using OfficeOpenXml;
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using OfficeOpenXml.Style;
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.IO;
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using System.Linq;
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namespace Bro.M071.DBManager
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{
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public class ExcelExportSet
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{
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public List<string> Worksheets { get; set; }
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/// <summary>
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/// Key： Worksheet的名称 Value:Worksheet对应的列名集合(key 为要导出的列名 value 为导出后显示的列名)
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/// </summary>
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public Dictionary<string, Dictionary<string, string>> WorksheetColumns { get; set; }
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public Dictionary<string, DataTable> WorksheetDataTable { get; set; }
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public ExcelExportSet()
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{
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Worksheets = new List<string>();
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WorksheetColumns = new Dictionary<string, Dictionary<string, string>>();
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WorksheetDataTable = new Dictionary<string, DataTable>();
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}
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}
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/// <summary>
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/// Excel导出帮助类
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/// </summary>
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public class ExcelExportHelper
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{
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public static string ExcelContentType => "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
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/// <summary>
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/// List转DataTable
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="data"></param>
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/// <returns></returns>
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public static DataTable ListToDataTable<T>(List<T> data, Dictionary<string, string> worksheetColumns)
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{
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PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(typeof(T));
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DataTable dataTable = new DataTable();
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Dictionary<string, string> tempColumns = new Dictionary<string, string>();
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foreach (var column in worksheetColumns)
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{
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PropertyDescriptor property = properties.Find(column.Key, true);
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if (property != null)
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{
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dataTable.Columns.Add(column.Value, Nullable.GetUnderlyingType(property.PropertyType) ?? property.PropertyType);
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tempColumns[column.Key] = column.Value;
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}
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}
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object[] values = new object[tempColumns.Count];
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foreach (T item in data)
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{
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for (int i = 0; i < tempColumns.Count; i++)
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{
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PropertyDescriptor property = properties.Find(tempColumns.ElementAt(i).Key, true);
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values[i] = property.GetValue(item);
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}
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dataTable.Rows.Add(values);
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}
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return dataTable;
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}
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/// <summary>
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/// 导出Excel
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/// </summary>
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/// <param name="dataTable">数据源</param>
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/// <param name="worksheet">工作簿Worksheet</param>
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/// <param name="showSrNo">//是否显示行编号</param>
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/// <param name="columnsToTake">要导出的列</param>
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/// <returns></returns>
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public static byte[] ExportExcel(ExcelExportSet excelExportDto, bool showSrNo = false)
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{
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//ExcelPackage.LicenseContext = LicenseContext.Commercial; 5.0以上版本 需要授权
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byte[] result = null;
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using (ExcelPackage package = new ExcelPackage())
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{
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foreach (var worksheet in excelExportDto.Worksheets)
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{
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var dataTable = excelExportDto.WorksheetDataTable[worksheet];
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ExcelWorksheet workSheet = package.Workbook.Worksheets.Add($"{worksheet}");
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//int startRowFrom = string.IsNullOrEmpty(worksheet) ? 1 : 3; //开始的行
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int startRowFrom = 1; //开始的行
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//是否显示行编号
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if (showSrNo)
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{
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DataColumn dataColumn = dataTable.Columns.Add("#", typeof(int));
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dataColumn.SetOrdinal(0);
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int index = 1;
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foreach (DataRow item in dataTable.Rows)
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{
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item[0] = index;
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index++;
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}
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}
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//Add Content Into the Excel File
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workSheet.Cells["A" + startRowFrom].LoadFromDataTable(dataTable, true);
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for (int columnIndex = 1; columnIndex <= dataTable.Columns.Count; columnIndex++)
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{
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// autofit width of cells with small content
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ExcelRange columnCells = workSheet.Cells[workSheet.Dimension.Start.Row, columnIndex, workSheet.Dimension.End.Row, columnIndex];
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int maxLength = columnCells.Max(cell => cell.Value.ToString().Count());
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if (maxLength < 150)
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{
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workSheet.Column(columnIndex).AutoFit();
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}
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// 设置NG单元格样式
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for (int rowIndex = 1; rowIndex <= dataTable.Rows.Count; rowIndex++)
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{
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if (columnCells[rowIndex, columnIndex].Text == "NG")
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{
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workSheet.Cells[rowIndex, columnIndex].Style.Font.Bold = true;//字体为粗体
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workSheet.Cells[rowIndex, columnIndex].Style.Fill.PatternType = ExcelFillStyle.Solid;
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workSheet.Cells[rowIndex, columnIndex].Style.Fill.BackgroundColor.SetColor(System.Drawing.ColorTranslator.FromHtml("#E33E33"));// 设置填充样式
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}
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}
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}
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// format header - bold, yellow on black 设置表头样式
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using (ExcelRange r = workSheet.Cells[startRowFrom, 1, startRowFrom, dataTable.Columns.Count])
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{
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r.Style.Font.Color.SetColor(System.Drawing.Color.White);
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r.Style.Font.Bold = true;
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r.Style.Fill.PatternType = ExcelFillStyle.Solid;
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r.Style.Fill.BackgroundColor.SetColor(System.Drawing.ColorTranslator.FromHtml("#1fb5ad"));
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}
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// format cells - add borders
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using (ExcelRange r = workSheet.Cells[startRowFrom + 1, 1, startRowFrom + dataTable.Rows.Count, dataTable.Columns.Count])
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{
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r.Style.Border.Top.Style = ExcelBorderStyle.Thin;
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r.Style.Border.Bottom.Style = ExcelBorderStyle.Thin;
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r.Style.Border.Left.Style = ExcelBorderStyle.Thin;
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r.Style.Border.Right.Style = ExcelBorderStyle.Thin;
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r.Style.Border.Top.Color.SetColor(System.Drawing.Color.Black);
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r.Style.Border.Bottom.Color.SetColor(System.Drawing.Color.Black);
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r.Style.Border.Left.Color.SetColor(System.Drawing.Color.Black);
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r.Style.Border.Right.Color.SetColor(System.Drawing.Color.Black);
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}
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//将sheet写入表中
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//if (!string.IsNullOrEmpty(worksheet))
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//{
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// workSheet.Cells["A1"].Value = worksheet;
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// workSheet.Cells["A1"].Style.Font.Size = 20;
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// workSheet.InsertColumn(1, 1);
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// workSheet.InsertRow(1, 1);
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// workSheet.Column(1).Width = 5;
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//}
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}
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result = package.GetAsByteArray();
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}
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return result;
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}
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/// <summary>
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/// 新建 或 追加 写入Excel
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/// </summary>
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/// <param name="excelExportDto"></param>
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/// <param name="fileName">要写入的文件名(全路径名)</param>
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/// <param name="showSrNo"></param>
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/// <returns></returns>
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public static byte[] CreateOrAppendExcel(ExcelExportSet excelExportDto, string fileName, bool showSrNo = false)
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{
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byte[] result = null;
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bool isExist = File.Exists(fileName);
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ExcelExportSet newExcelSet = new ExcelExportSet();
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if (isExist)
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{
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var oldWorksheetDataTable = WorksheetToTable(fileName, excelExportDto.Worksheets);
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newExcelSet.Worksheets = excelExportDto.Worksheets;
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newExcelSet.WorksheetColumns = excelExportDto.WorksheetColumns;
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foreach (var sheet in excelExportDto.Worksheets)
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{
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var oldTable = oldWorksheetDataTable[sheet];
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newExcelSet.WorksheetDataTable[sheet] = oldTable;
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if (excelExportDto.WorksheetDataTable[sheet].Rows.Count > 0)
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{
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//合并两个 datatable
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newExcelSet.WorksheetDataTable[sheet].Merge(excelExportDto.WorksheetDataTable[sheet]);
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}
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}
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}
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else
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{
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newExcelSet = excelExportDto;
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}
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result = ExportExcel(newExcelSet, showSrNo);
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return result;
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}
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/// <summary>
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///将指定的Excel的文件转换成DataTable （Excel的指定sheet）
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/// </summary>
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/// <param name="fullFielPath">文件的绝对路径</param>
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/// <returns></returns>
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public static Dictionary<string, DataTable> WorksheetToTable(string fullFielPath, List<string> worksheets)
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{
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try
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{
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var resultWorksheetDataTable = new Dictionary<string, DataTable>();
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FileInfo existingFile = new FileInfo(fullFielPath);
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ExcelPackage package = new ExcelPackage(existingFile);
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foreach (var sheet in worksheets)
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{
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ExcelWorksheet worksheet = package.Workbook.Worksheets[sheet];//选定 指定页
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var dataTable = WorksheetToTable(worksheet);
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resultWorksheetDataTable[sheet] = dataTable;
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}
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return resultWorksheetDataTable;
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}
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catch (Exception)
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{
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throw;
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}
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}
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/// <summary>
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/// 将worksheet转成datatable
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/// </summary>
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/// <param name="worksheet">待处理的worksheet</param>
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/// <returns>返回处理后的datatable</returns>
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public static DataTable WorksheetToTable(ExcelWorksheet worksheet)
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{
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//获取worksheet的行数
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int rows = worksheet.Dimension.End.Row;
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//获取worksheet的列数
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int cols = worksheet.Dimension.End.Column;
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DataTable dt = new DataTable(worksheet.Name);
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DataRow dr = null;
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for (int i = 1; i <= rows; i++)
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{
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if (i > 1)
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dr = dt.Rows.Add();
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for (int j = 1; j <= cols; j++)
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{
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//默认将第一行设置为datatable的标题
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if (i == 1)
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dt.Columns.Add(GetString(worksheet.Cells[i, j].Value));
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//剩下的写入datatable
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else
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dr[j - 1] = GetString(worksheet.Cells[i, j].Value);
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}
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}
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return dt;
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}
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private static string GetString(object obj)
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{
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try
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{
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return obj.ToString();
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}
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catch (Exception)
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{
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return "";
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}
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}
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}
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}
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