让Powershell处理来自C#程序的对象列表

Question

我想在ac#应用程序中添加一个工具,我可以:

1)获取一组对象,并将其传递给我的c#应用程序内部的powershell脚本

2)让powershell脚本更改它传递的对象列表

3)将对象列表返回给c#

我有一个名为Message的外部类

 public class Message 
    { 
        public String name { get; set; } 
        public String from { get; set; } 
        public String to { get; set; } 
        public String date { get; set; } 
        public String subject { get; set; } 
        public String body { get; set; } 
    } 

我填充PSDataCollection列表类如下:

 PSDataCollection<Message> mlist = new PSDataCollection<Message>() 
          { 
              new Message {  to="user1", from="user2", date = "1/10/2010 12:00:00 AM EST", subject = "hi there" , body = "hi again" }, 
              new Message {  to="user1", from="user3", date = "1/10/2010 12:00:00 AM EST", subject = "new messages" , body = "new messages" } 
          } 

在powershell脚本中,我们希望它1)读取每个对象2)通过向它添加2小时来调整日期字段

实施问题:

以下代码是我们尝试使其正常工作.我们遇到的第一个问题是如何从外部DLL导入Message类.

我们尝试了这个:Add-Type"G:\ testBAL\bin\Debug\testBAL.dll"但是出现了错误

任何帮助,将不胜感激.

namespace TestProject 
{ 
    class Program 
    { 
      static void Main(string[] args) 
        { 
            PSDataCollection<Message> mlist = new PSDataCollection<Message>() 
            { 
                new Message {  to="user1", from="user2", date = "1/10/2010 12:00:00 AM EST", subject = "hi there" , body = "hi again" }, 
                new Message {  to="user1", from="user3", date = "1/10/2010 12:00:00 AM EST", subject = "new messages" , body = "new messages" } 
            }; 
            mlist.Complete(); 

            PowerShell ps = PowerShell.Create() 
                .AddScript("Add-Type G:\testBAL\bin\Debug\testBAL.dll") 
                .AddCommand("Select-Object"); 

            IAsyncResult async = ps.BeginInvoke<Message>(mlist); 

            foreach(PSObject result in ps.EndInvoke(async)) 
            { 
                String to = ((Message)(result.BaseObject)).to; 
                Console.WriteLine("to=" + to); 
            } 
        } 
    } 
}

Answer 1

您可以使用PowerShell Runspace在.NET应用程序中创建的PowerShell会话中设置和获取变量.我编辑了您的日期参数并删除了EST,因此可以通过PowerShell的Get-Date cmdlet轻松解析它.

HTH

道格

var mlist = new PSDataCollection<Message>() 
{ 
    new Message {  to="user1", from="user2", date = "1/10/2010 12:00:00 AM", subject = "hi there" , body = "hi again" }, 
    new Message {  to="user1", from="user3", date = "1/10/2010 12:00:00 AM", subject = "new messages" , body = "new messages" } 
};

var rs = RunspaceFactory.CreateRunspace();
rs.Open();
rs.SessionStateProxy.SetVariable("list", mlist);
var ps = PowerShell.Create();
ps.Runspace = rs;

ps.AddScript(@"
    $list | ForEach {
        $_.date = (Get-Date($_.date)).AddHours(2)
    }   
");

ps.Invoke();

var result = rs.SessionStateProxy.GetVariable("list") as PSDataCollection<Message>;
foreach (var item in result)
{
    Console.WriteLine(item.date);
}
rs.Close();