101 lines
2.9 KiB
C#
101 lines
2.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using ExcelLibrary.SpreadSheet;
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using MileageTraker.Web.Models;
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namespace MileageTraker.Web.Utility
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{
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public static class ExcelWriter
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{
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public static void WriteXls<T>(IEnumerable<T> items, string filename, string worksheetTitle, string worksheetName)
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{
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using (var fileStream = new FileStream(filename, FileMode.Create))
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WriteXls(items, fileStream, worksheetTitle, worksheetName);
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}
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public static byte[] WriteXls<T>(IEnumerable<T> items, string worksheetTitle, string worksheetName)
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{
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using (var stream = new MemoryStream())
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{
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WriteXls(items, stream, worksheetTitle, worksheetName);
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return stream.ToArray();
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}
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}
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public static void WriteXls<T>(IEnumerable<T> items, Stream stream, string worksheetTitle, string worksheetName)
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{
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var workbook = new Workbook();
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var worksheet = new Worksheet(worksheetName);
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// write worksheet header
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worksheet.Cells[0, 3] = new Cell(worksheetTitle);
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// write column headers
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var properties =
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typeof(T).GetProperties()
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.Where(p => !p.PropertyType.IsCollection())
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.Where(p => !p.Name.Contains("PreviousLog"))
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.ToList();
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properties.Zip(
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CustomExtensions.GetNumbers(),
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(p, c) =>
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worksheet.Cells[2, c] = new Cell(p.GetName())
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).ToList();
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// write the data
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items.Zip(
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CustomExtensions.GetNumbers().Skip(3),
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(vehicle, r) =>
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properties.Zip(CustomExtensions.GetNumbers(),
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(p, c) => {
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var value = p.GetValue(vehicle);
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string formatString = null;
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if (value is decimal) // assume that it's currency
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formatString = "#,##0.00";
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if (value is DateTime && p.Name == "Date")
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formatString = @"YYYY\-MM\-DD";
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else if (value is DateTime)
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formatString = @"YYYY\-MM\-DD hh:mm:ss";
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int intValue; // write int-looking values as numbers
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if (value is string && int.TryParse((string)value, out intValue))
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value = intValue;
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double doubleValue; // write double-looking values as numbers
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if (value is string && double.TryParse((string)value, out doubleValue))
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value = doubleValue;
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if (value is MileageLogTypeWrapper)
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value = ((MileageLogTypeWrapper) value).Enum.GetDisplayName();
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var cell = formatString != null ? new Cell(value,formatString) : new Cell(value);
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worksheet.Cells[r, c] = cell;
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return (string)null;
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}).ToList()).ToList();
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PadWorksheet(worksheet);
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workbook.Worksheets.Add(worksheet);
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workbook.Save(stream);
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}
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private static void PadWorksheet(Worksheet worksheet)
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{
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Func<int> totalCells = () => (worksheet.Cells.LastRowIndex + 1)*(worksheet.Cells.LastColIndex + 1);
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for (var r = worksheet.Cells.LastRowIndex + 1; totalCells() < 320; r++)
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{
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for (var c = 0; c < worksheet.Cells.LastColIndex; c++)
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{
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worksheet.Cells[r, c] = new Cell("");
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}
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}
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}
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}
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} |