public static JOB_INFO_2 GetJobInfo(string printerName, int jobId)
{
try
{
IntPtr _printerHandle = IntPtr.Zero;
// get printer handle
_printerHandle = GetPrinterHandle(printerName);
if (_printerHandle == IntPtr.Zero)
{
return(null);
}
//Get the JOB details from GetJob()
JOB_INFO_2 jobInfo = GetJobInfo2(_printerHandle, jobId);
// close printer
bool res = ClosePrinter(_printerHandle);
// return job info
return(jobInfo);
}
catch (AccessViolationException)
{
}
catch (Exception)
{
}
return(null);
}
/// <summary>
/// Gets job info (2) of the specified printer's job id.
/// </summary>
/// <param name="_printerHandle">printer handle</param>
/// <param name="jobId">job id</param>
/// <returns>job info (2)</returns>
private static JOB_INFO_2 GetJobInfo2(IntPtr _printerHandle, int jobId)
{
try
{
JOB_INFO_2 info = new JOB_INFO_2();
Int32 BytesWritten = default(Int32);
IntPtr ptBuf = default(IntPtr);
//Get the required buffer size
if (!GetJob(_printerHandle, jobId, 2, ptBuf, 0, ref BytesWritten))
{
if (BytesWritten == 0)
{
throw new Exception("GetJob for JOB_INFO_2 failed on handle: " + _printerHandle.ToString() + " for job: " + jobId);
}
}
// Allocate a buffer the right size
if (BytesWritten > 0)
{
ptBuf = Marshal.AllocHGlobal(BytesWritten * 2);
}
if (!GetJob(_printerHandle, jobId, 2, ptBuf, BytesWritten, ref BytesWritten))
{
Marshal.FreeHGlobal(ptBuf);
throw new Exception("GetJob for JOB_INFO_2 failed on handle: " + _printerHandle.ToString() + " for job: " + jobId);
}
else
{
info = new JOB_INFO_2();
Marshal.PtrToStructure(ptBuf, info);
//Fill the devmode structure
IntPtr ptrDevMode = new IntPtr(info.LPDeviceMode);
Marshal.PtrToStructure(ptrDevMode, info.dmOut);
}
// Free the allocated memory
Marshal.FreeHGlobal(ptBuf);
// return job info
return(info);
}
catch (AccessViolationException)
{
}
catch (Exception)
{
}
return(null);
}
/// Methods
#region Methods
/// <summary>
/// Gets the copy count of the specified printer's job id.
/// </summary>
/// <param name="printerName">printer name</param>
/// <param name="jobId">job id</param>
/// <returns>copy count</returns>
public static int GetCopyCount(string printerName, int jobId)
{
try
{
// get job info
JOB_INFO_2 ji = GetJobInfo(printerName, jobId);
// get copy count
int copy = ji.dmOut.dmCopies;
ji = null;
return(copy);
}
catch
{
return(-1);
}
}