如何使用通过运行空间参数异步构造的 PowerShell 对象创建 C# 方法

Question

下面是一些 C# 代码从远程连接打开运行空间，然后调用 PowerShell 的示例。

        PSCollection<PSObject> Test(string remoteServerFullName, PSCredential mySuperSecretCredentials)
        {
            using Runspace runspace = RunspaceFactory
                .CreateRunspace(new WSManConnectionInfo(new Uri($"http://{remoteServerFullName}:5985/WSMAN")) { Credential = mySuperSecretCredentials, AuthenticationMechanism = AuthenticationMechanism.NegotiateWithImplicitCredential });
            runspace.Open();
            using PowerShell powerShell = PowerShell.Create(runspace);
            return powerShell
                .AddCommand("dir")
                .Invoke();
        }

我想让这个异步。

我已经尝试过的选项：

1. 将runspace.Open() 转换为runspace.OpenAsync() 会引发异常System.Management.Automation.Runspaces.InvalidRunspaceStateException: The runspace state is not valid for this operation. ---> System.Management.Automation.Runspaces.InvalidRunspacePoolStateException: Cannot perform the operation because the runspace pool is not in the 'Opened' state. The current state is 'Opening'.
2. 对签名进行适当的更改以使方法异步并在PowerShell.Create(runspace) 之前放置await 会导致生成错误CS1061：PowerShell does not contain a definition for GetAwaiter 等。

有没有办法正确确保这里的PowerShell对象的创建等待运行空间打开后再执行？

Answer 1

快速的方法是用Task.Run包裹它：

PSCollection<PSObject> Test(string remoteServerFullName, PSCredential mySuperSecretCredentials)
{
    return Task.Run(() =>
        {
            using Runspace runspace = RunspaceFactory
                .CreateRunspace(new WSManConnectionInfo(new Uri($"http://{remoteServerFullName}:5985/WSMAN")) { Credential = mySuperSecretCredentials, AuthenticationMechanism = AuthenticationMechanism.NegotiateWithImplicitCredential });
            runspace.Open();
            using PowerShell powerShell = PowerShell.Create(runspace);
            return powerShell
                .AddCommand("dir")
                .Invoke();
        });
}