从C#调用F# - Mono.Debugger.Soft.VMDisconnectedException

Question

任何从c#代码调用f#函数的想法。

我有一个像这样的c#函数

public class VehicleDetailsBridge
{

    public void SaveVehicle(long id)
    {
         var db = "test call";
     }
}

然后在f#中我有：

type Persistence as this =
    member x.SaveToDatabase(LatestVid)
    let b = VehicleDetailsBridge()
    b.SaveVehicle(LatestVid)

我在我的C#项目中引用了F#类库。

然而，当我运行这段代码时，我在Xamarin中得到了以下异常：

Mono.Debugger.Soft.VMDisconnectedExecption

Answer 1

type Persistence() =                         // need braces here, and not 'as this'
    member x.SaveToDatabase(latestVid) =
        let b = VehicleDetailsBridge()       // indent the method body
        b.SaveVehicle(latestVid)

我的完整F#程序如下：

open FsCsInterop

type Persistence() =                         // need braces here, and not 'as this'
    member x.SaveToDatabase(latestVid) =
        let b = VehicleDetailsBridge()       // indent the method body
        b.SaveVehicle(latestVid)
        printfn "Saved %d" latestVid

[<EntryPoint>]
let main argv = 
    let p = Persistence()
    p.SaveToDatabase(2L)
    0

// Prints "Saved 2"

Answer 2

试试这个：

let b = VehicleDetailsBridge() // create instance of class
b.SaveVehicle(LatestVid)

VehicleDetailsBridge是一个类，所以您需要将它作为一个类打开。