Question

I’ve been searching the net for a while trying to find out how to simply read only lines longer than 0 characters from a .txt file into a listbox in VB. I am using VS 2010 and want to read only lines that contain content into the list box.

For example I want to only read the lines labeled 1.

1
1


1
1

1

Answer 1

You can use a combination of ReadAllLines and LINQ:

ListBox1.DataSource = IO.File.ReadAllLines("file.txt").Where(Function(x) x.Length > 0).ToList

To start at the 3rd line, use Skip:

IO.File.ReadAllLines("file.txt").Skip(2).Where(Function(x) x.Length > 0).ToList