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    copied!<p><strong>Getting the labels in correct format</strong></p> <p>The FedEx &amp; UPS APIs provide options to get thermal label specific types. You will beat your head on the keyboard trying to get PDFs to print properly on thermal printers.</p> <p>Some common thermal types EPL/EPL2, ZPL/ZPLII. Most thermal printers will accept documents matching one of these types.</p> <p>For Fedex something like this in your ShipRequest - This is using the FedEx WSDL for shipping.</p> <pre><code>RequestedShipment.LabelSpecification.ImageType = FedExShipService.LabelSpecificationImageType.ZPLII </code></pre> <p>And UPS - Building XML to post to the UPS service.</p> <pre><code>&lt;LabelSpecification&gt; &lt;LabelPrintMethod&gt; EPL2 &lt;/LabelPrintMethod&gt; &lt;/LabelSpecification&gt; </code></pre> <p><strong>Printing the labels</strong></p> <p>You will need to essentially send "raw" data to the printer. I started with this article and adopted it to my solution. FedEx for example returns a byte array which contains the label information - I convert this to a string and then send to the printer.</p> <pre><code>'Convert from Byte Array to String Dim enc As System.Text.ASCIIEncoding = New System.Text.ASCIIEncoding() Dim strConverter As String = enc.GetString(&lt;ByteArrayFromFedEx&gt;) </code></pre> <p><a href="http://www.paulaspinall.com/post/2008/05/31/Sending-data-direct-to-a-printer.aspx" rel="nofollow noreferrer">http://www.paulaspinall.com/post/2008/05/31/Sending-data-direct-to-a-printer.aspx</a></p> <p>There is also another thread on SO about this topic.</p> <p><a href="https://stackoverflow.com/questions/123154/sending-raw-data-to-fedex-label-printer">Sending raw data to FedEx Label printer</a></p>
 

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