Comment Feed for Channel 9 - While Iterations and Reading Data from a Text File - 11 http://ak.channel9.msdn.com/ch9/f425/932f30c8-04ac-405a-aba6-9f9f0008f425/11VBWhileIterationsandReadingDatafromaTextFile_100_ch9.jpg Channel 9 - While Iterations and Reading Data from a Text File - 11 In this lesson we'll both learn a new type of iteration statement (While) and will learn how to utilize the StreamReader class to stream data from a file to the Console window. Additionally, we'll learn how to add new files to our project, how to set properties of our file using the Properties window, how to add a using statement as a means of resolving a class name referenced in our code to the namespace in which it is defined, and more. Download the source code for While Iterations and Reading.... en Mon, 20 May 2013 04:37:57 GMT Mon, 20 May 2013 04:37:57 GMT Rev9 Re: While Iterations and Reading Data from a Text File - 11 very intuitive, nice explanation
wishes from Morocco

posted by karim

]]> http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634577596610665104 Thu, 24 Nov 2011 19:27:41 GMT http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634577596610665104 karim Re: While Iterations and Reading Data from a Text File - 11 open.

posted by golnazal

]]> http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634749292978366817 Sun, 10 Jun 2012 12:48:17 GMT http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634749292978366817 golnazal Re: While Iterations and Reading Data from a Text File - 11 (btw - enjoying the vid's - going to be excellent resources for my students)

Would it have been "better" (more obvious) to use a "do until IsNothing(line) ... loop" construct rather than the "while ... end while" ? Or perhaps even the "do ... loop until IsNothing(line)" ?

The "benefit" would be the immediate removal of the "double-negative", which, to be honest, as a vet of 4 decades of coding still trips me up occasionally ;') I know my students struggled with it just last week, hence why it is still "fresh" in my mind :)

Kind regards,

Harry

posted by harry

]]> http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634749651740614981 Sun, 10 Jun 2012 22:46:14 GMT http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634749651740614981 harry Re: While Iterations and Reading Data from a Text File - 11 @harry:  Great, great tip!  You're right, I probably could have written than using a different looping structure and made it a "positive" rather than a double-negative.  Smiley  Thank you and best wishes to your students!

posted by BobTabor

]]> http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634751349252684658 Tue, 12 Jun 2012 21:55:25 GMT http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634751349252684658 BobTabor Re: While Iterations and Reading Data from a Text File - 11 posted by Rick

]]> http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634817822156689327 Tue, 28 Aug 2012 20:23:35 GMT http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634817822156689327 Rick Re: While Iterations and Reading Data from a Text File - 11 I was looking for an open thread to thank you on previous 10 tutorials but all threads were closed....finally got the opportunity ...Thanks for creating tutorials that are so simple yet teaches you a lot...are there videos for WinForms apps too using VB..if yes plz share the link..I'll be very grateful to you..well that is already I'm.

posted by ZeroShek

]]> http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634845207302457503 Sat, 29 Sep 2012 13:05:30 GMT http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634845207302457503 ZeroShek Re: While Iterations and Reading Data from a Text File - 11 posted by Beth

]]> http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634849724917845512 Thu, 04 Oct 2012 18:34:51 GMT http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634849724917845512 Beth Re: While Iterations and Reading Data from a Text File - 11 Thank you for this excellent series, a great resource.

posted by meldoc

]]> http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634850660973577014 Fri, 05 Oct 2012 20:34:57 GMT http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634850660973577014 meldoc Re: While Iterations and Reading Data from a Text File - 11 coded like this:
Dim myReader As StreamReader = New StreamReader("values.txt")

Dim line As String = ""
Do Until IsNothing(line)
line = myReader.ReadLine()
Console.WriteLine(line)
Loop

myReader.Close()
Console.ReadLine()
The program ran I.E. gave the correct output to the display, but with following errors:

A first chance exception of type 'System.IndexOutOfRangeException' occurred in UnderstandingArrays.exe
A first chance exception of type 'System.IndexOutOfRangeException' occurred in UnderstandingArrays.exe
A first chance exception of type 'System.IO.FileNotFoundException' occurred in mscorlib.dll

I realize the lesson was on using the While()...IsNothing but as wondering what else is wrong with my code.

posted by Kent Haunschild

]]> http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634913674306374284 Mon, 17 Dec 2012 18:57:10 GMT http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634913674306374284 Kent Haunschild Re: While Iterations and Reading Data from a Text File - 11 @Rick: Agreed.

@ZeroShek:  Thanks!  I'm sure there are videos out there, but not by me.  Sorry!

@Beth: Ah, thanks Beth!

@meldoc: Thank you!

@Kent Haunschild: Hi!  check this out ... it uses Do ... Loop Until properly:

http://msdn.microsoft.com/en-us/library/aa720461(v=vs.71).aspx

posted by BobTabor

]]> http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634923410359076777 Sat, 29 Dec 2012 01:23:55 GMT http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634923410359076777 BobTabor Re: While Iterations and Reading Data from a Text File - 11 posted by jueban

]]> http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634925391138511436 Mon, 31 Dec 2012 08:25:13 GMT http://channel9.msdn.com/Series/Visual-Basic-Development-for-Absolute-Beginners/While-Iterations-and-Reading-Data-from-a-Text-File-11#c634925391138511436 jueban