EpPlus读取生成Excel帮助类+读取csv帮助类+Aspose.Cells生成Excel帮助类

大部分功能逻辑都在，少量自定义异常类和扩展方法，可用类似代码自己替换

//EpPlus读取生成Excel帮助类+读取csv帮助类，epplus只支持开放的Excel文件格式：xlsx，不支持 xls格式

/* ==============================================================================* 功能描述：EppHelper  * 创 建 者：蒲奎民* 创建日期：2016-07-21 14:30:35* CLR Version :4.0.30319.42000* ==============================================================================*/
using OfficeOpenXml;
using OfficeOpenXml.Style;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Linq.Expressions;
using System.Reflection;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using YCF.HRMS.Utilities.ExceptionHeper;
using YCF.HRMS.Utilities.ExtensionHelper;
/** 引用文件：* packages\EPPlus.4.1.0\lib\net40\EPPlus.dll* packages\EPPlus.Extensions.1.0.0.0\lib\net40\EPPlus.Extensions.dll*/
namespace YCF.HRMS.Utilities.CommomHelper
{/// <summary>/// EpPlus读取Excel帮助类+读取csv帮助类/// </summary>public class EppHelper{#region 由List创建简单Exel.列头取字段的Description或字段名/// <summary>/// 由List创建简单Exel.列头取字段的Description或字段名/// </summary>/// <typeparam name="T"></typeparam>/// <param name="filePath">The file path.</param>/// <param name="dataList">The data list.</param>public static void CreateExcelByList<T>(string filePath, List<T> dataList) where T : class{string dirPath = Path.GetDirectoryName(filePath);string fileName = Path.GetFileName(filePath);FileInfo newFile = new FileInfo(filePath);if (newFile.Exists){newFile.Delete();  // ensures we create a new workbooknewFile = new FileInfo(filePath);}PropertyInfo[] properties = null;if (dataList.Count > 0){Type type = dataList[0].GetType();properties = type.GetProperties(BindingFlags.Instance | BindingFlags.Public);var filedDescriptions = CommonFunctions.GetPropertyDescriptions<T>(true);//字段与excel列名对应关系using (ExcelPackage package = new ExcelPackage(newFile)){ExcelWorksheet worksheet = package.Workbook.Worksheets.Add("sheet1");//设置表头单元格格式using (var range = worksheet.Cells[1, 1, 1, properties.Length]){range.Style.Font.Bold = true;range.Style.Fill.PatternType = ExcelFillStyle.Solid;range.Style.Fill.BackgroundColor.SetColor(Color.DarkBlue);range.Style.Font.Color.SetColor(Color.White);}int row = 1, col;object objColValue;string colValue;//表头for (int j = 0; j < properties.Length; j++){row = 1;col = j + 1;var description = filedDescriptions.Where(o => o.Key == properties[j].Name).Select(o => o.Value).FirstOrDefault();worksheet.Cells[row, col].Value = (description == null || description.Description.IsNullOrEmpty()) ? properties[j].Name : description.Description;}worksheet.View.FreezePanes(row + 1, 1); //冻结表头//各行数据for (int i = 0; i < dataList.Count; i++){row = i + 2;for (int j = 0; j < properties.Length; j++){col = j + 1;objColValue = properties[j].GetValue(dataList[i], null);colValue = objColValue == null ? "" : objColValue.ToString();worksheet.Cells[row, col].Value = colValue;}}package.Save();}}}#endregion#region 读取Excel数据到DataSet/// <summary>/// 读取Excel数据到DataSet/// </summary>/// <param name="filePath">The file path.</param>/// <returns></returns>public static DataSet ReadExcelToDataSet(string filePath){DataSet ds = new DataSet("ds");DataRow dr;object objCellValue;string cellValue;using (FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.ReadWrite))using (ExcelPackage package = new ExcelPackage()){package.Load(fs);foreach (var sheet in package.Workbook.Worksheets){if (sheet.Dimension == null) continue;var columnCount = sheet.Dimension.End.Column;var rowCount = sheet.Dimension.End.Row;if (rowCount > 0){DataTable dt = new DataTable(sheet.Name);for (int j = 0; j < columnCount; j++)//设置DataTable列名{objCellValue = sheet.Cells[1, j + 1].Value;cellValue = objCellValue == null ? "" : objCellValue.ToString();dt.Columns.Add(cellValue, typeof(string));}for (int i = 2; i <= rowCount; i++){dr = dt.NewRow();for (int j = 1; j <= columnCount; j++){objCellValue = sheet.Cells[i, j].Value;cellValue = objCellValue == null ? "" : objCellValue.ToString();dr[j - 1] = cellValue;}dt.Rows.Add(dr);}ds.Tables.Add(dt);}}}return ds;}#endregion#region 读取csv数据到List<T>,列头与字段的Description对应/// <summary>/// 读取csv数据到List<T>,列头与字段的Description对应/// </summary>/// <typeparam name="T">输出类型</typeparam>/// <param name="filePath">文件路径</param>/// <returns></returns>public static List<T> ReadCsvToModelList<T>(string filePath, string uploadMonth, long userId) where T : class{List<T> list = new List<T>();object objCellValue;string cellValue;string columnName;var filedDescriptions = CommonFunctions.GetPropertyDescriptions<T>(false);//字段与excel列名对应关系var fieldIndexs = new List<KeyValuePair<int, FieldDescriptionModel>>();//Excel列索引与字段名对应关系int lineCount = 1;string mes = "";Type type = typeof(T);int iUserId = int.Parse(userId.ToString());var properties = type.GetProperties();using (FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read))using (StreamReader sr = new StreamReader(fs, Encoding.Default)){string line;var columnCount = 0;bool isEmptyCellValue = false;//是否有必须填写但实际没填写的数据while (true){isEmptyCellValue = false;line = sr.ReadLine();if (string.IsNullOrWhiteSpace(line)){break;}string[] split = SplitCsvLine(line);if (lineCount == 1)//列头{columnCount = split.Length;for (int j = 0; j < columnCount; j++)//设置DataTable列名{objCellValue = split[j];cellValue = objCellValue == null ? "" : objCellValue.ToString();var cellFieldName = filedDescriptions.Where(o => o.Key == cellValue).Select(o => o.Value).FirstOrDefault();fieldIndexs.Add(new KeyValuePair<int, FieldDescriptionModel>(j, cellFieldName));}lineCount++;continue;}//当第一列为空时退出csv读取if (string.IsNullOrWhiteSpace(split[0])){break;}if (split.Length > columnCount){mes += lineCount.ToString() + ","; //string.Format("第{0}行读取有误，数据列数{1}大于标题列数{2}，请检查该行单元格内是否有逗号<\br>", lineCount, split.Length, dataTypes.Length);lineCount++;continue;}if (split.Length < columnCount){mes += lineCount.ToString() + ",";//string.Format("第{0}行数据读取有误，数据列数{1}小于标题列数{2}，请检查该行单元格内是否有逗号<\br>", lineCount, split.Length, dataTypes.Length);lineCount++;continue;}T model = Activator.CreateInstance<T>();for (int j = 0; j < columnCount; j++){objCellValue = split[j];var field = fieldIndexs.First(o => o.Key == j).Value;columnName = field.FieldName;if (columnName.IsNullOrEmpty()) continue;PropertyInfo p = properties.FirstOrDefault(o => string.Equals(o.Name, columnName, StringComparison.InvariantCultureIgnoreCase));if (p == null) continue;SetPropertyValue<T>(ref model, ref p, ref objCellValue, ref field, ref isEmptyCellValue);}if (isEmptyCellValue){continue;}SetPropertyValueForKnowColumns<T>(ref model, ref properties, ref uploadMonth, ref userId, ref iUserId);list.Add(model);lineCount++;}}if (mes != "") throw new BusinessException("第" + mes.TrimEnd(',') + "行读取有误，请检查该行单元格内是否有逗号");#region 判断第一行数据是否合格，Excel列名和字段对不上的情况，检查一个就等于检查全部var firstModel = list.FirstOrDefault();CheckModelRequiredData<T>(ref firstModel, ref properties, ref filedDescriptions);#endregionreturn list;}#endregion#region 设置字段属性的值/// <summary>/// 设置字段属性的值/// </summary>/// <typeparam name="T"></typeparam>/// <param name="model">The model.</param>/// <param name="p">The p.</param>/// <param name="objCellValue">The object cell value.</param>/// <param name="field">The field.</param>/// <param name="isEmptyCellValue">if set to <c>true</c> [is empty cell value].</param>/// <exception cref="BusinessException">出错，字段名： + p.Name + ,类型： + p.PropertyType.ToString() + ,数据： + (objCellValue == null ?  : objCellValue.ToString()) + ,错误信息： + ex.Message</exception>private static void SetPropertyValue<T>(ref T model, ref PropertyInfo p, ref object objCellValue, ref FieldDescriptionModel field, ref bool isEmptyCellValue) where T : class{var propertyType = p.PropertyType.ToString();switch (propertyType){case "System.String":{if (objCellValue is string == false){if (objCellValue == null) objCellValue = "";else objCellValue = objCellValue.ToString();if (field.IsRequire && objCellValue.ToString() == ""){isEmptyCellValue = true;break;}}if (objCellValue != null) objCellValue = objCellValue.ToString().Replace("\r\n", "").Trim();}break;case "System.Decimal":case "System.Nullable`1[System.Decimal]":{if (objCellValue is decimal == false){if (objCellValue != null){if (objCellValue.ToString().EndsWith("%")){objCellValue = Convert.ToDecimal(objCellValue.ToString().TrimEnd('%')) / 100M;}else objCellValue = Convert.ToDecimal(objCellValue.ToString());}}}break;case "System.Int32":case "System.Nullable`1[System.Int32]":{if (objCellValue is int == false){if (objCellValue != null) objCellValue = Convert.ToInt32(objCellValue);}}break;case "System.Int64":case "System.Nullable`1[System.Int64]":{if (objCellValue is long == false){if (objCellValue != null) objCellValue = Convert.ToInt64(objCellValue);}}break;case "System.DateTime":case "System.Nullable`1[System.DateTime]":{if (objCellValue is DateTime == false){if (objCellValue != null) objCellValue = ToDateTimeValue(objCellValue.ToString());}}break;case "System.Boolean":case "System.Nullable`1[System.Boolean]":{if (objCellValue is bool == false){if (objCellValue != null){var tempValue = objCellValue.ToString().Trim();if (tempValue == "#N/A") tempValue = "";else if (tempValue == "是") tempValue = "True";else if (tempValue == "否") tempValue = "False";if (tempValue != "") objCellValue = Convert.ToBoolean(tempValue);else objCellValue = null;}}}break;}try{p.SetValue(model, objCellValue, null);}catch (Exception ex){throw new BusinessException("出错，字段名：" + p.Name + ",类型：" + p.PropertyType.ToString() + ",数据：" + (objCellValue == null ? "" : objCellValue.ToString()) + ",错误信息：" + ex.Message);}}#endregion#region 其他已知属性赋默认值/// <summary>/// 其他已知属性赋默认值/// </summary>/// <typeparam name="T"></typeparam>/// <param name="model">The model.</param>/// <param name="properties">The properties.</param>/// <param name="uploadMonth">The upload month.</param>/// <param name="userId">The user identifier.</param>/// <param name="iUserId">The i user identifier.</param>private static void SetPropertyValueForKnowColumns<T>(ref T model, ref PropertyInfo[] properties, ref string uploadMonth, ref long userId, ref int iUserId){var monthProperty = properties.FirstOrDefault(o => string.Equals(o.Name, "Month", StringComparison.InvariantCultureIgnoreCase));if (monthProperty != null){monthProperty.SetValue(model, uploadMonth, null);}var createTimeProperty = properties.FirstOrDefault(o => string.Equals(o.Name, "CreationTime", StringComparison.InvariantCultureIgnoreCase));if (createTimeProperty != null){createTimeProperty.SetValue(model, DateTime.Now, null);}var modifyTimeProperty = properties.FirstOrDefault(o => string.Equals(o.Name, "LastModificationTime", StringComparison.InvariantCultureIgnoreCase));if (modifyTimeProperty != null){modifyTimeProperty.SetValue(model, DateTime.Now, null);}var createUserIdProperty = properties.FirstOrDefault(o => string.Equals(o.Name, "CreatorUserId", StringComparison.InvariantCultureIgnoreCase));if (createUserIdProperty != null){if (createTimeProperty.PropertyType.ToString() == "System.Int32") createUserIdProperty.SetValue(model, iUserId, null);else createUserIdProperty.SetValue(model, userId, null);}}#endregion#region 最后判断第一行数据是否合格，Excel列名和字段对不上的情况，检查一个就等于检查全部/// <summary>/// 最后判断第一行数据是否合格，Excel列名和字段对不上的情况，检查一个就等于检查全部/// </summary>/// <typeparam name="T"></typeparam>/// <param name="model">The model.</param>/// <param name="filedDescriptions">The filed descriptions.</param>private static void CheckModelRequiredData<T>(ref T firstModel, ref PropertyInfo[] properties, ref List<KeyValuePair<string, FieldDescriptionModel>> filedDescriptions){if (firstModel != null){var fieldNameList = filedDescriptions.Where(o => o.Value != null).Select(o => o.Value).ToList();foreach (var p in properties){var fieldNameModel = fieldNameList.FirstOrDefault(o => string.Equals(o.FieldName, p.Name, StringComparison.InvariantCultureIgnoreCase));if (fieldNameModel == null || fieldNameModel.IsRequire == false) continue;//为空或没有Require标记，跳过object objCellValue = p.GetValue(firstModel);if (objCellValue == null || objCellValue.ToString() == ""){throw new BusinessException("出错，字段名：" + p.Name + ",类型：" + p.PropertyType.ToString() + " 必填字段数据为空！");}}}} #endregion#region 读取Excel数据到List<T>,列头与字段的Description对应/// <summary>/// 读取Excel数据到List<T>,列头与字段的Description对应/// </summary>/// <typeparam name="T"></typeparam>/// <param name="filePath">The file path.</param>/// <returns></returns>public static List<T> ReadExcelToModelList<T>(string filePath, string uploadMonth, long userId, out string log, int titleRow = 1) where T : class{ExcelPackage package = null;FileStream fs = null;try{//ConcurrentBag<T> list = new ConcurrentBag<T>();List<T> list = new List<T>();log = string.Format("{0:yyyy-MM-dd HH:mm:ss}开始载入文件{1}\r\n", DateTime.Now, filePath);var filedDescriptions = CommonFunctions.GetPropertyDescriptions<T>(false);//字段与excel列名对应关系var fieldIndexs = new List<KeyValuePair<int, FieldDescriptionModel>>();//Excel列索引与字段名对应关系fs = new FileStream(filePath, FileMode.Open, FileAccess.ReadWrite);package = new ExcelPackage();package.Load(fs);log += string.Format("{0:yyyy-MM-dd HH:mm:ss}完成载入文件{1}，开始解析\r\n", DateTime.Now, filePath);if (package.Workbook.Worksheets.Count == 0){throw new BusinessException("读取的Excel中sheet数量为0，请检查文件格式是否为xlsx！");}var sheet = package.Workbook.Worksheets[1];if (sheet.Dimension == null) return list.ToList();var columnCount = sheet.Dimension.End.Column;var rowCount = sheet.Dimension.End.Row;if (rowCount == 0) return list.ToList();//DataTable dt = new DataTable(sheet.Name);for (int j = 1; j <= columnCount; j++)//列名与字段名对应关系{object objCellValue = sheet.Cells[titleRow, j].Value;string cellValue = objCellValue == null ? "" : objCellValue.ToString();if (cellValue.Len() == 0) continue;var cellFieldName = filedDescriptions.Where(o => o.Key == cellValue).Select(o => o.Value).FirstOrDefault();fieldIndexs.Add(new KeyValuePair<int, FieldDescriptionModel>(j, cellFieldName));//dt.Columns.Add(cellValue, typeof(string));}Type type = typeof(T);int iUserId = int.Parse(userId.ToString());var properties = type.GetProperties();//List<int> rowIndexList = Enumerable.Range(titleRow + 1, rowCount - titleRow).ToList();//数据行的行号集合//Parallel.ForEach(rowIndexList, (i) =>for (int i = titleRow + 1; i <= rowCount; i++){#region 处理Excel每行数据object objCellValue = null;string columnName = null;bool isEmptyCellValue = false;//是否有必须填写但实际没填写的数据T model = Activator.CreateInstance<T>();for (int j = 1; j <= columnCount; j++){objCellValue = sheet.Cells[i, j].Value;var fieldPair = fieldIndexs.FirstOrDefault(o => o.Key == j);var field = fieldPair.Value;columnName = field == null ? "" : field.FieldName;if (columnName.IsNullOrEmpty()) continue;PropertyInfo p = properties.FirstOrDefault(o => string.Equals(o.Name, columnName, StringComparison.InvariantCultureIgnoreCase));if (p == null) continue;SetPropertyValue<T>(ref model, ref p, ref objCellValue, ref field, ref isEmptyCellValue);}if (!isEmptyCellValue){SetPropertyValueForKnowColumns<T>(ref model, ref properties, ref uploadMonth, ref userId, ref iUserId);list.Add(model);}#endregion}//);#region 判断第一行数据是否合格，Excel列名和字段对不上的情况，检查一个就等于检查全部var firstModel = list.FirstOrDefault();CheckModelRequiredData<T>(ref firstModel, ref properties, ref filedDescriptions);#endregionlog += string.Format("{0:yyyy-MM-dd HH:mm:ss}完成解析文件{1}\r\n", DateTime.Now, filePath);return list;}finally{if (package != null) package.Dispose();//释放Excel对象资源if (fs != null)//关闭和释放文件流资源{fs.Close(); fs.Dispose();}}}#endregion#region Splits the CSV line./// <summary>/// Splits the CSV line./// </summary>/// <param name="s">The s.</param>/// <returns></returns>private static string[] SplitCsvLine(string s){Regex regex = new Regex("\".*?\"");var a = regex.Matches(s).Cast<Match>().Select(m => m.Value).ToList();var b = regex.Replace(s, "%_%");var c = b.Split(',');for (int i = 0, j = 0; i < c.Length && j < a.Count; i++){if (c[i] == "%_%"){c[i] = a[j++];}}return c;}#endregion#region Excel中数字时间转换成时间格式/// <summary>/// Excel中数字时间转换成时间格式/// </summary>/// <param name="timeStr">数字,如:42095.7069444444/0.650694444444444</param>/// <returns>日期/时间格式</returns>public static DateTime ToDateTimeValue(string strNumber){if (!string.IsNullOrWhiteSpace(strNumber)){Decimal tempValue;DateTime tempret;if (DateTime.TryParse(strNumber, out tempret)){return tempret;}if (strNumber.Length == 8 && strNumber.Contains(".") == false)//20160430{strNumber = strNumber.Insert(4, "-").Insert(6 + 1, "-");if (DateTime.TryParse(strNumber, out tempret)){return tempret;}else return default(DateTime);}//先检查 是不是数字;if (Decimal.TryParse(strNumber, out tempValue)){//天数,取整int day = Convert.ToInt32(Math.Truncate(tempValue));//这里也不知道为什么. 如果是小于32,则减1,否则减2//日期从1900-01-01开始累加 // day = day < 32 ? day - 1 : day - 2;DateTime dt = new DateTime(1900, 1, 1).AddDays(day < 32 ? (day - 1) : (day - 2));//小时:减掉天数,这个数字转换小时:(* 24) Decimal hourTemp = (tempValue - day) * 24;//获取小时数//取整.小时数int hour = Convert.ToInt32(Math.Truncate(hourTemp));//分钟:减掉小时,( * 60)//这里舍入,否则取值会有1分钟误差.Decimal minuteTemp = Math.Round((hourTemp - hour) * 60, 2);//获取分钟数int minute = Convert.ToInt32(Math.Truncate(minuteTemp));//秒:减掉分钟,( * 60)//这里舍入,否则取值会有1秒误差.Decimal secondTemp = Math.Round((minuteTemp - minute) * 60, 2);//获取秒数int second = Convert.ToInt32(Math.Truncate(secondTemp));if (second >= 60){second -= 60;minute += 1;}if (minute >= 60){minute -= 60;hour += 1;}//时间格式:00:00:00string resultTimes = string.Format("{0}:{1}:{2}",(hour < 10 ? ("0" + hour) : hour.ToString()),(minute < 10 ? ("0" + minute) : minute.ToString()),(second < 10 ? ("0" + second) : second.ToString()));var str = string.Format("{0} {1}", dt.ToString("yyyy-MM-dd"), resultTimes);try{return DateTime.Parse(str);}catch (Exception ex){throw new Exception("DateTime.Parse出错,str：" + str, ex);}}}return default(DateTime);}#endregion}
}

//Aspose.Cells生成xlsx文件帮助类

using Aspose.Cells;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Linq.Expressions;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;namespace YCF.HRMS.Utilities.CommomHelper
{/// <summary>/// Aspose.Cells生成xlsx文件/// </summary>public static class AsposeCellsHelper{public static void CreateExcel<T>(IEnumerable<T> content, string filePath, string sheetName, int startRow,bool setBorder = false, string getColorMethodName = null){var columnsAccessor = CreateColumnsAccessor<T>();var colInvoker = ExpressionHelper.GetMemberAccessor(columnsAccessor);var t = typeof(T);Workbook workbook = new Workbook();var sheet = workbook.Worksheets[0]; ;sheet.Name = sheetName;var freezeAttr = t.GetCustomAttribute<ExcelFreezeAttribute>();//冻结表头if (freezeAttr != null)sheet.FreezePanes(startRow + 1, 0 + 1, freezeAttr.FreezeRowIndex + startRow + 1, freezeAttr.FreezeColumnIndex + 1);var cells = workbook.Worksheets[0].Cells;int rowIndex = startRow;int colIndex = 0;for (int i = 0; i < colInvoker.Count(); i++){var col = colInvoker.ElementAt(i);//删除隐藏属性var widthAttr = col.Key.GetCustomAttribute<ExcelColumnAttribute>();if (widthAttr != null){if (widthAttr.Hide){colInvoker.Remove(col.Key);i--;continue;}}var title = col.Key.Name;var desc = col.Key.GetCustomAttribute<DescriptionAttribute>();if (desc != null)title = desc.Description;else{var display = col.Key.GetCustomAttribute<DisplayAttribute>();if (display != null)title = display.Name;}var myCell = sheet.Cells[rowIndex, colIndex];Style style = myCell.GetStyle();myCell.PutValue(title);style.Font.IsBold = true;style.HorizontalAlignment = TextAlignmentType.Center;style.Font.Name = "宋体";style.Font.Size = 10;if (setBorder){style.Borders[BorderType.BottomBorder].LineStyle = CellBorderType.Thin;style.Borders[BorderType.BottomBorder].Color = System.Drawing.Color.Black;style.Borders[BorderType.TopBorder].LineStyle = CellBorderType.Thin;style.Borders[BorderType.TopBorder].Color = System.Drawing.Color.Black;style.Borders[BorderType.LeftBorder].LineStyle = CellBorderType.Thin;style.Borders[BorderType.LeftBorder].Color = System.Drawing.Color.Black;style.Borders[BorderType.RightBorder].LineStyle = CellBorderType.Thin;style.Borders[BorderType.RightBorder].Color = System.Drawing.Color.Black;}myCell.SetStyle(style);cells.SetColumnWidth(colIndex, 15);colIndex++;}rowIndex++;PropertyInfo[] properties = colInvoker.Keys.OfType<PropertyInfo>().ToArray();Func<T, string> getHtmlColorFunc = null;if(getColorMethodName != null){MethodInfo getColorMethod = typeof(T).GetMethod(getColorMethodName);if (getColorMethod != null){var parameter = Expression.Parameter(typeof(T));getHtmlColorFunc = Expression.Lambda<Func<T, string>>(Expression.Call(parameter, getColorMethod), parameter).Compile();}}//格式Func<PropertyInfo, Cell, Style> colunmnStyles = (p, cell) =>{Style style = cell.GetStyle();var type = p.PropertyType;if (type.IsGenericType){type = type.GetGenericArguments()[0];}if (type == typeof(DateTime)){style.Custom = "yyyyMMdd";}else if (type == typeof(double) || type == typeof(decimal)){style.Custom = "0.00";}style.Font.Name = "宋体";style.Font.Size = 10;return style;};var propertyValueSetter = properties.ToDictionary(p => p, p =>{Action<object, Cell> valueSetter;var type = p.PropertyType;if (type.IsGenericType){type = type.GetGenericArguments()[0];}if (type == typeof(DateTime)){valueSetter = (o, cell) =>{if (o != null){cell.PutValue(Convert.ToDateTime(o));}};}else if (type == typeof(double) || type == typeof(decimal) || type == typeof(int)){valueSetter = (o, cell) =>{if (o != null){cell.PutValue(Convert.ToDouble(o));}};}else{valueSetter = (o, cell) =>{if (o != null){cell.PutValue(o.ToString());}};}return valueSetter;});foreach (var item in content){colIndex = 0;foreach (var propertyInfo in properties){object value = propertyInfo.GetValue(item);var cell = sheet.Cells[rowIndex, colIndex++];propertyValueSetter[propertyInfo](value, cell);var style = colunmnStyles(propertyInfo, cell);if (getHtmlColorFunc != null){style.ForegroundColor = System.Drawing.ColorTranslator.FromHtml(getHtmlColorFunc(item));style.Pattern = BackgroundType.Solid;}if (setBorder){style.Borders[BorderType.BottomBorder].LineStyle = CellBorderType.Thin;style.Borders[BorderType.BottomBorder].Color = System.Drawing.Color.Black;style.Borders[BorderType.TopBorder].LineStyle = CellBorderType.Thin;style.Borders[BorderType.TopBorder].Color = System.Drawing.Color.Black;style.Borders[BorderType.LeftBorder].LineStyle = CellBorderType.Thin;style.Borders[BorderType.LeftBorder].Color = System.Drawing.Color.Black;style.Borders[BorderType.RightBorder].LineStyle = CellBorderType.Thin;style.Borders[BorderType.RightBorder].Color = System.Drawing.Color.Black;}cell.SetStyle(style);}rowIndex++;}workbook.Save(filePath, new Aspose.Cells.OoxmlSaveOptions(Aspose.Cells.SaveFormat.Xlsx));workbook.Worksheets.Clear();}internal static Expression<Func<T, object>> CreateColumnsAccessor<T>(){var type = typeof(T);var ps = type.GetProperties(BindingFlags.Public | BindingFlags.Instance);var bindings = new List<MemberBinding>();var parameter = Expression.Parameter(type, "p");foreach (var p in ps){bindings.Add(Expression.Bind(p, Expression.MakeMemberAccess(parameter, p)));}var creator = Expression.MemberInit(Expression.New(type), bindings);var columnsAccessor = Expression.Lambda<Func<T, object>>(creator, parameter);return columnsAccessor;}}/// <summary>/// 可加的列宽属性/// </summary>/// <seealso cref="System.Attribute" />[AttributeUsage(AttributeTargets.Property)]public class ExcelColumnAttribute : Attribute{public int Width { get; set; }public bool Hide { get; set; }}/// <summary>/// 可加颜色属性/// </summary>/// <seealso cref="System.Attribute" />[AttributeUsage(AttributeTargets.Class)]public class ExcelCellStyleAttribute : Attribute{public string HtmlColorAccessor { get; set; }}/// <summary>/// 可加冻结属性/// </summary>/// <seealso cref="System.Attribute" />[AttributeUsage(AttributeTargets.Class)]public class ExcelFreezeAttribute : Attribute{public int FreezeColumnIndex { get; set; }public int FreezeRowIndex { get; set; }}
}

aspose引用：packages\Aspose.Cells\7.0.3(2011-11-12)\Aspose.Cells.dll

之前写过npoi的读取excel的文章，现在epplus也可以。

对比：

npoi可读写xls和xlsx，epplus只支持读写xlsx. 读写效率应该都差不了多少，写入少量数据可用这两个，大量数据写的话最好要用aspose。

aspose写入速度比npoi和epplus快。

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