如何从 Powershell 中的 WPF RichTextBox 保存 rtf 文件？

Question

I need to save the file from a RichTextBox WPF that's been created in PowerShell

I've tried piping through System.Windows.Markup.XamlWriter , and I've been banging my head on tons of stuff I deleted back out of. I just can't seem to get this one.

if ($saveFile) {
   $tr = new-object System.Windows.Documents.TextRange($RichEdit.Document.ContentStart,                                                 
                                   $RichEdit.Document.ContentEnd)
   $ascii = (new-Object System.Text.ASCIIEncoding).getbytes($tr)

   #  $docStream = new-Object System.IO.MemoryStream($ascii,$false)
   $docStream = New-Object IO.FileStream $saveFile ,'Append','Write','Read'
   $out = new-object System.Windows.Markup.XamlWriter.Save $tr, $docStream
}

Answer 1

if ($saveFile) {
  $RichEdit.SelectAll()
  $as = New-Object IO.FileStream $saveFile ,'Create'
  $a = $RichEdit.Selection.Save($as,[Windows.DataFormats]::Rtf)
}

Answer 2

The SaveFile Method can be used to do this.

$RichTextBox.SaveFile('C:\Path\File.rtf')

It will store Font and Colors automatically. If plain text output is needed it can be done as follows:

$RichTextBox.SaveFile('C:\Path\File.rtf', 'PlainText')