如何为 HttpRequestMessage class 分配值?

How to assign the values for an HttpRequestMessage class?

我很难为 'HttpRequestMessage' class 赋值。 我的代码是:

let requestMsg = new HttpRequestMessage()
requestMsg.RequestUri = new System.Uri("https://yh-finance.p.rapidapi.com/stock/v2/get-summary?symbol=BMW.DE&region=DE");;

当我分配 URL 时,我得到响应:

val it : bool = false

我尝试分配不同的方法,但也得到了相同的响应。

> requestMsg.Method = HttpMethod.Post;;
val it : bool = false

requestMsg 有这个内容:

> requestMsg;;
val it : HttpRequestMessage =
  Method: GET, RequestUri: '<null>', Version: 1.1, Content: <null>, Headers:
{
}
    {Content = null;
     Headers = seq [];
     Method = GET;
     Options = seq [];
     Properties = seq [];
     RequestUri = null;
     Version = 1.1;
     VersionPolicy = RequestVersionOrLower;}

如何修改 HttpRequestMessage 对象?

F# 中的赋值是通过 <- 完成的:https://docs.microsoft.com/en-us/dotnet/fsharp/language-reference/values/#mutable-variables

requestMsg.Method <- HttpMethod.Post