Download the latest version of source code (external link) - 1 MB

Introduction

This article walks you through the steps for create a report in Excel using ExcelPackage.

ExcelPackage provides server-side generation of Excel 2007 spreadsheets.
It is a set of classes and wrappers around the .NET 3.0 System.IO.Packaging API and the new Office Open XML file format. It extracts away the complexity of dealing with the individual XML components making it real easy to create sophisticated spreadsheets on the server.

STEP 1 - Create ASP.NET Web Application

Check the link below, to see all the steps to create a Web Api wtih Entity Framework code first implementation.

http://social.technet.microsoft.com/wiki/contents/articles/26795.asp-net-webapi-entity-framework-code-first.aspx

STEP 2 - Install Nuget

Now in order to use ExcelPackage we need to install a Nuget package.

So on the Visual Studio 2015, select the follow menu option:

Tools-> Library Package manager -> Manage NuGet Packages for Solution

Search for EPPlus and select the option Install.

STEP 3 - Excel Generate Class

On ContactController add new method to call GenerateXLS

C#

using System; 
using System.Collections.Generic; 
using System.Data.Entity; 
using System.Data.Entity.Infrastructure; 
using System.Linq; 
using System.Net; 
using System.Net.Http; 
using System.Web.Http; 
using SampleEF6.Models; 
using System.Threading.Tasks; 
using System.Web; 
using System.IO; 
using System.Net.Http.Headers; 
 
namespace SampleEF6.Controllers 
{ 
    public class ReportController : ApiController 
    { 
        // GET api/ 
        [HttpGet] 
        public async Task GetXLSReport() 
        { 
            string fileName = string.Concat("Contacts.xls"); 
            string filePath = HttpContext.Current.Server.MapPath("~/Report/" + fileName); 
 
            ContactController contact = new ContactController(); 
            List contacList = contact.Get().ToList(); 
 
            await SampleEF6.Report.ReportGenerator.GenerateXLS(contacList, filePath); 
 
            HttpResponseMessage result = null; 
            result = Request.CreateResponse(HttpStatusCode.OK); 
            result.Content = new StreamContent(new FileStream(filePath, FileMode.Open)); 
            result.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment"); 
            result.Content.Headers.ContentDisposition.FileName = fileName; 
 
            return result; 
        } 
    } 
}

Create the GenerateXLS method like this:

C#

using OfficeOpenXml; 
using OfficeOpenXml.Style; 
using SampleEF6.Models; 
using System; 
using System.Collections.Generic; 
using System.Drawing; 
using System.IO; 
using System.Linq; 
using System.Reflection; 
using System.Threading.Tasks; 
using System.Web; 
 
namespace SampleEF6.Report 
{ 
    public class ReportGenerator 
    { 
        public static Task GenerateXLS(List datasource, string filePath) 
        { 
            return Task.Run(() => 
            { 
                using (ExcelPackage pck = new ExcelPackage()) 
                { 
                    //Create the worksheet 
                    ExcelWorksheet ws = pck.Workbook.Worksheets.Add("Contacts"); 
 
                    ws.Cells[1, 1].Value = "Id"; 
                    ws.Cells[1, 2].Value = "Name"; 
                    ws.Cells[1, 3].Value = "Address"; 
                    ws.Cells[1, 4].Value = "City"; 
                    ws.Cells[1, 5].Value = "Country"; 
 
                    for (int i = 0; i < datasource.Count(); i++) 
                    { 
                        ws.Cells[i + 2, 1].Value = datasource.ElementAt(i).Id; 
                        ws.Cells[i + 2, 2].Value = datasource.ElementAt(i).Name; 
                        ws.Cells[i + 2, 3].Value = datasource.ElementAt(i).Address; 
                        ws.Cells[i + 2, 4].Value = datasource.ElementAt(i).City; 
                        ws.Cells[i + 2, 5].Value = datasource.ElementAt(i).Country; 
                    } 
 
                    using (ExcelRange rng = ws.Cells["A1:A5"]) 
                    { 
                        rng.Style.Font.Bold = true; 
                        rng.Style.Fill.PatternType = ExcelFillStyle.Solid;        //Set Pattern for the background to Solid 
                        rng.Style.Fill.BackgroundColor.SetColor(Color.DarkGray);  //Set color to DarkGray 
                        rng.Style.Font.Color.SetColor(Color.Black); 
                    } 
 
                    pck.SaveAs(new FileInfo(filePath)); 
                } 
            }); 
        } 
    } 
}

STEP 4 - Run Application

Resources

My personal blog: http://joaoeduardosousa.wordpress.com/
EPPlus-Create advanced Excel spreadsheets on the server

ASP.NET MVC5 - AngularJS, Create XLS file using ExcelPackage