How to Read and write to excel and remove unwanted characters from the excel

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2.53/5 (3 votes)

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Hi Folks,

I would to build an appplication which reads excel, writes changes to the new excel:
some requests are:
I have an Excel(.csv) which contains lot of unwanted characters like
single quotes, double quotes, comma. So I want to remove all these unawanted charaters for the excel(.csv). And update the excel(.csv) and store new excel(.csv).

I have many .csv files with unwanted characters so i want to make it automated using C# code

Can any one please help me on this.

Posted 24-Jun-14 6:10am

apr1234

Updated 24-Jun-14 6:38am

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[no name] 24-Jun-14 12:21pm

Help you with what? You would have to have some sort of a problem first.

[no name] 24-Jun-14 13:41pm

No. We don't write code to order here and you know that. How about YOU write some code and then if you have a specific problem, come back and ask a specific question.

apr1234 24-Jun-14 14:15pm

Not code... i was asking for some helpful links!!
I tried but i was not able!!

[no name] 24-Jun-14 15:50pm

Again... help with what? We can't see that you have tried anything at all. You know a CSV file is just text, right? So are you telling us that you are unable to open a text file and read text from it? This is not the do my research for me and give me links section. Please go read the FAQ for how to ask a question. Especially #2.

apr1234 2-Jul-14 14:53pm

Hm... Really? :P

[no name] 2-Jul-14 14:58pm

Yes and enda trying to help you. No effort and expect people to do your work for you.

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 24-Jun-14 12:43pm

What codes you have tried? Where is the exact issue?

apr1234 24-Jun-14 14:14pm

I have tried a lot... issue is to import data to DB from excel

PIEBALDconsult 24-Jun-14 12:46pm

You can do that very easily, but then it might no longer be a CSV.
What are you actually trying to achieve?

apr1234 24-Jun-14 14:11pm

I am having data in an excel of .csv type... It have some unwanted data.. I want to remove that unwanted data and insert that into DB. Because db doesnot accept such characters

Sanju Rao 24-Jun-14 14:03pm

you have to use LinqToExcel dll. download from nuget u wil be able to do all sort of operation on workbook. http://www.codeproject.com/Articles/659643/Csharp-Query-Excel-and-CSV-Files-Using-LinqToExcel

apr1234 24-Jun-14 14:08pm

Thank you for the link... we will explore this!!

Sanju Rao 24-Jun-14 14:34pm

u WC :)

Sanju Rao 24-Jun-14 14:42pm

can you tell me how is your excel? reading and writing can be used by LinqToExcel. Removing redundant data could be analysed only after seeing the data in your excel sheet.

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Maciej Los · Accepted Answer · 2014-06-24T08:50:00

PIEBALDconsult wrote:

You can do that very easily, but then it might no longer be a CSV.

It's true.

I'd suggest you to use ADO.NET to read and write *.csv files: Accessing Microsoft Office Data from .NET Applications[^]
How To Use ADO.NET to Retrieve and Modify Records in an Excel Workbook With Visual Basic .NET[^] - i know it's VB.NET, but VB.NET is quite similar to C#.

In case you'll still want to change some values, have a look here: Range.Replace method[^]

Sergey Vaselenko · Accepted Answer · 2014-06-24T11:15:00

You may use a powerful command line tool, Microsoft Log Parser 2.2[^], to transform CSV and other files to a desired file.

Also you may try the gwebcmd[^] command line tool.

It allows you to transform different csv formats into several unified formats for futher import into databases.

For example, to change the separator, run:

gwebcmd texttocsv src.csv dest.csv /separator=;

In addition, you may combine multiple csv files into a one big file before importing to reduce import time.

Sanju Rao · Accepted Answer · 2014-06-24T08:35:00

Solution 1

you have to use LinqToExcel dll. download from nuget u wil be able to do all sort of operation on workbook. http://www.codeproject.com/Articles/659643/Csharp-Query-Excel-and-CSV-Files-Using-LinqToExcel

Posted 24-Jun-14 8:35am

Sanju Rao

How to Read and write to excel and remove unwanted characters from the excel

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