Text file printing is working from development server but not working from IIS

Dear All,

I want to print bar codes from an asp.net application.I am using Zebra printer and i have created text files from my application below are the code to create text file

Using dr As SqlDataReader = cmd.ExecuteReader()

              Using StringWriter
                  StringWriter.WriteLine("CT~~CD,~CC^~CT~")
                  StringWriter.WriteLine("^XA~TA000~JSN^LT0^MNW^MTD^PON^PMN^LH0,0^JMA^PR2,2~SD15^JUS^LRN^CI0^XZ")
                  While dr.Read()
                      Dim linex As String = "^FD>;" & dr.Item("BARCODEVALUE") & "^FS"
                      StringWriter.WriteLine("^XA")
                      StringWriter.WriteLine("^MMT")
                      StringWriter.WriteLine("^PW406")
                      StringWriter.WriteLine("^LL0203")
                      StringWriter.WriteLine("^LS0")
                      StringWriter.WriteLine("^BY3,3,82^FT51,113^BCN,,Y,N")
                      StringWriter.WriteLine(linex)
                      StringWriter.WriteLine("^PQ1,0,1,Y^XZ")
                  End While
              End Using
          End Using

This is working fine if i am typing from dos prompt
Type filename.txt >prn

Now i have created a function to print like below

Dim proc As New System.Diagnostics.Process
        With proc.StartInfo
            .FileName = "cmd.exe"
            .Arguments = _shellcmd
        End With

        proc.Start()

where _shellCmd is the command to call dos printing

Dim shellcommand As String = "/C copy " & barcodefile + " lpt1"

this all working from dev server,but after publishing when i press the button nothing happend.I published the site in the same system where the printer is installed and add Defaultpool users to the printer and gave permission to print but still nothing happening.Please help

What I have tried:

Created the barcode text file and it printed from asp.net application which is in development stage

Tags: ASP.NET, DOS, Print