321 lines
9.3 KiB
C#
321 lines
9.3 KiB
C#
using System.Data;
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using System.IO;
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using OfficeOpenXml;
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using OfficeOpenXml.Style;
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namespace Sai.Toolkit.Core.Helpers;
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public class EPPlusHelper //公式计算最后需要调用Calculate()
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{
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/// <summary>
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/// DataTable导出为Excel
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/// </summary>
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/// <param name="destFileName"></param>
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/// <param name="dt"></param>
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public static void DataTableToExcel(DataTable dt, string destFileName)
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{
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FileInfo fi = new(destFileName);
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using ExcelPackage package = new(fi);
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try
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{
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var workSheet = package.Workbook.Worksheets.Add(dt.TableName);
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workSheet.Cells["A1"].LoadFromDataTable(dt, true);
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}
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catch (Exception)
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{
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// ignored
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}
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finally
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{
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package.Save();
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}
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}
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/// <summary>
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/// 给第一个表中的单元格赋值
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/// </summary>
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/// <param name="fileName"></param>
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/// <param name="rowNum"></param>
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/// <param name="columnNum"></param>
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/// <param name="value"></param>
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public static void EditCellValue(string fileName, int rowNum, int columnNum, string value)
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{
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FileInfo fi = new(fileName);
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using ExcelPackage package = new(fi);
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//ExcelPackage.LicenseContext = LicenseContext.NonCommercial;
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var sheet = package.Workbook.Worksheets[0];
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//string filename = System.IO.Path.GetFileNameWithoutExtension(fileName);
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sheet.Cells[rowNum, columnNum].Value = value;
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package.Save();
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}
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/// <summary>
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/// 工作表转换为DataTable,首行为表头
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/// </summary>
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/// <param name="worksheet">行列索引从1开始</param>
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/// <returns></returns>
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public static DataTable ExcelSheetToDataTable(ExcelWorksheet worksheet)
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{
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if (worksheet == null)
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{
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return null;
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}
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//获取worksheet的行数
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var rows = worksheet.Dimension.End.Row;
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//获取worksheet的列数
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var cols = worksheet.Dimension.End.Column;
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DataTable dt = new(worksheet.Name);
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DataRow dr = null;
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for (var i = 1; i <= rows; i++)
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{
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if (i > 1)
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{
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dr = dt.Rows.Add();
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}
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for (var 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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var value = worksheet.Cells[i, j].Value;
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if (i == 1)
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{
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dt.Columns.Add(value == null ? $"标题{i}" : value.ToString());
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}
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//剩下的写入datatable
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else
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{
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dr[j - 1] = value == null ? string.Empty : value.ToString();
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}
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}
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}
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return dt;
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}
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/// <summary>
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/// 工作表转换为DataTable
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/// </summary>
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/// <param name="fileName"></param>
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/// <param name="sheetName"></param>
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/// <returns></returns>
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public static DataTable ExcelSheetToDataTable(string fileName, string sheetName)
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{
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FileInfo fi = new(fileName);
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ExcelPackage p = new(fi);
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var workbook = p.Workbook;
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var worksheet = workbook.Worksheets[sheetName];
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return ExcelSheetToDataTable(worksheet);
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}
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/// <summary>
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/// 获取工作表
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/// </summary>
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/// <param name="excelFilePath"></param>
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/// <param name="sheetName"></param>
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/// <returns></returns>
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/// <exception cref="Exception"></exception>
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public static ExcelWorksheet GetExcelWorksheet(string excelFilePath, string sheetName)
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{
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var excelworkbook = new FileInfo(excelFilePath);
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using var p = new ExcelPackage(excelworkbook);
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var ws = p.Workbook.Worksheets[sheetName];
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return ws ?? throw new Exception("工作表不存在。");
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}
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/// <summary>
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/// 读取Excel所有表
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/// </summary>
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/// <param name="filePath"></param>
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public void ReadExcel(string filePath)
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{
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using ExcelPackage package = new(new FileStream(filePath, FileMode.Open));
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for (var i = 1; i <= package.Workbook.Worksheets.Count; ++i)
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{
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var sheet = package.Workbook.Worksheets[i];
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for (int j = sheet.Dimension.Start.Column, k = sheet.Dimension.End.Column; j <= k; j++)
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{
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for (int m = sheet.Dimension.Start.Row, n = sheet.Dimension.End.Row; m <= n; m++)
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{
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//string str = GetValue(sheet, m, j);
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//if (str != null)
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//{
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// // do something
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//}
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}
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}
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}
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}
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/// <summary>
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/// 设置单元格的值
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/// </summary>
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/// <param name="sheet"></param>
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/// <param name="rowNum">1开始</param>
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/// <param name="columnNum">1开始</param>
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/// <param name="value"></param>
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public static void SetCellValue(ExcelWorksheet sheet, int rowNum, int columnNum, string value)
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{
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//sheet.Cells[rowNum, ColumnNum].Value = value;
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sheet.SetValue(rowNum, columnNum, value);
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}
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/// <summary>
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/// 通过单元格名设置值
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/// </summary>
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/// <param name="sheet"></param>
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/// <param name="cellName"></param>
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/// <param name="value"></param>
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public static void SetCellValue(ExcelWorksheet sheet, string cellName, string value)
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{
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sheet.Cells[cellName].Value = value;
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}
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/// <summary>
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/// 给工作表中的单元格赋值
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/// </summary>
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/// <param name="fileName"></param>
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/// <param name="sheetname"></param>
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/// <param name="rowNum"></param>
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/// <param name="columnNum"></param>
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/// <param name="value"></param>
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public static void SetCellValue(string fileName, string sheetname, int rowNum, int columnNum, string value)
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{
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FileInfo fi = new(fileName);
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using ExcelPackage package = new(fi);
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//ExcelPackage.LicenseContext = LicenseContext.NonCommercial;
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var sheet = package.Workbook.Worksheets[sheetname];
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//string filename = System.IO.Path.GetFileNameWithoutExtension(fileName);
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sheet.SetValue(rowNum, columnNum, value);
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package.Save();
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}
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/// <summary>
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/// 给工作表中的单元格赋值
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/// </summary>
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/// <param name="fileName"></param>
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/// <param name="sheetname"></param>
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/// <param name="cellName">单元格名称，比如A1</param>
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/// <param name="value"></param>
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public static void SetCellValue(string fileName, string sheetname, string cellName, string value)
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{
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FileInfo fi = new(fileName);
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using ExcelPackage package = new(fi);
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//ExcelPackage.LicenseContext = LicenseContext.NonCommercial;
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var sheet = package.Workbook.Worksheets[sheetname];
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//string filename = System.IO.Path.GetFileNameWithoutExtension(fileName);
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sheet.Cells[cellName].Value = value;
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package.Save();
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}
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/// <summary>
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/// 给工作表中的单元格赋值
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/// </summary>
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/// <param name="fileName"></param>
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/// <param name="index">表索引，0开始</param>
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/// <param name="cellName">单元格名称，如A1</param>
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/// <param name="value"></param>
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public static void SetCellValue(string fileName, int index, string cellName, string value)
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{
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FileInfo fi = new(fileName);
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using ExcelPackage package = new(fi);
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//ExcelPackage.LicenseContext = LicenseContext.NonCommercial;
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var sheet = package.Workbook.Worksheets[index];
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//string filename = System.IO.Path.GetFileNameWithoutExtension(fileName);
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sheet.Cells[cellName].Value = value;
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package.Save();
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}
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/// <summary>
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/// 设置样式
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/// </summary>
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/// <param name="sheet"></param>
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/// <param name="fromRow"></param>
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/// <param name="fromCol"></param>
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/// <param name="toRow"></param>
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/// <param name="toCol"></param>
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public static void SetStyle(ExcelWorksheet sheet, int fromRow, int fromCol, int toRow, int toCol)
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{
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using var range = sheet.Cells[fromRow, fromCol, toRow, toCol];
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//range.Style.Font.Name = "微软雅黑";
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range.Style.HorizontalAlignment = ExcelHorizontalAlignment.Center;
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range.Style.Font.Size = 12;
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range.Style.Border.Top.Style = ExcelBorderStyle.Thin;
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range.Style.Border.Bottom.Style = ExcelBorderStyle.Thin;
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range.Style.Border.Left.Style = ExcelBorderStyle.Thin;
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range.Style.Border.Right.Style = ExcelBorderStyle.Thin;
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//range.Style.SetBackgroundColor(System.Drawing.SelectedColor.FromArgb(142, 169, 219));
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}
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/// <summary>
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/// 设置表头样式
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/// </summary>
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/// <param name="sheet"></param>
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/// <param name="fromRow"></param>
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/// <param name="fromCol"></param>
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/// <param name="toRow"></param>
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/// <param name="toCol"></param>
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public static void SetTitle(ExcelWorksheet sheet, int fromRow, int fromCol, int toRow, int toCol)
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{
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using var range = sheet.Cells[fromRow, fromCol, toRow, toCol];
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range.Style.Font.Name = "微软雅黑";
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range.Style.HorizontalAlignment = ExcelHorizontalAlignment.Center;
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range.Style.Font.Size = 14;
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range.Style.Font.Bold = true;
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range.Style.Border.Top.Style = ExcelBorderStyle.Thin;
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range.Style.Border.Bottom.Style = ExcelBorderStyle.Thin;
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range.Style.Border.Left.Style = ExcelBorderStyle.Thin;
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range.Style.Border.Right.Style = ExcelBorderStyle.Thin;
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//range.SetBackgroundColor(System.Drawing.SelectedColor.FromArgb(142, 169, 219));
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}
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/// <summary>
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/// 创建Excel文件添加Excel表格
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/// </summary>
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/// <param name="filePath"></param>
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/// <param name="sheetName"></param>
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/// <param name="action"></param>
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public static void WriteExcel(string filePath, string sheetName, Action<ExcelPackage> action)
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{
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using ExcelPackage package = new();
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var sheet = package.Workbook.Worksheets.Add(sheetName);
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using Stream stream = new FileStream(filePath, FileMode.Create);
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action(package);
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package.SaveAs(stream);
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}
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/// <summary>
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/// 写入Excel
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/// </summary>
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/// <param name="filePath"></param>
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/// <param name="action"></param>
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public static void WriteExcel(string filePath, Action<ExcelPackage> action)
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{
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var fileInfo = new FileInfo(filePath);
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if (fileInfo.Exists)
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{
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try
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{
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fileInfo.Delete();
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}
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catch (IOException)
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{
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throw new IOException("文件正在使用");
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}
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using ExcelPackage package = new(fileInfo);
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action(package);
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package.Save();
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}
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else
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{
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using ExcelPackage package = new(fileInfo);
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action(package);
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package.Save();
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//throw new ArgumentNullException();
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}
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}
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}
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