[VB.NET Tips] assignment operator must pay attention

Assignment operator is a statement that can not be used in the expression, the expression is equal to the equal sign indicates the assignment instead.

On example:

    Dim x As Integer
    Dim y As Object

    x = 5
    y = x = 5

    Console.WriteLine(y)
    Console.Read()

In this example, the first statement assigns 5 x, the second statement, the first equal sign is the assignment. And the second equal sign is the same.
Thus the statement first calculating x is equal to 5, and the results (True) to the variable y.

This is important to note, otherwise, there may be side effects can not be captured in the code.