#Fast Excel
####Build
####Release
Insperation for this project came from https://github.com/jsegarra1971/SejExcelExport jsegarra1971 did a great job. I wanted to have my own crack at this problem.
Currently provides a fast way of reading and writing to *.xlsx Excel files.
I am not using the Open XML SDK to interact with the data but going directly and editing the underlying xml files.
.Net version 4.5 is required because it uses System.IO.Compression
Check out the demo project for usage and benchmarking.
This project is not intended to be a replacement for full featured Excel packages with things like formatting, just light weight fast way of interacting with data in Excel.
Below are a few demos check out https://github.com/mrjono1/FastExcel/blob/master/FastExcelDemo/Program.cs for more.
####Installation
PM> Install-Package FastExcel
##Write Demo 1 This demo uses Generic objects, ie any object you wish with public properties
using (FastExcel.FastExcel fastExcel = new FastExcel.FastExcel(outputFile))
{
List<MyObject> objectList = new List<MyObject>();
for (int rowNumber = 1; rowNumber < NumberOfRecords; rowNumber++)
{
MyObject genericObject = new MyObject();
genericObject.StringColumn1 = "A string " + rowNumber.ToString();
genericObject.IntegerColumn2 = 45678854;
genericObject.DoubleColumn3 = 87.01d;
genericObject.ObjectColumn4 = DateTime.Now.ToLongTimeString();
objectList.Add(genericObject);
}
fastExcel.Write(objectList, "sheet3", true);
}##Write Demo 2 This demo lets you specify exactly which cell you are writing to
// Get your template and output file paths
FileInfo templateFile = new FileInfo("Template.xlsx");
FileInfo outputFile = new FileInfo("C:\\Temp\\output.xlsx");
//Create a worksheet with some rows
Worksheet worksheet = new Worksheet();
List<Row> rows = new List<Row>();
for (int rowNumber = 1; rowNumber < 100000; rowNumber++)
{
List<Cell> cells = new List<Cell>();
for (int columnNumber = 1; columnNumber < 13; columnNumber++)
{
cells.Add(new Cell(columnNumber, columnNumber * DateTime.Now.Millisecond));
}
cells.Add(new Cell(13, "Hello" + rowNumber));
cells.Add(new Cell(14, "Some Text"));
rows.Add(new Row(rowNumber, cells));
}
worksheet.Rows = rows;
// Create an instance of FastExcel
using (FastExcel.FastExcel fastExcel = new FastExcel.FastExcel(templateFile, outputFile))
{
// Write the data
fastExcel.Write(worksheet, "sheet1");
}##Read Demo 1 Get Worksheet
// Get the input file paths
FileInfo inputFile = new FileInfo("C:\\Temp\\input.xlsx");
//Create a worksheet
DataSet worksheet = null;
// Create an instance of Fast Excel
using (FastExcel.FastExcel fastExcel = new FastExcel.FastExcel(inputFile, true))
{
// Read the rows using worksheet name
worksheet = fastExcel.Read("sheet1");
// Read the rows using the worksheet index
// Worksheet indexes are start at 1 not 0
// This method is slightly faster to find the underlying file (so slight you probably wouldn't notice)
worksheet = fastExcel.Read(1);
}##Read Deme 2 Get All Worksheets
// Get the input file paths
FileInfo inputFile = new FileInfo("C:\\Temp\\fileToRead.xlsx");
// Create an instance of Fast Excel
using (FastExcel.FastExcel fastExcel = new FastExcel.FastExcel(inputFile, true))
{
foreach (var worksheet in fastExcel.Worksheets)
{
Console.WriteLine(string.Format("Worksheet Name:{0}, Index:{1}", worksheet.Name, worksheet.Index));
//To read the rows call read
worksheet.Read();
var rows = worksheet.Rows().ToArray();
//Do something with rows
Console.WriteLine(string.Format("Worksheet Rows:{0}", rows.Count()));
}
}##Update Demo
// Get the input file paths
FileInfo inputFile = new FileInfo("C:\\Temp\\input.xlsx");
//Create a some rows in a worksheet
Worksheet worksheet = new Worksheet();
List<Row> rows = new List<Row>();
for (int rowNumber = 1; rowNumber < NumberOfRecords; rowNumber+= 50)
{
List<Cell> cells = new List<Cell>();
for (int columnNumber = 1; columnNumber < 13; columnNumber+= 2)
{
cells.Add(new Cell(columnNumber, rowNumber));
}
cells.Add(new Cell(13, "Updated Row"));
rows.Add(new Row(rowNumber, cells));
}
worksheet.Rows = rows;
// Create an instance of Fast Excel
using (FastExcel.FastExcel fastExcel = new FastExcel.FastExcel(inputFile))
{
// Read the data
fastExcel.Update(worksheet, "sheet1");
}