从ASP.NET异步调用powershell脚本

本文关键字：powershell 脚本 调用 异步 ASP NET | 更新日期: 2023-09-27 17:53:25

尝试在ASP中异步调用powershell脚本。. NET IHttHandler，我在http://msdn.microsoft.com/en-us/library/ee706580(v=vs.85).aspx上偶然发现了这个例子。我自己的代码是这样的:

using (PowerShell powershell = PowerShell.Create()) {
    powershell.AddScript("1..10 | foreach {$_ ; start-sleep -milli 500}");
    PSDataCollection<PSObject> output = new PSDataCollection<PSObject>();
    output.DataAdded += delegate(object sender, DataAddedEventArgs e) {
        PSDataCollection<PSObject> myp = (PSDataCollection<PSObject>)sender;
        Collection<PSObject> results = myp.ReadAll();
    };
    powershell.InvocationStateChanged += delegate(object sender, PSInvocationStateChangedEventArgs e) {
        if (e.InvocationStateInfo.State == PSInvocationState.Completed) {
            // Clean up
        }
    };
    IAsyncResult asyncResult = powershell.BeginInvoke<PSObject, PSObject>(null, output);
}

不幸的是，powershell脚本显然没有被执行。任务管理器中没有powershell进程。

我在DataAdded和IncovationStateChanged处理程序中设置断点。第一个从来没有被调用，第二个显示，e.InvocationStateInfo.State从来没有变成Completed，而是以Stopped结束。

我做错了什么?

从ASP.NET异步调用powershell脚本

这适用于控制台应用程序:

using (PowerShell powershell = PowerShell.Create())
{
    powershell.AddScript("1..10 | foreach {$_ ; start-sleep -milli 500}");
    var output = new PSDataCollection<PSObject>();
    output.DataAdded += delegate(object sender, DataAddedEventArgs e)
    {
        Console.WriteLine(output[e.Index]);
        var myp = (PSDataCollection<PSObject>)sender;
        Collection<PSObject> results = myp.ReadAll();
    };
    powershell.InvocationStateChanged += delegate(object sender, PSInvocationStateChangedEventArgs e)
    {
        if (e.InvocationStateInfo.State == PSInvocationState.Completed)
        {
            // Clean up
        }
    };
    IAsyncResult asyncResult = powershell.BeginInvoke<PSObject, PSObject>(null, output);
    asyncResult.AsyncWaitHandle.WaitOne();
}

如果您稍后不以某种方式同步或返回并等待调用完成，PowerShell引擎将关闭，因为powershell.Dispose()在超出using {}作用域时被调用。

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