C# How to detect that which thread is using my function

Question

I have three threads in my program, one function and 5 .txt files

The function randomly select a file and writes something in it

now my problem is to detect that which thread is use which file

I want show in a rich textbox something like this:

thread one add in 2.txt

thread three add in 1.txt

thread three add in 5.txt

thread two add in 3.txt

....

Edit

I use Thread.CurrentThread.ManagedThreadId.ToString() like this:

case 4:
                        if (c4 >= 5)
                        {
                            c44 = true;
                            test();
                        }
                        else
                        {
                            this.Invoke(new MethodInvoker(delegate()
                            {
                                richTextBox1.Text += "\n\n4--->" + Thread.CurrentThread.ManagedThreadId.ToString() + "\n\n";
                            }));
                            writefile(t4);
                        }
                        c4++;
                        test();
                        break;

case 4 means my thread is writting in 4.txt

`my problem is to detect that which thread is use which file` - this is [`Y` problem](http://meta.stackexchange.com/q/66377) and what is `X` ? — Sinatr, Jan 05 '15 at 10:29
the file is select in a switch case the problem is which thread is in the for example case 2... — samin panahi, Jan 05 '15 at 10:33
This will give you a unique thread id: `System.Threading.Thread.CurrentThread.ManagedThreadId`. — John, Jan 05 '15 at 10:34

ZoomVirus · Accepted Answer · 2015-01-05T10:47:20.660

2

using Thread.currentThread you can tell which thread is running the function

string temp = System.Threading.Thread.CurrentThread.ManagedThreadId.ToString();

edited Jan 05 '15 at 10:47

answered Jan 05 '15 at 10:29

ZoomVirus

615
7
22

how can I use it? I'm beginner in threading!!! – samin panahi Jan 05 '15 at 10:31
1

@ZoomVirus: Pretty useless to always print "System.Threading.Thread", don't you think? – John Jan 05 '15 at 10:36
2

@codemonkey well it gives a good indication to a beginner as to where to look for this function... – Andrew Savinykh Jan 05 '15 at 10:50
I use Thread.CurrentThread.ManagedThreadId.ToString(); but it always show 8 !!! – samin panahi Jan 05 '15 at 11:00
@saminpanahi if you get the same number each time it is the exact same thread each time – ZoomVirus Jan 05 '15 at 11:46

C# How to detect that which thread is using my function

1 Answers1