C# Tutorial - Read & Write csv file | FoxLearn

How to read and write csv file to DataGridView using CsvHelper in C#. The C# Basics beginner course is a free C# Tutorial Series that helps beginning programmers learn the basics of the C# Programming Language.

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[duanehenry]

What a great tutorial! Absolutely nothing was explained :)

[muziwenhlanhladlamini]

How do I edit content on a existing csv or excel file?

[obaidullah.aleem]

The tutorial is great!
The problem which I face in this program is that when I inserted the data in C# dialog box is not saving the in XL csv format file please fix this problem

[derkthedutchi]

Hi,
The 'studentBindingSource and CSvWriter keep giving an error.
What kind of information do I give those terms?
A variable / type or another format? *

[gabrielf]

The syntax for CSVWriter() and CSVReader() seem to be outdated, does anyone have a solution to make this code still work with few changes?

[AyomipoEphod]

I am unable to find an option to select datasource in the datagridview, what should I do?

[mohdaliff]

i got error could not find installable ISAM, any ideas why?

[nicklodde]

this worked very well Just having a problem when trying to read a saved file.

[vikramjeetsingh]

Everything is working fine for me but for writer.writeheader(typeof());
I want to use the headings of 3 tables in the header so how to do it
i am saving data of 3 tables in the csv file?

[katerose]

The line "var writer = new CsvWriter(sw);" gives me an error at "sw" variable. "Argument 1: cannot convert from 'System.IO.StreamWriter' to 'CsvHelper.ISerializer'". I guess the library was changed... Does anybody know how to fix this?

[nabarajach]

How to solve the error -- CsvWriter doesnot contains a constructor that take 1 arguments

[nabarajach]

'Object reference not set to an instance of an object.'

[tonyl]

Can Someone help me please. I am new to programming and am simply following and repeating what i see in this video. Everything is good until i hit line 53 when it tells me "Non-invocable member 'StreamReader' cannot be used like a method."

[vikeshmishra]

For me write operation is successful but when I am opening the file which I have written. there is nothing in the file. Can anyone tell, what is the issue?

[project.monist]

i have 2 errors with the code.


(write error 1) : System.ArgumentNullException: 'Value cannot be null.
Parametername: writer'


(Read error)2 : CsvHelper.ReaderException: 'You must call read on the reader before accessing its data.'


anybody got any suggestions?

[tusiax]

how to change save format from ", " to ";" ?

[rizahmad]

It Worked for me half way ...But while writing the file i am getting error 'Object reference not set to an instance of an object.') (... as returned null.

[rizahmad]

everything is fine but the problem now, when i am writing th e file i am getting only header not all other data rows ..I tried writer.nextrecord (); its not working, ,giving me same output

[demetriussalas]

Can't seem to get it to work, loads all the rows blank.

[aparupamishra]

Its so blur can anybody else see it..
Or my network.is so poor i cant even recognise😕