C# export to excel

Question

Which is the best way to export data to an existing xls sheet. I needs to support many versions of excel. If i was using Visual basic. I would use the CreateObject(\"Excel.a

Answer 1

If you are wanting to Open an excel doc and then add content, one of the easiest way (w/o requiring excel to be installed) is to get a 3rd party lib ( there are probably some open source solutions) that can read and save excel files.

Answer 2

Writing to Excel using C# can be accomplished using the Interop.Excel Here is a nice tutorial with screen shots to help make this happen.

http://csharp.net-informations.com/excel/csharp-excel-tutorial.htm

Answer 3

Excel Export

I use EP Plus Excel Export for this. Add EP Plus library from Nuget to your project. Then add this class to your project.

ExcelExport.cs

Try

And use it on MVC:

public ActionResult ExportToExcel(string cid)
{
    var customerList = new List<DtoCustomer>();
    customerList = CustomerFactory.Gets();
    ExcelExport.EpplusExportToExcelFromObjectList(customerList.ToList<object>(), "Customer List", true);

    return null;
}

---

Also you can define which column with which name shows on Excel Document. you have to create an attribute class for this.

ExportAttribute

using System.Attribute;
public class ExportAttribute : Attribute
{
    public string DisplayName { get; set; }
    public bool IsVisible { get; set; }
}

Class & Implementation

Then, implement this attribute to your class:

public class DtoCustomer
{
    [ExportAttribute(DisplayName = "#", IsVisible = false)]
    public int ID { get; set; }
    [ExportAttribute(DisplayName = "Customer Name", IsVisible = true)]
    public string Name{ get; set; }
    [ExportAttribute(DisplayName = "Customer Surname", IsVisible = true)]
    public string Surname { get; set; }
}

Answer 4

I know you said no third-party but the reason seems to be cost.

The library I use is GemBox. It is free as long as the spreadsheets are not too large (150 rows and 5 worksheets max). For my use this is no problem and it works very well.

http://www.gemboxsoftware.com/GBSpreadsheet.htm

There are also some open source options.

If you are writing to the XML format then ExcelPackage is free (GPL) and may work for you:

http://excelpackage.codeplex.com/

If you want no XML but the other formats, I hear good things about ExcelLibrary (LGPL):

http://code.google.com/p/excellibrary/

There is also a port of the JExcel library (LGPL) to C#:

http://www.chrislaforetsoftware.com/products.html

Answer 5

There are built in functions for exporting an ASP.Net grid to excel. It gives a little warning message to the end user but it works.

It is described here: C Sharp Corner