CODEWITHSUNDEEP
c#multithreading
Anthony Bonarrigo
Anthony Bonarrigo

Reputation: 180

Cannot get ThreadStart and ParameterizedThreadStart to function correctly

I am trying to learn multithreading in C#. I have a HW assignment in which we are using the producer/consumer example of threading from MDSN (Found here)

From my understanding, ParameterizedThreadStart is the "same" as ThreadStartexcept for ParameterizedThreadStarthaving an Objectparameter.

I have the following method, which I want to create a ParameterizedThreadStart delegate with:

public void ThreadProdRun(int amount)
{
   cell.WriteToCell(amount, ref quantity);
}

And my call to ParameterizedThreadStart is as follows:

Thread producer = new Thread(new ParameterizedThreadStart (prod.ThreadProdRun));

Which doesn't work because the overloads do not match. I cannot use an object in place of the parameter, or int because int is a struct in C#.

Upvotes: 0

Views: 112

Answers (1)

opewix
opewix

Reputation: 5083

Look at ParameterizedThreadStart signature by pressing F12 in visual studio.

It is public delegate void ParameterizedThreadStart(object amount);

Your ThreadProdRun method must have object as parameter

public void ThreadProdRun(object amount)
{
   cell.WriteToCell((int)amount, ref quantity);
}

EDIT Example with lambda expression and closure

int amount = 1;
Thread t = new Thread(() =>
{
    Console.WriteLine(amount);
});

Upvotes: 1

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