What would be powershell version from this c# code?

Question

What would be powershell version of this c# code? I am having hard time get this work in Powershell especially stringbuilder and files.add line where utf8encoding is. Here is my powershell version of the code. http://wikisend.com/download/429800/Add_Files_PS.txt. Here is the error.

Missing expression after ','.
At C:\PowerShell\Add_Item.ps1:60 char:73
+         $newFile = $docLibrary.RootFolder.Files.Add($newDestinationFolderPath, <<<<
UTF8Encoding.UTF8.GetBytes(builder.ToString()), $true)
    + CategoryInfo          : ParserError: (,:String) [], ParseException
    + FullyQualifiedErrorId : MissingExpressionAfterToken

using ( SPSite siteCollection = new SPSite( "http://moss.litwareinc.com" ) ) {
    using ( SPWeb web = siteCollection.OpenWeb( "docs" ) ) {
        SPList list = web.Lists["Sample"];

        //link to the file
        string fileLinkUrl = "http://moss.litwareinc.com/docs/Shared%20Documents/ConfigureIRMinWSS30.doc";

        StringBuilder builder = new StringBuilder();

        using ( TextReader reader = new StreamReader( @"C:\linktodocumenttemplate.txt" ) ) {
            builder.Append( reader.ReadToEnd() );
        }

        //replace string template with values
        builder.Replace( "{0}", fileLinkUrl );

        //should change the name of the .aspx file per item
        SPFile file = list.RootFolder.Files.Add( "link_title.aspx", UTF8Encoding.UTF8.GetBytes(builder.ToString()));

        //set list item properties
        SPListItem item = file.Item;
        item["Content Type"] = "Link to a Document";
        SPFieldUrlValue itemUrl = new SPFieldUrlValue();
        itemUrl.Description = "From sample code";
        itemUrl.Url = fileLinkUrl;
        item["URL"] = itemUrl;
        //persist changes
        item.Update();
    }
}

Answer 1

The builder part you can implement using

 $content = (Get-Content 'C:\linktodocumenttemplate.txt') -replace '\{0}', $filelinkurl

The UTF8 part you can implement using

$utf8 = New-Object -Type "System.Text.UTF8Encoding"
$bytes = $utf8.GetBytes($content)

Answer 2

Edit: What error message you get while running your C# code? I have tested this sample code and it works fine for me.

In any case, you can Run/test your C# code using PowerShell, which means your existing C# code could be reused inside Powershell without a need to implement it as Cmdlet.

Technet sample: http://blogs.technet.com/b/stefan_gossner/archive/2010/05/07/using-csharp-c-code-in-powershell-scripts.aspx

Answer 3

This may work: http://blogs.msdn.com/b/sowmyancs/archive/2008/05/31/how-we-can-create-documents-inside-a-document-library-based-upon-our-content-type-s-document-template.aspx

Powershell:

$oFile = $DocLibrary.RootFolder.Files.Add("TestDoc1.aspx", oWeb.GetFile(oContentType .DocumentTemplateUrl).OpenBinary(), true);