Not possible to get printer status with c#.net?

[trint]

I am told by an experienced c#.net programmer that it is not possible
to get the code to get a printers status. I've been hammering on this
for a week and have combed through hp's web sites and google and
microsoft...not hing for c#. If anyone has a solution, I would
appreciate knowing.
Thanks,
Trint

[Bob Grommes]

This is a function for a printer driver. When you print to a spooler it is
not relevant whether the printer hardware is ready or not.

If you are bypassing the spooler and going direct to hardware for some
reason, then you are probably talking about a Win32 API call that you would
make from C# via P/Invoke.

--Bob

"trint" <tr***********@ gmail.com> wrote in message
news:11******** **************@ c13g2000cwb.goo glegroups.com.. .

I am told by an experienced c#.net programmer that it is not possible
to get the code to get a printers status. I've been hammering on this
for a week and have combed through hp's web sites and google and
microsoft...not hing for c#. If anyone has a solution, I would
appreciate knowing.
Thanks,
Trint

[Willy Denoyette [MVP]]

In general the printer status can be queried using System.Manageme nt and
WMI.

Willy.

"trint" <tr***********@ gmail.com> wrote in message
news:11******** **************@ c13g2000cwb.goo glegroups.com.. .

I am told by an experienced c#.net programmer that it is not possible
to get the code to get a printers status. I've been hammering on this
for a week and have combed through hp's web sites and google and
microsoft...not hing for c#. If anyone has a solution, I would
appreciate knowing.
Thanks,
Trint

[Willy Denoyette [MVP]]

"trint" <tr***********@ gmail.com> wrote in message
news:11******** **************@ c13g2000cwb.goo glegroups.com.. .

I am told by an experienced c#.net programmer that it is not possible
to get the code to get a printers status. I've been hammering on this
for a week and have combed through hp's web sites and google and
microsoft...not hing for c#. If anyone has a solution, I would
appreciate knowing.
Thanks,
Trint

Here is how:

using System;
using System.Manageme nt;
enum PrinterStatus {
Other = 1,
Unknown,
Idle,
Printing,
Warmup,
Stopped,
printing,
Offline
}

public class Wmis {
public static void Main() {
PrinterStatus stat;
if ((stat = GetPrinterStat( "\\\\server\\pr intername")) != 0) // UNC or a
local name
{
Console.WriteLi ne(stat);
}
else
Console.WriteLi ne("Failed to get status");
}
static PrinterStatus GetPrinterStat( string printerDevice)
{
PrinterStatus ret = 0;
string path = "win32_printer. DeviceId='" + printerDevice + "'";
using (ManagementObje ct printer = new ManagementObjec t(path))
{
printer.Get();
PropertyDataCol lection printerProperti es = printer.Propert ies;
PrinterStatus st =
(PrinterStatus) Convert.ToInt32 (printer.Proper ties["PrinterSta tus"].Value);
ret = st;
}
return ret;
}
}
Willy.

[trint]

I will try this...
Thanks,
Trint

[trint]

Willy,
How can I make listBox1 visible? I changed your code slightly from:
if ((stat = GetPrinterStat( "\\\\server\\pr intername")) != 0)
{
Console.WriteLi ne(stat);
}
To:
{
Form1.listBox1. Items.Add(stat) ;
}
so that I can get the error messages back in windows, but I get this
error message at compile:
'GetPrinterStat us1.Form1.listB ox1' is inaccessible due to its
protection level
How do I change the listBox's protection level?
Thanks,
Trint

[trint]

Ok,
Here is the fix to make it work in Windows:

public class Form1 : System.Windows. Forms.Form
{
....
protected System.Windows. Forms.ListBox listBox1;
....
....
public class Wmis: Form1
{
....
....
Wmis f1 = new Wmis();
f1.listBox1.Ite ms.Add(stat);

The only thing is, I wish that I could get error codes like 'tray 2
empty' or 'tray 3 empty' or 'out of toner'.
Any suggestions?
Thanks,
Trint


trint wrote:

Willy,
How can I make listBox1 visible? I changed your code slightly from:
if ((stat = GetPrinterStat( "\\\\server\\pr intername")) != 0)
{
Console.WriteLi ne(stat);
}
To:
{
Form1.listBox1. Items.Add(stat) ;
}
so that I can get the error messages back in windows, but I get this
error message at compile:
'GetPrinterStat us1.Form1.listB ox1' is inaccessible due to its
protection level
How do I change the listBox's protection level?
Thanks,
Trint

[Willy Denoyette [MVP]]

Check the WMI info in MSDN. The class to search for is win32_printer.
Some printer manufactures supply printer drivers that fill the
ExtendedPrinter Status, DetectErrorStat e and ExtendedDetectE rrorState
property, some don't care at all about WMI.

Willy.
"trint" <tr***********@ gmail.com> wrote in message
news:11******** *************@c 13g2000cwb.goog legroups.com...

Ok,
Here is the fix to make it work in Windows:

public class Form1 : System.Windows. Forms.Form
{
...
protected System.Windows. Forms.ListBox listBox1;
...
...
public class Wmis: Form1
{
...
...
Wmis f1 = new Wmis();
f1.listBox1.Ite ms.Add(stat);

The only thing is, I wish that I could get error codes like 'tray 2
empty' or 'tray 3 empty' or 'out of toner'.
Any suggestions?
Thanks,
Trint


trint wrote:

Willy,
How can I make listBox1 visible? I changed your code slightly from:
if ((stat = GetPrinterStat( "\\\\server\\pr intername")) != 0)
{
Console.WriteLi ne(stat);
}
To:
{
Form1.listBox1. Items.Add(stat) ;
}
so that I can get the error messages back in windows, but I get this
error message at compile:
'GetPrinterStat us1.Form1.listB ox1' is inaccessible due to its
protection level
How do I change the listBox's protection level?
Thanks,
Trint