是否可以配置Azure C#函数DocumentDB属性参数? [英] Is it possible to configure Azure C# function DocumentDB attribute arguments?

问题描述

我正在构建一个Azure Http触发的C#函数，并将其输出绑定到Cosmos DB.我的函数定义是这样的:

I'm building an Azure Http triggered C# function with an output binding to Cosmos DB. My function definition is like this:

[FunctionName("HttpTriggerFunction")]
public static async Task<HttpResponseMessage> Run([HttpTrigger(AuthorizationLevel.Function, "post", Route = "myroute")]HttpRequestMessage req,
                                              [DocumentDB("database", "collection", ConnectionStringSetting = "CosmosDBConnection")] IAsyncCollector<dynamic> document,
                                              TraceWriter log)

这很好.

但是，我希望能够在DocumentDB属性中配置数据库和 collection 名称，但是如果尝试以下操作:

However, I would like to be able to configure the database and collection names in the DocumentDB attribute, but if I try something like:

[DocumentDB(ConfigurationManager.AppSettings["DatabaseName"], ConfigurationManager.AppSettings["CollectionName"], ConnectionStringSetting = "CosmosDBConnection")]

然后Visual Studio给我一个编译错误:

then Visual Studio gives me a compilation error:

CS0182属性参数必须是属性参数类型的常量表达式，typeof表达式或数组创建表达式

有什么方法可以配置这些DocumentDB属性参数?

Is there any way to configure these DocumentDB attribute arguments?

推荐答案

您需要执行以下操作:

[DocumentDB("%database%", "%collection%", ConnectionStringSetting = "CosmosDBConnection")] 

，然后定义具有相应名称的设置(不包含%).

and then define settings with corresponding names (without %).

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