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Read excel cell styling and formatting in C#

I have an excel file located on SharePoint. I am reading the excel file in C# using OpenXML. While reading the data, I also need the information of any styles that are been added to the cells.
If there is any cell that has been added a background color to, How can I read it in C# ?

Have a look at this you will find some references about foreground color and background color of cell
https://social.msdn.microsoft.com/Forums/vstudio/en-US/c46f8610-0394-4eb9-a0f4-3d9a569817f0/other-properties-of-cell?forum=oxmlsdk

I don't know how you can do that with OpenXML, in the past i have always used Microsoft.Office.Interop.Excel. It's a nuget package that allow you to manipulate your excel style.
I hope it can help you!

Add watermark text to Excel document

I'm using OpenXML to generate Excel file.
I want to add watermark text to the Excel sheet using OpenXML.
How I can do this using OpenXML?

As word document watermark there is no such feature in Microsoft excel. But it can be mimic by applying Header, Footer or background image.
Please refer below link for adding background image in E
Add background image to Excel using OpenXML

How to paste a specific range from one excel sheet to another as Paste Special - Linked Picture using C#

I am trying to including a table or specific range from one sheet into another sheet as an image/picture.
In Excel it is done by selecting the entire table from sheet2 and then on sheet1: Paste Special - Linked Picture.
Is there a way to get this done using C#? I am developing a project which requires this task.

I'm not sure about converting the contents to a picture, but you can read and write to/from a spreadsheet using the Open XML SDK (link). I've used it to manipulate Word documents, but I imagine it functions similarly for spreadsheets.

How to maintain formatting of cells when copying cells from Excel to Word

Currently I'm using OleDB to connect with Excel Spreadsheet and getting data in a DataTable, doing some modifications on data and then copying the data to Word.
In doing so I'm losing the formatting of the cell, like if any part of text was colored or if the background color was grayed or if it's bold.
I'm using Interop library to communicate with word and OLEDB with Excel.
If this solution is not good enough for what I need to achieve , can you suggest alternative solutions? (Macros?)
I tried using Interop.Excel.Styles but I can't figure out how to relate it with the cell being currently used.

We copy the range of the table in the spreadsheet and the directly paste in the word document which preserves formatting.
wordDoc.Tables.Add(b.Range,newsheet.UsedRange.Rows.Count,newsheet.UsedRange.Columns.Count);
Microsoft.Office.Interop.Word.Table table = b.Range.Tables[1];
newsheet.UsedRange.Copy();
table.Range.Select();
wordApp.Selection.Paste();
wordDoc is Word.Document and wordApp is word.Application. Hope this helps

Yeah, that's gonna happen. OleDB moves data, not formatting information. If you want the formatting, you're going to have to copy/paste from Excel to Word. If you need to automate the process, VBA is the easiest way to control Excel and Word from the outside.

Manipulating Excel Data using Visual C#

I need to set/insert hyperlinks for a range of values in an Excel sheet from my program written in Visual C#.
I am using "Microsoft.Office.Interop.Excel" and no third party Excel tools.
I have URLs in string format with me in the program which need to show up as Hyperlinks in the Excel workbook.
Any ideas on how this can be implemented? I did not see any familiar feature in Excel.Range which I could use. Any suggestions would be appreciated!
Thanks,
Ivar

Have you tried Hyperlinks.Add?
You can add a hyperlink to a range of cells (after setting the text content).