Linq to Xlsx

A sample how to read a Excel 2007/2010 using Open XML SDK V2

(forgive the bad syntax highlighting)

 

[code:c#]

 using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using DocumentFormat.OpenXml.Spreadsheet;
using DocumentFormat.OpenXml.Packaging;

namespace ConsoleApplicationLinqToXlsx
{
    class Program
    {
        static void Main(string[] args)
        {
            //Declare variables to hold refernces to Excel objects.
            Workbook workBook;
            SharedStringTable sharedStrings;
            IEnumerable<Sheet> workSheets;
            WorksheetPart custSheet;
            WorksheetPart orderSheet;

            //Declare helper variables.
            string custID;
            string orderID;
            List<Customer> customers;
            List<Order> orders;

            //Open the Excel workbook.
            using (SpreadsheetDocument document =
              SpreadsheetDocument.Open(@"d:\Temp\ConsoleApplicationLinqToXlsx\TestOpenXMl.xlsx ", true))
            {
                //References to the workbook and Shared String Table.
                workBook = document.WorkbookPart.Workbook;
                workSheets = workBook.Descendants<Sheet>();
                sharedStrings =
                  document.WorkbookPart.SharedStringTablePart.SharedStringTable;

                //Reference to Excel Worksheet with Customer data.
                custID =
                  workSheets.First(s => s.Name == @"Customer").Id;
                custSheet =
                  (WorksheetPart)document.WorkbookPart.GetPartById(custID);

                //Load customer data to business object.
                customers =
                  Customer.LoadCustomers(custSheet.Worksheet, sharedStrings);

                //Reference to Excel worksheet with order data.
                orderID =
                  workSheets.First(sheet => sheet.Name == @"Order").Id;
                orderSheet =
                  (WorksheetPart)document.WorkbookPart.GetPartById(orderID);

                //Load order data to business object.
                orders =
                  Order.LoadOrders(orderSheet.Worksheet, sharedStrings);

                //List all customers to the console.
                //Write header information to the console.
                Console.WriteLine("All Customers");
                Console.WriteLine("{0, -15} {1, -15} {2, -5}",
                  "Customer", "City", "State");

                //LINQ Query for all customers.
                IEnumerable<Customer> allCustomers =
                    from customer in customers
                    select customer;

                //Execute query and write customer information to the console.
                foreach (Customer c in allCustomers)
                {
                    Console.WriteLine("{0, -15} {1, -15} {2, -5}",
                      c.Name, c.City, c.State);
                }
                Console.WriteLine();
                Console.WriteLine();


                //Write all orders over $100 to the console.
                //Write header information to the console.
                Console.WriteLine("All Orders over $100");
                Console.WriteLine("{0, -15} {1, -10} {2, 10} {3, -5}",
                  "Customer", "Date", "Amount", "Status");

                //LINQ Query for all orders over $100.
                //Join used to display customer information for the order.
                var highOrders =
                  from customer in customers
                  join order in orders on customer.Name equals order.Customer
                  where order.Amount > 100.00
                  select new
                  {
                      customer.Name,
                      order.Date,
                      order.Amount,
                      order.Status
                  };

                //Execute query and write information to the console.
                foreach (var result in highOrders)
                {
                    Console.WriteLine("{0, -15} {1, -10} {2, 10} {3, -5}",
                      result.Name, result.Date.ToShortDateString(),
                      result.Amount, result.Status);
                }
                Console.WriteLine();
                Console.WriteLine();


                //Report on customer orders by status.
                //Write header information to  the console.
                Console.WriteLine("Customer Orders by Status");

                //LINQ Query for summarizing customer order information by status.
                //There are two LINQ queries. 
                //Internal query is used to group orders together by status and
                //calculates the total order amount and number of orders.
                //External query is used to join Customer information.
                var sumoforders =
                  from customer in customers
                  select new
                  {
                      customer.Name,
                      statusTotals =
                          from order in orders
                          where order.Customer == customer.Name
                          group order.Amount by order.Status into statusGroup
                          select new
                          {
                              status = statusGroup.Key,
                              orderAmount = statusGroup.Sum(),
                              orderCount = statusGroup.Count()
                          }
                  };

                //Execute query and write information to the console.
                foreach (var customer in sumoforders)
                {
                    //Write Customer name to the console.
                    Console.WriteLine("-{0}-", customer.Name);
                    foreach (var x in customer.statusTotals)
                    {
                        Console.WriteLine("  {0, -10}: {2,2} orders totaling {1, 7}",
                          x.status, x.orderAmount, x.orderCount);
                    }
                    Console.WriteLine();
                }

                //Keep the console window open.
                Console.Read();
            }
        }

        /// <summary>
        /// Used to store customer information for analysis.
        /// </summary>
        public class Customer
        {
            //Properties.
            public string Name { get; set; }
            public string City { get; set; }
            public string State { get; set; }

            /// <summary>
            /// Helper method for creating a list of customers
            /// from an Excel worksheet.
            /// </summary>
            public static List<Customer> LoadCustomers(Worksheet worksheet,
              SharedStringTable sharedString)
            {
                //Initialize the customer list.
                List<Customer> result = new List<Customer>();

                //LINQ query to skip first row with column names.
                IEnumerable<Row> dataRows =
                  from row in worksheet.Descendants<Row>()
                  where row.RowIndex > 1
                  select row;

                foreach (Row row in dataRows)
                {
                    //LINQ query to return the row's cell values.
                    //Where clause filters out any cells that do not contain a value.
                    //Select returns the value of a cell unless the cell contains
                    //  a Shared String.
                    //If the cell contains a Shared String, its value will be a
                    //  reference id which will be used to look up the value in the
                    //  Shared String table.
                    IEnumerable<String> textValues =
                      from cell in row.Descendants<Cell>()
                      where cell.CellValue != null
                      select
                        (cell.DataType != null
                          && cell.DataType.HasValue
                          && cell.DataType == CellValues.SharedString
                        ? sharedString.ChildElements[
                          int.Parse(cell.CellValue.InnerText)].InnerText
                        : cell.CellValue.InnerText)
                      ;

                    //Check to verify the row contained data.
                    if (textValues.Count() > 0)
                    {
                        //Create a customer and add it to the list.
                        var textArray = textValues.ToArray();
                        Customer customer = new Customer();
                        customer.Name = textArray[0];
                        customer.City = textArray[1];
                        customer.State = textArray[2];
                        result.Add(customer);
                    }
                    else
                    {
                        //If no cells, then you have reached the end of the table.
                        break;
                    }
                }

                //Return populated list of customers.
                return result;
            }
        }

        /// <summary>
        /// Used to store order information for analysis.
        /// </summary>
        public class Order
        {
            //Properties.
            public string Number { get; set; }
            public DateTime Date { get; set; }
            public string Customer { get; set; }
            public Double Amount { get; set; }
            public string Status { get; set; }

            /// <summary>
            /// Helper method for creating a list of orders
            /// from an Excel worksheet.
            /// </summary>
            public static List<Order> LoadOrders(Worksheet worksheet,
              SharedStringTable sharedString)
            {
                //Initialize order list.
                List<Order> result = new List<Order>();

                //LINQ query to skip first row with column names.
                IEnumerable<Row> dataRows =
                  from row in worksheet.Descendants<Row>()
                  where row.RowIndex > 1
                  select row;

                foreach (Row row in dataRows)
                {
                    //LINQ query to return the row's cell values.
                    //Where clause filters out any cells that do not contain a value.
                    //Select returns cell's value unless the cell contains
                    //  a shared string.
                    //If the cell contains a shared string its value will be a
                    //  reference id which will be used to look up the value in the
                    //  shared string table.
                    IEnumerable<String> textValues =
                      from cell in row.Descendants<Cell>()
                      where cell.CellValue != null
                      select
                        (cell.DataType != null
                          && cell.DataType.HasValue
                          && cell.DataType == CellValues.SharedString
                        ? sharedString.ChildElements[
                          int.Parse(cell.CellValue.InnerText)].InnerText
                        : cell.CellValue.InnerText)
                      ;

                    //Check to verify the row contains data.
                    if (textValues.Count() > 0)
                    {
                        //Create an Order and add it to the list.
                        var textArray = textValues.ToArray();
                        Order order = new Order();
                        order.Number = textArray[0];
                        order.Date = new DateTime(1900, 1, 1).AddDays(
                          Double.Parse(textArray[1]) - 2);
                        order.Customer = textArray[2];
                        order.Amount = Double.Parse(textArray[3]);
                        order.Status = textArray[4];
                        result.Add(order);
                    }
                    else
                    {
                        //If no cells, then you have reached the end of the table.
                        break;
                    }
                }

                //Return populated list of orders.
                return result;
            }
        }

    }
}

[/code]

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