Удаляем принтер через WMI: Справочник по C#

public static bool DeletePrinter(string sPrinterName)
{
ManagementScope oManagementScope = new ManagementScope(ManagementPath.DefaultPath);
oManagementScope.Connect();

SelectQuery oSelectQuery = new SelectQuery();
oSelectQuery.QueryString = @"SELECT * FROM Win32_Printer WHERE Name = '" +
sPrinterName.Replace("\", "\\") + "'";

ManagementObjectSearcher oObjectSearcher =
new ManagementObjectSearcher(oManagementScope, oSelectQuery);
ManagementObjectCollection oObjectCollection = oObjectSearcher.Get();

if (oObjectCollection.Count != 0)
{
foreach (ManagementObject oItem in oObjectCollection)
{
oItem.Delete();
return true;
}
}
return false;
}

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