Thread/Event how to excute a method when boolean variable goes true (from other class)

I have one classes that has an array. The code within this class set a bool variable to true (arrayfull=true), I would like to excute a method within other class that process the array.

I would like a independent thread to the set up that automatically response to this event and excute an method (within same namespace).

Please include source code / demo code how this is done.

Thanks

Try this:

using System;

using System.Threading;

namespace MyNameSpace

{

class MyArrayWrapper

{

bool arrayfull;

public bool ArrayFull

{

get { return arrayfull; }

}

int length;

public int Length

{

get { return length; }

}

int?[] myArray; // use nullable type so can tell when all elements have been set

public event Action ArrayFilled;

public MyArrayWrapper(int length)

{

myArray = new int?[length]; // all null by default

this.length = length;

}

public int? this[int index]

{

get

{

if (index >= 0 && index < myArray.Length)

{

return myArray[index];

}

else throw new IndexOutOfRangeException();

}

set

{

if (index >= 0 && index < myArray.Length)

{

myArray[index] = value;

foreach(int? i in myArray)

{

if (i == null) return;

}

arrayfull = true;

if (ArrayFilled != null) ArrayFilled(this); // if full, fire event

}

else throw new IndexOutOfRangeException();

}

class ArrayProcessor

{

public void ProcessArray(MyArrayWrapper maw)

{

for(int i = 0; i < maw.Length; i++)

{

maw[i] = i;

}

class Program

{

static void Main()

{

Thread t = new Thread(Process);

t.Start();

t.Join();

Console.WriteLine("Press any key to exit program");

Console.ReadKey();

}

static void WatchProcessing(MyArrayWrapper maw)

{

Console.WriteLine("arrayfull is now {0}", maw.ArrayFull);

}

static void Process()

{

MyArrayWrapper maw = new MyArrayWrapper(100);

Console.WriteLine("arrayfull is initially {0}", maw.ArrayFull);

maw.ArrayFilled += WatchProcessing; // subscribe to event

ArrayProcessor ap = new ArrayProcessor();

ap.ProcessArray(maw); // process the array

}

1 Reply

Know the answer? Post it — somebody with the same question will find it here.

Vulpes15y ago
Try this:

using System;
using System.Threading;

namespace MyNameSpace
{
class MyArrayWrapper
{
bool arrayfull;

public bool ArrayFull
{
get { return arrayfull; }
}

int length;

public int Length
{
get { return length; }
}

int?[] myArray; // use nullable type so can tell when all elements have been set

public event Action ArrayFilled;

public MyArrayWrapper(int length)
{
myArray = new int?[length]; // all null by default
this.length = length;
}

public int? this[int index]
{
get
{
if (index >= 0 && index < myArray.Length)
{
return myArray[index];
}
else throw new IndexOutOfRangeException();
}

set
{
if (index >= 0 && index < myArray.Length)
{
myArray[index] = value;

foreach(int? i in myArray)
{
if (i == null) return;
}

arrayfull = true;
if (ArrayFilled != null) ArrayFilled(this); // if full, fire event
}
else throw new IndexOutOfRangeException();
}
}

}

class ArrayProcessor
{
public void ProcessArray(MyArrayWrapper maw)
{
for(int i = 0; i < maw.Length; i++)
{
maw[i] = i;
}
}
}

class Program
{
static void Main()
{
Thread t = new Thread(Process);
t.Start();
t.Join();
Console.WriteLine("Press any key to exit program");
Console.ReadKey();
}

static void WatchProcessing(MyArrayWrapper maw)
{
Console.WriteLine("arrayfull is now {0}", maw.ArrayFull);
}

static void Process()
{
MyArrayWrapper maw = new MyArrayWrapper(100);
Console.WriteLine("arrayfull is initially {0}", maw.ArrayFull);
maw.ArrayFilled += WatchProcessing; // subscribe to event
ArrayProcessor ap = new ArrayProcessor();
ap.ProcessArray(maw); // process the array
}
}
}
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