Category Archives: classes

Make a class define and raise events in C#

This example uses a BankAccount class to manage a bank account (and to show how to define and raise events). If the program tries to remove more money from the account than its current balance, the BankAccount object raises an … Continue reading

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Convert an array of bytes into an integer and back in C#

The BitConverter class provides static methods that let you convert various data types to and from arrays of bytes. (I suppose it might have made more sense to call it the ByteConverter class.) You can use those methods to convert … Continue reading

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Find class ancestors in C#

The example Find classes that implement an interface or that are descendants of a given class in C# shows how to find a list of classes that are descendants of a class or interface. This example uses similar code to … Continue reading

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Find classes that implement an interface or that are descendants of a given class in C#

This example lets you find classes that are part of an inheritance or implementation hierarchy. When you enter a class or interface name and click Find, the example uses the following code to search the currently loaded assemblies for classes … Continue reading

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List a program’s loaded assemblies in C#

The key to this example is the following ListAssemblies method. // List the assemblies. private void ListAssemblies() { lblNumAssemblies.Text = “”; lstAssemblies.Items.Clear(); Cursor = Cursors.WaitCursor; Refresh(); foreach (Assembly assembly in AppDomain.CurrentDomain.GetAssemblies()) { lstAssemblies.Items.Add(assembly.GetName().Name); } // Display the number of assemblies. … Continue reading

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Use Array methods in C#

The example Sort and search arrays in C# shows how to use two useful Array methods: Sort and BinarySearch. This example demonstrates some other useful Array methods. For simplicity, this example uses arrays of characters to demonstrate the Array methods, … Continue reading

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Create a class outside of any namespace statement in C#

When you create a class in C#, Visual Studio automatically puts it inside a namespace statement. If your project’s name is howto_remove_namespace, then by default that namespace is howto_remove_namespace. But did you know that you can create classes outside of … Continue reading

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Make a simple event logger in C#

Usually the debugger lets you examine how a program works quite effectively, but sometimes it’s useful to use an event logger to record events for later study. For example, when you’re working with mouse events, stopping execution at a break … Continue reading

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Give a class default indexer properties in C#

An indexer property is a property that other code can use inside square brackets to access some value provided by the class, much as you can use the index of an array. Unlike an array, a class’s indexer need not … Continue reading

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Use a TextFieldParser to read fixed-width data in C#

This example uses a TextFieldParser object to load fixed-width data from a file that contains names and addresses. Each field has a fixed width. Some records also have ZIP+4 format ZIP codes (for example, 08109-2120) and the program should discard … Continue reading

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