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 with Entity Framework code first implementation.

STEP 2 - Install Nuget

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

So on the Visual Studio 2013, 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/<controller> 
        [HttpGet] 
        public async Task<HttpResponseMessage> GetXLSReport() 
        { 
            string fileName = string.Concat("Contacts.xls"); 
            string filePath = HttpContext.Current.Server.MapPath("~/Report/" + fileName); 
 
            ContactController contact = new ContactController(); 
            List<Contact> 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<Contact> datasource, string filePath) 
        { 
            return Task.Run(() => 
            { 
                using (ExcelPackage pck = new ExcelPackage()) 
                { 
                    //Create the worksheet 
                    ExcelWorksheet ws = pck.Workbook.Worksheets.Add("Contacts"); 
 
                    ws.Cells[11].Value = "Id"; 
                    ws.Cells[12].Value = "Name"; 
                    ws.Cells[13].Value = "Address"; 
                    ws.Cells[14].Value = "City"; 
                    ws.Cells[15].Value = "Country"; 
 
                    for (int i = 0; i < datasource.Count(); i++) 
                    { 
                        ws.Cells[i + 21].Value = datasource.ElementAt(i).Id; 
                        ws.Cells[i + 22].Value = datasource.ElementAt(i).Name; 
                        ws.Cells[i + 23].Value = datasource.ElementAt(i).Address; 
                        ws.Cells[i + 24].Value = datasource.ElementAt(i).City; 
                        ws.Cells[i + 25].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

Some good resources about Windows Azure could be found here:

See Also