[英]How pipe powershell commands in c#
The goal is get the smallest database of an Exchange 2010 site, so I'm trying to run the following powershell command from c#, 我们的目标是获取Exchange 2010网站的最小数据库,因此我试图从c#运行以下powershell命令,
Get-MailboxDatabase -server Exchange2010 -Status | select-object Name,DatabaseSize
The problem I'm struggling is - how pipe the Select clause command. 我苦苦挣扎的问题是-如何通过Select子句命令传递管道。
This is my attemp, 这是我的尝试
WSManConnectionInfo wsConnectionInfo = new WSManConnectionInfo(new Uri("https://" + ExchangeSite + "/powershell?serializationLevel=Full"),
"http://schemas.microsoft.com/powershell/Microsoft.Exchange", getCredential());
wsConnectionInfo.AuthenticationMechanism = AuthenticationMechanism.Basic;
wsConnectionInfo.SkipCACheck = true;
wsConnectionInfo.SkipCNCheck = true;
rsRemoteRunspace = RunspaceFactory.CreateRunspace(wsConnectionInfo);
rsRemoteRunspace.Open();
Pipeline pipeLine = rsRemoteRunspace.CreatePipeline();
Collection<PSObject> DatabaSize = null;
Command myCommand = new Command("Get-MailboxDatabase");
myCommand.Parameters.Add("Server", "Exchange2010");
myCommand.Parameters.Add("Status", null);
Command myCommand2 = new Command("Select-Object");
myCommand.Parameters.Add("Name");
myCommand.Parameters.Add("DatabaseSize");
pipeLineMB.Commands.Add(myCommand);
pipeLineMB.Commands.Add(myCommand2);
DatabaSize = pipeLine.Invoke();
but I'm getting, 但我明白了
"A parameter cannot be found that matches parameter name 'Name'."
Please keep in mind I cannot use SnapIn because the code must run on a client machine that executes cmdlets on the Exchange server. 请记住,我不能使用SnapIn,因为该代码必须在运行Exchange服务器上的cmdlet的客户端计算机上运行。
Any advice is welcome. 欢迎任何建议。
EDIT 编辑
I applied the fix suggested by yamen and the command was able to be invoked but when I try to get the value, I get: "Object reference not set to an instance of an object." 我应用了yamen建议的修复程序,并且能够调用该命令,但是当我尝试获取该值时,我得到:“对象引用未设置为对象的实例。”
Notice that I can get the values of Servername and Name but it fails in the DatabaseSize so I guess the 'Status' flag is not being set properly because this flag is the one which enables this value. 请注意,我可以获取Servername和Name的值,但是它在DatabaseSize中失败,因此我猜想'Status'标志未正确设置,因为该标志是启用此值的标志。
Here did you mean this: 您的意思是这样的:
Command myCommand2 = new Command("Select-Object");
myCommand2.Parameters.Add("DatabaseSize");
Instead of this: 代替这个:
Command myCommand2 = new Command("Select-Object");
myCommand.Parameters.Add("DatabaseSize");
Notice myCommand2
on the second line? 注意第二行上的myCommand2
吗?
Regardless, you might find that the parameter you're actually after is Property
viz: 无论如何,您可能会发现实际上要使用的参数是Property
viz:
myCommand2.Parameters.Add("Property", "DatabaseSize");
And for more than one: 而且不止一个:
var props = new string[] { "DatabaseSize", "ServerName", "Name" };
myCommand2.Parameters.Add("Property", props);
I just tried this, to have a similar scenario 我只是试过这个,有类似的情况
dir | select Name
It doesn't work. 没用 Gives me the same error saying 'Name' isn't a valid parameter. 给我同样的错误,说“名称”不是有效的参数。 Then I tried the below, it works 然后我尝试了下面的方法
dir | select -first 3
translates to 转换为
Runspace runspace = RunspaceFactory.CreateRunspace();
runspace.Open();
Pipeline pipeline = runspace.CreatePipeline();
Command dir = new Command("dir");
pipeline.Commands.Add(dir);
Command select = new Command("select");
select.Parameters.Add("first", 3);
pipeline.Commands.Add(select);
You would need to find the name of the parameter for which DatabaseSize
is the value, I guess. 我想,您需要找到DatabaseSize
是其值的参数的名称。
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