从C#调用Powershell并处理异常

Question

我使用Process.Start()从C#调用Powershell脚本.如何在C#代码中捕获Powershell脚本引发的异常？

Answer 1

在C#中托管PowerShell引擎非常简单.此代码使用了一个有点过时的API,但它仍然有效,并让您了解所涉及的内容:

string cmd = @"Get-ChildItem $home\Documents -recurse | " +
              "Where {!$_.PSIsContainer -and ($_.LastWriteTime -gt (Get-Date).AddDays(-7))} | " +
              "Sort Fullname | Foreach {$_.Fullname}";

Runspace runspace = null;
Pipeline pipeline = null;

try
{
    runspace = RunspaceFactory.CreateRunspace();
    runspace.Open();
    pipeline = runspace.CreatePipeline();
    pipeline.Commands.AddScript(cmd);
    Collection<PSObject> results = pipeline.Invoke();
    foreach (PSObject obj in results)
    {
        // Consume the results
        Debug.WriteLine(obj);    
    }
}
catch (Exception ex)
{
    Debug.WriteLine(ex);
}
finally
{
    if (pipeline != null) pipeline.Dispose();
    if (runspace != null) runspace.Dispose();
}