Develop Reference

How to import data from Excel to C# Service based database?

Im using C# and Service based database and I need to import some data from Excel to my database ..How could I possibly do this?? Please help. Thanks a lot.

You can open the excel file with the Excel database driver and read it like any other data source, however this means you need the driver, which isn't installed by default.
Download
HowTo
However if the sheet only contains data and doesn't need any calculations, you can unzip the XLSX file, and find sheet1.xml (or whatever it's called in your file), open it in your app like any other XML file and import the data.
This is likely to be a much better long term solution, since MS has been trying to kill off the Access database driver for ages.
Also, it's been a while, but I don't believe MS recommends using the MSDE from within a service.

I would recommend you to use OfficeOpenXml.Core.ExcelPackage or EPPlus to read/write excel files. Bellow is some links to reference
https://www.nuget.org/packages/OfficeOpenXml.Core.ExcelPackage/
https://github.com/JanKallman/EPPlus
https://www.c-sharpcorner.com/article/import-and-export-data-using-epplus-core/
https://tedgustaf.com/blog/2012/create-excel-20072010-spreadsheets-with-c-and-epplus/
http://www.talkingdotnet.com/import-export-xlsx-asp-net-core/
https://toidicodedao.com/2015/11/24/series-c-hay-ho-epplus-thu-vien-excel-ba-dao-phan-1/
http://www.zachhunter.com/2015/11/xlsx-template-with-epplus-and-web-api-save-as-xlsx-or-pdf/

export dynamic html table to excel

i am generating dynamic html table using web browser control . And now, im having problem to export it to excel. As im searching it thru internet, mostly said use syntax"Response.write" or "htmlcontext.current" but i cannot use those syntax due to I'm using Windows Form.
is there any other way to export it to excel? I really need help on this. Thanks!

There are several tools available to generate Excel documents from .Net, for example:
SpreadSheetLight
NPOI
EPPlus
ClosedXML

How to make some cells of xlsx file as read only using openxml library

I am creating xlsx file using openxml library, Every thing is working fine but now i have a requirment to make header and some sample data to be no editable, i had went through vairous link like
https://www.youtube.com/watch?v=KN2Q0vWMd8k
http://openxmldeveloper.org/blog/b/openxmldeveloper/archive/2011/04/15/139098.aspx
but could not find the way how to do this in my case.
Any help will be appreciated..

Making a pdf copy of a csv file programmatically in C#

I have a csv file and I need to make a pdf copy in the console application that creates the csv. All I have found 3rd party libraries for working with pdf but I don't want to use that. Can I just make a copy and save it as a pdf? If so, how?
Also, I'm using C#, in case you didn't read the title.

Try the below link hope it will help you.
http://sourceforge.net/project/platformdownload.php?group_id=72954

You can open the csv with excel.
than use office PIA (interop) to save as PDF.
see:
Can I use Microsoft Office 2010: Primary Interop Assemblies to convert word,excel to PDF

first read the csv files using c# code, and load that data's into DataTable,
write the datatable values into pdf file using c#
may this idea will help 4 u

Exporting to Excel without MS office installed for Wpf Product

I have a small wpf product which requires exporting data to excel with out excel installed on the client machine.How to achieve this in C#.After exporting, this excel can be opened by Open office. All I wanted is to save excel file to the client hard disk. Even excel is not installed he should be able to save the file,he may not be read it without excel but should be able to save. I dont want to any 3rd party or some other open xmls.
Recently I downloaded a product which is able to export to excel without excel installed and able to open it with open office.
When i checked their binaries they contain office.dll ,Microsoft.Vbe.Interop.dll and Microsoft.Office.Interop.Excel.dll's only .I want to know how they are able to manage with these dlls.
I have already written code for this but its breaking when excel is not installed.
I have read many open xml and other stuff relating to this but not satisfied.
My requirement is too simple ,just exporting datatable data to excel,no reading back the data and no fancy oparations with excel.
Please give me suggestions and links will be appreciated.
Thanks in advance

Either work out with CSV format or you may like to use EPPlus library. See similar answer here

You can use CSV, XML, or ADO
How To Use ADO.NET to Retrieve and Modify Records in an Excel Workbook With Visual Basic .NET

xslt transformation can also to the job. i use it to export wpf datagrid data.