使用LINQ从进程[]获取字符串[]或进程ID. [英] Get string[] or process id's from process[] using LINQ

问题描述

我打开了五个 notepad.exe.现在，我想知道与每个notepad.exe相关联的所有进程ID.

I have opened five notepad.exe's. Now I want to know all the process id's associated with each notepad.exe.

我知道我可以通过以下方式检索记事本进程列表:

I know I can retrieve list of notepad processes by:

Process []进程= Process.GetProcessesByName("notepad");

Process[] processes = Process.GetProcessesByName("notepad");

但是现在我想要使用LINQ的那些记事本实例的进程ID的string [].我怎么做?我知道我可以创建string []并使用foreach循环填充string []，但我想知道使用LINQ.

But now I want string[] of process Id's of those notepad instances using LINQ. How do I do that? I know i can create string[] and using foreach loop populate the string[] but I would like to know using LINQ.

推荐答案

您可以使用:

Process[] processes = Process.GetProcessesByName("notepad");
string[] ids = processes.Select(p => p.Id.ToString()).ToArray();

但是，我质疑是否需要将其放入 string [] 类型.最好保留 Process.Id 值作为整数:

However, I question the need to put this into a string[] type. It might be better to just leave the Process.Id values as integers:

Process[] processes = Process.GetProcessesByName("notepad");
var ids = processes.Select(p => p.Id);
foreach(int processId in ids)
{
   // Do something with each processId
}

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