Counting and comparison of words

Question

1.00/5 (1 vote)

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Hello:
I am trying to program this in VB.NET. I am relatively new to programming
I have two text files
Text file 1:
a1
a1
b1

Text file 2:
a1
b1

I need to report that one of 'a1's is deleted in text file 2
Any help is appreciated !

Thanks

What I have tried:

Hello:
I am trying to program this in VB.NET. I am relatively new to programming
I have two text files
Text file 1:
a1
a1
b1

Text file 2:
a1
b1

I need to report that one of 'a1's is deleted in text file 2
Any help is appreciated !

Thanks

Posted 19-Apr-16 14:09pm

Member 12471735

Updated 19-Apr-16 21:18pm

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Comments

ZurdoDev 19-Apr-16 20:11pm

Start by using System.File, https://msdn.microsoft.com/en-us/library/system.io.file(v=vs.110).aspx.

Read in the text and start comparing line by line.

Member 12471735 20-Apr-16 19:23pm

Hello:
This is what I had tried before posting here
Logic was to count number of instances in file 1 and store it an array and do the same in file 2
Finally compare these two arrays for each line item
I know it is such a round about and a very bad logic

I then tried the following code which I found in one of the forums

Dim tosearch As New System.IO.StreamReader(TextBox1.Text)
Dim searchin = IO.File.ReadAllText(TextBox1.Text)
Dim search As String
search = tosearch.ReadLine

Do While Not tosearch Is Nothing
Dim matchquery = From Word In searchin
Where Word = search
Select Word

Dim count As Integer = matchquery.Count()
'MsgBox(count)
Loop

PIEBALDconsult 19-Apr-16 21:14pm

http://www.codeproject.com/script/Awards/View.aspx?cid=358

Patrice T 19-Apr-16 22:50pm

What have you done ?
Looks like HomeWork.

Member 12471735 20-Apr-16 19:24pm

Hello:
I just posted what I had tried..
It is not a homework

Sergey Alexandrovich Kryukov 19-Apr-16 23:04pm

My note may surprise you: no, you did not define what should be done. An example is not a definition.
Now, you are not telling us what you have trying, you only describe what you have tried. Can you see the difference? What you write is useless. Show your code. But first, strictly defined the requirements — it will give you some 80% of your solution.
—SA

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Praneet Nadkar · Answer 1 · 2016-04-19T21:18:00

Solution 1

HI,

try this:

C#

Dim directory As [String] = "C:\Whatever\"
Dim linesA As [String]() = File.ReadAllLines(Path.Combine(directory, "FileA-Database.txt"))
Dim linesB As [String]() = File.ReadAllLines(Path.Combine(directory, "FileB-Database.txt"))

Dim onlyB As IEnumerable(Of [String]) = linesB.Except(linesA)

File.WriteAllLines(Path.Combine(directory, "Result.txt"), onlyB)

Posted 19-Apr-16 21:18pm

Praneet Nadkar

Comments

Member 12471735 20-Apr-16 19:45pm

Hi:
Thanks for your help
The output of this code would be
a1
b1
which is the difference between the two files
I also want to print that one a1 is deleted
Hope it makes sense on what am looking for