package时，如果你想表明一个对象与包的另一部分之间存在关系，你应该使用一个PackageRelationship来表明它是一种什么样的关系。

ZipPackage 也可用于处理 Open Office XML 文件 - 在此用例中，有时指示对象之间的关系很有用。参见 here .