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POHow pipe powershell commands in c#
 

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    <p>The goal is get the smallest database of an Exchange 2010 site, so I'm trying to run the following powershell command from c#,</p> <pre><code>Get-MailboxDatabase -server Exchange2010 -Status | select-object Name,DatabaseSize </code></pre> <p>The problem I'm struggling is - how pipe the Select clause command.</p> <p>This is my attemp, </p> <pre><code>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&lt;PSObject&gt; 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(); </code></pre> <p>but I'm getting, </p> <pre><code>"A parameter cannot be found that matches parameter name 'Name'." </code></pre> <p>Please keep in mind I cannot use SnapIn because the code must run on a client machine that executes cmdlets on the Exchange server.</p> <p>Any advice is welcome. </p> <p><strong>EDIT</strong></p> <p>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."</p> <p><img src="https://i.stack.imgur.com/Sjq06.png" alt="exception"></p> <p>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.</p>
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    1. CO`select` is an alias for Select-Object, I don't think you can use aliases in the `Command` constructor (I generally do not.)
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    2. CO@MichaelEdenfield, if I change it to Select-Object then I get "A parameter cannot be found that matches parameter name 'DatabaseSize'". Notice the same command runs fine in powershell ISE, Get-MailboxDatabase -server exchange2010 -Status | select-object DatabaseSize
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