c# - 为什么这个脚本在 C# 中不能正常工作，而它在 PowerShell ISE 中工作

Question

我想运行 PowerShell 脚本以通过 C# 获取列表的 ContentType(s)。在 PowerShell 中，以下脚本有效:

$list.ContentTypes[0].Name

我希望在 C# 中运行时得到相同的结果，如下所示:

powershell.AddScript(string.Format("$web = Get-SPWeb {0}", testWeb));
powershell.AddScript("$web.Lists");
var psObjects = powershell.Invoke();

foreach (var psObject in psObjects)
{
    var currentList = (dynamic)psObject;
    powershell.Runspace.SessionStateProxy.SetVariable("list", psObject);
    powershellContentTypes.AddScript("$list.ContentTypes");
    var psContentTypes = powershellContentTypes.Invoke();

    foreach (dynamic psContentType in psContentTypes)
    {
        // I expect to psContentType to have Name property.
        // But its properties are like string.
        var name = psContentType.Name
    }
}

但是，不幸的是，psContentType 没有任何 Name 属性。所有返回的 psContentTypes 都是 string 类型，其值为:“Microsoft.SharePoint.SPContentType”

我的 C# 脚本有什么问题？

Answer 1

自 PSObject Class 封装一个基础对象，在这种情况下SPContentType ，您可以考虑使用以下选项来访问对象属性:

1. 通过 PSObject.BaseObject Property 访问基础对象

   var contentType = psContentType.BaseObject as SPContentType;
   var contentTypeName = contentType.Name;
   

2. 使用 PSObject.Members访问基本对象属性，例如检索内容类型名称的示例:

   var contentTypeName = psContentType.Members["Name"].Value;
   

修改示例

using (var powershell = PowerShell.Create())
{
   powershell.AddScript("Add-PsSnapin Microsoft.SharePoint.PowerShell");
   powershell.AddScript(string.Format("$web = Get-SPWeb {0}", webUrl));
   powershell.AddScript("$web.Lists");
   var psLists = powershell.Invoke();

   foreach (var psList in psLists)
   {
       powershell.Runspace.SessionStateProxy.SetVariable("list", psList);
       powershell.AddScript("$list.ContentTypes");
       var psContentTypes = powershell.Invoke();

       foreach (var psContentType in psContentTypes)
       {
          //var contentType = psContentType.BaseObject as SPContentType;
          //var name = contentType.Name;


          var type = psContentType.BaseObject.GetType();
          if (type.Name == "SPContentType")
          {
              var contentTypeName = psContentType.Members["Name"].Value;
          }
       }
   }
}