[C#]如何取得Process的Owner
筆者最近在做的專案與自己在玩的東西都需要去取出Process的Owner來做些顯示或是判斷，這邊所謂的Owner就是工作管理員中我們所看到的User Name。
這樣的資訊，我們無法透過BCL內建的System.Diagnostics.Process直接取得。而是需要透過WMI取出Win32_Process。
var query = "Select * From Win32_Process Where ProcessID = " + process.Id;
var searcher = new ManagementObjectSearcher(query);
var processObj = searcher.Get().OfType<ManagementObject>().FirstOrDefault();
...
取得Win32_Process後，對其呼叫GetOwner取得對應的Owner就可以了。
像是下面這樣：
var argList = new string[2];
int returnVal = Convert.ToInt32(processObj.InvokeMethod("GetOwner", argList));
if (returnVal == 0)
{
var owner = string.Join(@"\", argList.Reverse().ToArray());
...
}
...
這邊筆者將比較完整的處理整理成函式：
{
var query = "Select * From Win32_Process Where ProcessID = " + process.Id;
var searcher = new ManagementObjectSearcher(query);
var processObj = searcher.Get().OfType<ManagementObject>().FirstOrDefault();
if (processObj == null)
throw new ArgumentException("Process not exists!");
var argList = new string[2];
int returnVal = Convert.ToInt32(processObj.InvokeMethod("GetOwner", argList));
if (returnVal == 0)
{
return string.Join(@"\", argList.Reverse().ToArray());
}
return null;
}
使用時帶入Process就可以取得對應的Owner。
{
Console.WriteLine(GetProcessOwner(Process.GetCurrentProcess()));
}
若要更方便點，也可以將其整理成擴充方法使用。
{
public static string GetProcessOwner(this Process process)
{
var query = "Select * From Win32_Process Where ProcessID = " + process.Id;
var searcher = new ManagementObjectSearcher(query);
var processObj = searcher.Get().OfType<ManagementObject>().FirstOrDefault();
if (processObj == null)
throw new ArgumentException("Process not exists!");
var argList = new string[2];
int returnVal = Convert.ToInt32(processObj.InvokeMethod("GetOwner", argList));
if (returnVal == 0)
{
return string.Join(@"\", argList.Reverse().ToArray());
}
return null;
}
}