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Start your free trialDominik Huber
4,631 PointsCan someone please explain this to me in more details? Console.WriteLine(Console.ReadLine()) makes no sense to me.
HI guys,
I have a few questions.
So the first code I don't get is this:
What exactly does the file.FullName return? Documentation says it returns the full path of the file. But why? I think we already have the full path with this code:
fileName = Path.Combine(directory.FullName, "data.txt");
Next question:
Console.SetIn(reader); --> What is this doing exactly? It passes in the "Stream" and does what exactly?
So whenever I call Console.ReadLine() now I can't write anything to it, because the "StreamReader" passes in the string from the data.txt file? And it gets passed in every time I call Console.ReadLine(), until I close the stream? Please if someone could explain me this like I'm five would be very nice.
Thx guys
3 Answers
Steven Parker
231,269 PointsThe "SetIn" method determines where the input will come from. It's like setting a switch. If you choose a stream, it will take the input from the stream instead of from typing to the actual console.
If you want stream input and console input you would not redirect the console. Instead you can use the read methods of the stream itself.
James Churchill
Treehouse TeacherDominik,
In order to retrieve the information for the "data.txt" file, we need the full path to that file, which is what this code is doing:
var fileName = Path.Combine(directory.FullName, "data.txt");
Then, after we've retrieved the file information and verified that the file exists, we can use the FileInfo object's FullName
property to get the full path to the file. As you've noted, we already had the value on hand in the fileName
variable, so using the FileInfo FullName
property later on is a bit redundant.
I hope that helps.
Thanks ~James
Andrei Li
34,475 PointsThank you, Steven! You are the person who adds value to Treehouse!
Andrei Li
34,475 PointsAndrei Li
34,475 PointsSo, if I want back to read a line from the keyboard I have to switch it back to keyboard input. Is it correct? What command switches it back to keyboard input?
Steven Parker
231,269 PointsSteven Parker
231,269 PointsAs I said, it would probably make more sense to use the stream methods for input instead of redirecting if you need it back later. But you could save the original and restore it later if necessary: