Visual Basic 2015 Unleashed

Using..End Using Statement

As an alternative to directly invoking Dispose, you can take advantage of the Using..End Using statement. This code block automatically releases and removes from memory the object that it points to, invoking Dispose behind the scenes for you. The following code shows how you can open a stream for writing a file and ensure that the stream will be released even if you do not explicitly close it:

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Using dp As New IO.StreamWriter("C:\TestFile.txt", False)    dp.WriteLine("This is a demo text")End Using

Notice how you simply create an instance of the object via the Using keyword. The End Using statement causes Dispose to be invoked on the previously mentioned instance. The advantage of Using..End ...