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please write two functions that add\remove a line from file<br />
the line is selected in a list box, and the function search this line in the text file and add\remove it. 
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please write two functions that add\remove a line from file
the line is selected in a list box, and the function search this line in the text file and add\remove it. 

VB files

Visual Basic is Microsoft’s event-driven programming language and integrated development environment (IDE) for its Component Object Model (COM) programming model. It is relatively easy to learn and use because of its graphical development features and BASIC heritage. It has been replaced with VB.NET, and is very similar to VBA (Visual Basic for Applications), the programming language for the Microsoft Office product line.