Hi,
I am development a project using C#.Net. Inside application, it needs to
print labels on different Zebra label printers on the network. I used a shell
script, but it only worked on the server machine locally. Anybody knows how
to do it?
Thanks,
Peng
56  14053 
Hi
I've just done exactly this.....
I went down a few dead ends before getting there....
I initially formatted my Zebra label in ZPL in a txt file, and used a CMD
line TYPE label.txt > \\computername\ printershare
The label printed fine. However, I then started to code this using interop
making calls to the Win32 API to direct print.
The prints did not happen, and I was baffled. I wasn't sure why it wasn't
printing, so I then had my code shell out to a CMD line, and run the same
TYPE redirect to the printer.
This didn't work!! It worked from my own command line, but not when the code
shelled it....
Its a permission problem. The ASPNET account doesn't have permissions to the
printer in a corporate network environment.
To get round this I added the following line to web.config
<Identity Impersonate = true />
This makes the requests on the server run in the security context of the web
requestor (ie. a valid user, and not the ASPNET account)
I expected this to work..... but it did not..... :-((
The problem was that I was still shelling out to execute the TYPE, and when
you do this, the account runs under ASPNET again!!!
I re-instated my direct print code in windows, and it worked straight away!!!
To summise:
- add <identity impersonate = true /> to your web.config file
- make an interop call back to the Win32 API to execute direct printing to a
printer share.
I have some sample code if you would like it.
Good luck.. HTH
Paul
MCSD, MCDBA
"peng" wrote: Hi,
I am development a project using C#.Net. Inside application, it needs to
print labels on different Zebra label printers on the network. I used a shell
script, but it only worked on the server machine locally. Anybody knows how
to do it?
Thanks,
Peng
Paul provided me with the sample code and I applied it to my application. It
worked beautifully!! Thanks a lot, Paul!
Peng
"Paul Aspinall" wrote: Hi
I've just done exactly this.....
I went down a few dead ends before getting there....
I initially formatted my Zebra label in ZPL in a txt file, and used a CMD
line TYPE label.txt > \\computername\ printershare
The label printed fine. However, I then started to code this using interop
making calls to the Win32 API to direct print.
The prints did not happen, and I was baffled. I wasn't sure why it wasn't
printing, so I then had my code shell out to a CMD line, and run the same
TYPE redirect to the printer.
This didn't work!! It worked from my own command line, but not when the code
shelled it....
Its a permission problem. The ASPNET account doesn't have permissions to the
printer in a corporate network environment.
To get round this I added the following line to web.config
<Identity Impersonate = true />
This makes the requests on the server run in the security context of the web
requestor (ie. a valid user, and not the ASPNET account)
I expected this to work..... but it did not..... :-((
The problem was that I was still shelling out to execute the TYPE, and when
you do this, the account runs under ASPNET again!!!
I re-instated my direct print code in windows, and it worked straight away!!!
To summise:
- add <identity impersonate = true /> to your web.config file
- make an interop call back to the Win32 API to execute direct printing to a
printer share.
I have some sample code if you would like it.
Good luck.. HTH
Paul
MCSD, MCDBA
"peng" wrote:
Hi,
I am development a project using C#.Net. Inside application, it needs to
print labels on different Zebra label printers on the network. I used a shell
script, but it only worked on the server machine locally. Anybody knows how
to do it?
Thanks,
Peng
Hi Paul,
May I have your code please? I didn't understand what you mean with "make an
interop call back to the Win32 API to execute direct printing to a printer
share"
I'm experiencing the same problem when trying to print to a shared printer
from an ASP.net application. impersonate=tru e doesn't help alone... Thanks in
advance. I need your solution immediately...
Yours sincerely,
Kayıhan Onuk
"Paul Aspinall" wrote: Hi
I've just done exactly this.....
I went down a few dead ends before getting there....
I initially formatted my Zebra label in ZPL in a txt file, and used a CMD
line TYPE label.txt > \\computername\ printershare
The label printed fine. However, I then started to code this using interop
making calls to the Win32 API to direct print.
The prints did not happen, and I was baffled. I wasn't sure why it wasn't
printing, so I then had my code shell out to a CMD line, and run the same
TYPE redirect to the printer.
This didn't work!! It worked from my own command line, but not when the code
shelled it....
Its a permission problem. The ASPNET account doesn't have permissions to the
printer in a corporate network environment.
To get round this I added the following line to web.config
<Identity Impersonate = true />
This makes the requests on the server run in the security context of the web
requestor (ie. a valid user, and not the ASPNET account)
I expected this to work..... but it did not..... :-((
The problem was that I was still shelling out to execute the TYPE, and when
you do this, the account runs under ASPNET again!!!
I re-instated my direct print code in windows, and it worked straight away!!!
To summise:
- add <identity impersonate = true /> to your web.config file
- make an interop call back to the Win32 API to execute direct printing to a
printer share.
I have some sample code if you would like it.
Good luck.. HTH
Paul
MCSD, MCDBA
"peng" wrote:
Hi,
I am development a project using C#.Net. Inside application, it needs to
print labels on different Zebra label printers on the network. I used a shell
script, but it only worked on the server machine locally. Anybody knows how
to do it?
Thanks,
Peng
Paul, could you send me one copy of that sample code? I just began to
learn C#, but my boss want me to write zpl program......I searched for
long time, and still no idea with this issue......So , could you give
me a hand?
--
Kain
------------------------------------------------------------------------
Posted via http://www.codecomments.com
------------------------------------------------------------------------
Hi Paul. Would you please send me a sample of your code? I would
really appreciate it.
--
ctwilliams
------------------------------------------------------------------------
Posted via http://www.codecomments.com
------------------------------------------------------------------------
Paul,
help me please,send me your code,i'm stuck on how to print label to
zebra printer form asp.net!
thank you
ctwilliams wrote: *Hi Paul. Would you please send me a sample of your code? I would
really appreciate it. *
--
caro
------------------------------------------------------------------------
Posted via http://www.codecomments.com
------------------------------------------------------------------------
Hi Paul,
Would you please send me a sample of your code? I would really
appreciate it.
Thanks,
Robert Z.
MCSD
--
rzey
------------------------------------------------------------------------
Posted via http://www.codecomments.com
------------------------------------------------------------------------
Hi Paul,
Could you also send me a sample of your code please? I would really
appreciate it.
--
khtee
------------------------------------------------------------------------
Posted via http://www.codecomments.com
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