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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Add Support for Adding .NET Attributes when Creating .NET Classes ","articleBody":"### Environment\r\n\r\n-   Pythonnet version: 3.x\r\n-   Python version: 3.x\r\n-   Operating System: Any\r\n-   .NET Runtime: .Net Framework 4 / .Net6\r\n\r\n### Details\r\n\r\nI want to be able to specify attributes on my class defined in python. This is essential for my specific use case, but I imagine generally useful. I can come up with 3 different situations where it could be useful to add attributes:\r\n\r\n1. Attributes on types - This can be done with an annotation\r\n2. Attributes on methods - This can be done with an annotation\r\n3. Attributes on properties - It seems clr.clrproperty needs to be modified to support it.\r\n\r\n```python\r\n### from test_clrmethod.py\r\n\r\n# Attaching attributes to types (1)\r\n@clr.attribute(DebuggerDisplayAttribute, \"ExampleClrClass: X={X}\")\r\nclass ExampleClrClass(System.Object):\r\n    __namespace__ = \"PyTest\"\r\n    def __init__(self):\r\n        self._x = 3\r\n\r\n    # Attaching attributes to methods (2)\r\n    @clr.clrmethod(int, [int])\r\n    @clr.attribute(DescriptionAttribute, \"Test method\")\r\n    def test(self, x):\r\n        return x*2\r\n\r\n    def get_X(self):\r\n        return self._x\r\n    def set_X(self, value):\r\n        self._x = value\r\n\r\n   # Attaching attributes to properties (3)\r\n    X = clr.clrproperty(int, get_X, set_X)\\\r\n        .attribute(DescriptionAttribute, \"Gets or sets X\")\\\r\n        .attribute(BrowsableAttribute, True)\r\n\r\n    # Also attaching attributes to properties (3)\r\n    @clr.clrproperty(int)\r\n    @clr.attribute(DescriptionAttribute, \"Gets Y\")\r\n    def Y(self):\r\n        return self._x * 2\r\n```\r\n\r\nRegarding using ```clr.attribte(DebuggerDisplayAttribute, \"...\")``` vs ```clr.attribute(DebuggerDisplay(\"...\"))```, it is exceedingly hard to infer how an attribute is constructed form the attribute value itself. Instead the list of constructors can be iterated and matched with a list of arguments and this way the best matching constructor can be found.\r\n\r\n\r\nI can probably implement this myself, but before making a PR I want to know if it will be accepted or it is a bad idea.","author":{"url":"https://github.com/rmadsen-ks","@type":"Person","name":"rmadsen-ks"},"datePublished":"2022-04-13T09:23:40.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":8},"url":"https://github.com/1768/pythonnet/issues/1768"}