Interface Elements for Desktop > Print Preview > Print Preview for WinForms > Load a Print Preview from a File
To open a previously saved document, click the Open 
button on the toolbar, or press CTRL+O.
On the invoked Open dialog, define the file and click Open.
Note
If you open a document previously saved to the hard drive, it is impossible to change its page settings (e.g. page size, orientation, margins, etc.). So, the Page Setup and Scale buttons will be disabled.
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