How to get all the metadata keys for any ItemGroup item?
问题 Is there a way to get all the metadata keys associated with a given item? I want to do something like the following. Given: <ItemGroup> <MyItems Include="item1"> <key1>val1</key1> <key2>val2</key2> <key3>val3</key3> </MyItems> <MyItems Include="item2"> <key4>val4</key4> </MyItems> </ItemGroup> Be able to determine that item1 has metadata available for key1, key2, and key3, and that item2 has metadata available for key4, without knowing what the names of those keys actually are. In effect, I'm