[.NET] 用C#取得列表机的相关资讯

查询列表机状态,我利用这个查询自己机子上HP列表机的状态

string printerName = "HP"; string query = string.Format("SELECT * from Win32_Printer WHERE Name LIKE '%{0}%'", printerName); ManagementObjectSearcher searcher = new ManagementObjectSearcher(query); ManagementObjectCollection coll = searcher.Get(); foreach (ManagementObject printer in coll) { foreach (PropertyData property in printer.Properties) { MessageBox.Show(string.Format("{0}: {1}", property.Name, property.Value)); } }

取消print job in print queue,这段代码查找出列表机中的print job,并删除某一个job

public bool CancelPrintJob(int printJobID) { // Variable declarations. bool isActionPerformed = false; string searchQuery; String jobName; char[] splitArr; int prntJobID; ManagementObjectSearcher searchPrintJobs; ManagementObjectCollection prntJobCollection; try { // Query to get all the queued printer jobs. searchQuery = "SELECT * FROM Win32_PrintJob"; // Create an object using the above query. searchPrintJobs = new ManagementObjectSearcher(searchQuery); // Fire the query to get the collection of the printer jobs. prntJobCollection = searchPrintJobs.Get(); // Look for the job you want to delete/cancel. foreach (ManagementObject prntJob in prntJobCollection) { jobName = prntJob.Properties["Name"].Value.ToString(); // Job name would be of the format [Printer name], [Job ID] splitArr = new char[1]; splitArr[0] = Convert.ToChar(","); // Get the job ID. prntJobID = Convert.ToInt32(jobName.Split(splitArr)[1]); // If the Job Id equals the input job Id, then cancel the job. if (prntJobID == printJobID) { // Performs a action similar to the cancel // operation of windows print console prntJob.Delete(); isActionPerformed = true; break; } } return isActionPerformed; } catch (Exception sysException) { // Log the exception. return false; } }