How do I add a file to a project and find and replace characters then save as new file?

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I am using Visual Studio community edition 2017 and I am trying to create a script that adds a file, loops through the file line by line and find a certain symbols before some letters, for example ISA** change those symbols then save the whole file as a new text file. I am new to the visual studio and c# world and have no idea where to start. Would this just be a console app?

I think a stream is the correct way to accomplish this task but I just can't seem to find the right way to make this work.

What I have tried:

I have tried

string text = File.ReadAllText(@"C:path\to\file");
text = text.Replace("|","*");
File.WriteAllText(@"c:\EDITest.txt", text);

string data = File.ReadAllText("C:\path\to\file")
    .Replace("|", "*");
byte[] bytes = Encoding.ASCII.GetBytes(data);
Stream s = new MemoryStream(bytes);

I know that neither of these will complete the requirement but I keep getting errors. If someone could just point me in the correct direction to start this I would be so appreciative!!

thank you in advance for any comments or advice

Posted 16-Aug-18 7:34am

Member 13935962

Updated 16-Aug-18 10:35am

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Answer 1 · 2018-08-16T08:05:00

Start off by not trying to store data in the root directory of your C: drive - in modern OSes that folder is write protected (for security, so that viruses find it harder to change how your system starts up) so the chances are that one of your errors is an access violation exception, which is basically saying "You can't write to that file".

Instead, create a folder for your test data and set it's persmisions to "all users" (or for the more advanced version, see here: Where should I store my data?[^])

Other than that, the first version should work - if your path is valid, which the example probably isn't - try inserting a leading "\" to make the path absolute:

C#

string text = File.ReadAllText(@"C:\path\to\file");

If you are getting some other error(s) you need to explain exactly what they are!

Member 13935962 · Answer 2 · 2018-08-16T10:35:00

string text = File.ReadAllText(@"C:\Users\file\One\Desktop\path");
File.LoopFullPath
ISA_Postition =  InStr(linetext, "ISA")
ISA_Delimiter = InStr(linetext, ISA_Position+3, 1)
ISAstandardDel =  "~"

GS_Postition =  InStr(linetext, "GS")
GS_Delimiter = InStr(linetext, GS_Position-1, 1)
ISAstandardDel =  "\"

File.WriteAllText(@"C:\Users\test_shared_folder\DateTime.Now.txt", text);

any suggestions??

the current code gives me the following errors
LoopFullPath doesn't exist in the type "file"
InStr, linetext, ISAstandardDel ext... doesn't exist in the current context

do I add these as classes to define them??

How do I add a file to a project and find and replace characters then save as new file?

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How do I add a file to a project and find and replace characters then save as new file?

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