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.application") code which will do what i need. What is the equivalent in c#? I would love for it to work on any version, and if possible then also computers without ms office at all. Please no 3rd party components that cost money. we are poor :).

TY

Answer 1

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 2

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 3

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

Answer 4

如果要打开excel文档然后添加内容，最简单的方法之一（不要求安装excel）是获取可以读取和保存的3rd party lib（可能有一些开源解决方案） Excel文件。

Answer 5

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