In this tutorial, we will take a look at thread synchronization with Monitor and Lock in C#. In this post, I showed how to start new threads to execute code in parallel. However, when you start using threads what can happen is that two threads will access the same resources at the same time. One thread might modify a variable before another thread is done executing. This can, of course, cause errors. To prevent this from happening we have to lock the resources in question and prevent other threads from using them until the current thread is done executing. We can do this by either using the Monitor class or the lock keyword. These two approaches are functionally identical. The only difference (as you will be able to see in the code below) is that lock is more compact and easier to use.

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In this tutorial, we will take a look at event arguments in C#. Event arguments allow you to pass data(from publisher to subscriber) with the event when it is triggered. To return data with an event you must make a class that inherits from the EventArgs class. In this new derived class you can add the properties you want to send. Then you return this EventArgs child class with the event.

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In this tutorial, we will see how to exchange thread data by using an object in C#. This post is very similar to this post I already made about sending/receiving data to/from a thread. The only difference is that here an object will be used for the data. To pass data into the thread we will create a class and make two properties one for the input data and one for the callback delegate. When an instance of the class is being created the input data and the callback delegate must be passed into the constructor. After the object has been created its doWork() method can be started as a new thread.

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In this tutorial, we will see how to pass/get data to/from a thread in C#. To pass data into the thread we will simply pass it as an input parameter to the method that is being started as a new thread. To get the data from the thread a delegate callback method will be used. First, we will make a regular method that takes in an input parameter. Then we will make a delegate and make it point to this method. Finally, the delegate will be passed as an input parameter to the method that is being started as a new thread. When the child thread is done executing it will call the callback method that is located in the main thread and pass it the result as an input parameter. This is how we will be able to get the result from the child thread back into the main one.

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In this tutorial, we will take a look at threads in C#. To explain what a thread is let’s first start off with the explanation of what a process is. A process is an instance of your application. The OS will assign it a chunk of virtual memory, execution context(program counter, registers, PID, …) and resource handles.

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In this tutorial, we will take a look at events in C#. A class(subscriber class) can subscribe to an event of another class(publisher class). The publisher class notifies the subscriber class every time the event occurs. This works by using delegates. The subscriber will pass its delegate to the publisher class to “make a subscription” to its event. When the event occurs the publisher will call the delegate(callback method) that was provided to it by the subscriber when it “subscribed” to the event. This is how (for example button press event) events work in .NET. This principle of operation is also called the observer pattern.

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In this tutorial, we will take a look at delagates in C#. A delegate is a pointer to a method(basically an indirect call to the method). Delegates can be passed as input parameters to other methods. A benefit of this is that it provides flexibility. Such a method can then use the passed in delegate to call another method(callback method). This is actually the way events work.

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In this tutorial, we will see how to use the Open File Dialog in WFA C# apps. In this example, I will use a WFA application. If you just want to know how to create/read/write files check out this example with a console application.

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In this tutorial, we will see how to write and read files in C#. In this example, I will use a console application. If you want to know how to open a file dialog and select/create a file in a WFA application see this post. For WPF applications see this post.

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