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391 lines
14 KiB
391 lines
14 KiB
1 year ago
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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.Diagnostics;
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using System.Drawing;
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using System.IO;
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using System.Windows.Forms;
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using OfficeOpenXml;
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using OfficeOpenXml.Style;
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using CK.SCP.Utils;
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namespace ChangkeTec.Utils
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{
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public class EpPlusHelper
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{
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private DataSet _dsExcel;
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private DataTable _dtExcel;
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private string _excelFileName;
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private List<string> _readSheetNames;
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private BackgroundWorker _bgw;
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private string _pasword = string.Empty;
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public Action<DataTable> ReadCompleted;
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readonly SaveFileDialog _sfd = new SaveFileDialog
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{
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Filter = "Excel 工作簿 (*.xlsx)|*.xlsx",
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CheckFileExists = false,
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CheckPathExists = false,
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FilterIndex = 0,
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RestoreDirectory = true,
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CreatePrompt = false,
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Title = "保存为Excel文件"
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};
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public EpPlusHelper()
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{
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_bgw = new BackgroundWorker { WorkerReportsProgress = true, WorkerSupportsCancellation = true };
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}
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#region Read
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public void ReadExcelToDt(string fileName, string password = "")
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{
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_excelFileName = fileName;
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_pasword = password;
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var excelFileExt = GetFileExt(fileName);
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switch (excelFileExt)
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{
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case ".XLSX":
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var poDv = new ProcessOperator { BackgroundWork = ReadExcelToDataTable };
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poDv.BackgroundWorkerCompleted += ReadExcel_Completed;
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poDv.Start();
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break;
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case ".XLS":
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throw new Exception($"需要使用NPOI解析后缀名为{excelFileExt}的文件！");
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default:
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throw new Exception($"无法解析后缀名为{excelFileExt}的文件！");
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}
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//return _dtExcel;
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}
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private DataTable ReadData(ExcelWorksheet sheet)
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{
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var dt = new DataTable(sheet.Name);
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int colStart = sheet.Dimension.Start.Column;
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int colEnd = sheet.Dimension.End.Column;
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int rowStart = sheet.Dimension.Start.Row;
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int rowEnd = sheet.Dimension.End.Row;
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for (var i = colStart; i < colEnd + 1; i++)//从1开始计数
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{
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var columnName = sheet.Cells[rowStart, i].Value?.ToString();
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dt.Columns.Add(columnName);
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}
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for (var row = rowStart + 1; row < rowEnd + 1; row++)//从1开始计数，跳过第一行
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{
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var dr = dt.NewRow();
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for (var col = colStart; col < colEnd + 1; col++)//从1开始计数
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{
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dr[col - 1] = sheet.Cells[row, col]?.Value?.ToString();
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}
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dt.Rows.Add(dr);
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}
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RemoveEmptyRow(dt);
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return dt;
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}
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private void ReadExcelToDataTable()
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{
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_readSheetNames = new List<string>();
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_dsExcel = new DataSet();
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var fs = new FileStream(_excelFileName, FileMode.Open);
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try
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{
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using (
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var package = string.IsNullOrEmpty(_pasword)
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? new ExcelPackage(fs)
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: new ExcelPackage(fs, _pasword)
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)
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{
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var validSheetList = GetValidSheetList(package);
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if (validSheetList.Count == 0) throw new Exception("未找到有效的Excel表单");
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var sheet = validSheetList[0];
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_readSheetNames.Add(sheet.Name);
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_dtExcel = ReadData(sheet);
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}
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}
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finally
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{
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fs.Close();
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fs.Dispose();
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}
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}
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private void ReadExcel_Completed(object sender, BackgroundWorkerEventArgs e)
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{
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if (e.BackGroundException == null)
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{
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if (_readSheetNames == null || _readSheetNames.Count == 0)
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{
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throw new Exception("文件读失败，未找到符合的系统要求的工作表！");
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}
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else if (ReadCompleted != null)
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{
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ReadCompleted(_dtExcel);
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}
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}
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else
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{
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throw new Exception("文件读取失败,请联系管理员！");
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}
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}
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private List<ExcelWorksheet> GetValidSheetList(ExcelPackage package)
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{
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var list = new List<ExcelWorksheet>();
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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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var tableName = sheet.Name;
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if (!tableName.Equals("_xlnm#_FilterDatabase") &&
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tableName.IndexOf("_", StringComparison.Ordinal) != tableName.Length - 1 &&
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tableName.IndexOf("FilterDatabase", StringComparison.Ordinal) == -1)
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{
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list.Add(sheet);
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}
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}
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return list;
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}
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private void GetFileName(string fileName)
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{
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_excelFileName = fileName;
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}
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private string GetFileExt(string fileName)
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{
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return Path.GetExtension(fileName)?.ToUpper();
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}
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#endregion
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#region Write
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public void WriteDsToExcel(DataSet ds, string password = "")
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{
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if (_sfd.ShowDialog() != DialogResult.OK) return;
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var fileName = _sfd.FileName;
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WriteDsToExcel(ds, fileName, password);
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}
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public void WriteDsToExcel(DataSet ds, string excelFileName, string password)
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{
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if (ds == null || ds.Tables.Count == 0)
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throw new Exception("当前表单没有任何数据");
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var poDv = new ProcessOperator
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{
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BackgroundWork = () => WriteDataSetToExcel(ds, excelFileName, password)
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};
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poDv.BackgroundWorkerCompleted += WriteExcel_Completed;
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poDv.Start();
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}
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private void WriteDataSetToExcel(DataSet ds, string excelFileName, string password)
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{
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var newFile = GetNewFile(excelFileName);
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_excelFileName = excelFileName;
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using (var package = string.IsNullOrEmpty(password) ? new ExcelPackage(newFile) : new ExcelPackage(newFile, password))
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{
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foreach (DataTable dt in ds.Tables)
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{
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if (string.IsNullOrEmpty(dt?.TableName) || dt.Rows.Count == 0) continue;
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EpPlusHelper.RemoveEmptyRow(dt);
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var sheetName = "sheet1";
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if (!string.IsNullOrEmpty(dt.TableName))
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sheetName = dt.TableName;
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var worksheet = package.Workbook.Worksheets.Add(sheetName);
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//表头
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SetTitle(dt, worksheet);
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//各行数据
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SetData(dt, worksheet);
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//设置单元格格式
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SetFormat(worksheet);
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}
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if (package.Workbook.Worksheets.Count <= 0) return;
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if (string.IsNullOrEmpty(password))
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package.Save();
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else
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package.Save(password);
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}
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}
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public void WriteDtToExcel(DataTable dt, string password = "")
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{
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if (_sfd.ShowDialog() != DialogResult.OK) return;
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var fileName = _sfd.FileName;
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WriteDtToExcel(dt, fileName, password);
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}
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public void WriteDtToExcel(DataTable dt, string excelFileName, string password)
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{
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var excelFileExt = GetFileExt(excelFileName);
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switch (excelFileExt)
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{
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case ".XLSX":
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if (dt == null || dt.Rows.Count <= 0) throw new Exception("当前表单没有任何数据");
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var poDv = new ProcessOperator { BackgroundWork = () => WriteDataTableToExcel(dt, excelFileName, password) };
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poDv.BackgroundWorkerCompleted += WriteExcel_Completed;
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poDv.Start();
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break;
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case ".XLS":
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throw new Exception($"需要使用NPOI解析后缀名为{excelFileExt}的文件！");
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default:
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throw new Exception($"无法解析后缀名为{excelFileExt}的文件！");
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}
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}
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private static FileInfo GetNewFile(string excelFileName)
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{
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var newFile = new FileInfo(excelFileName);
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if (newFile.Exists)
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{
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newFile.Delete(); // ensures we create a new workbook
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newFile = new FileInfo(excelFileName);
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}
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return newFile;
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}
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private void WriteDataTableToExcel(DataTable dt, string excelFileName, string password)
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{
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var newFile = GetNewFile(excelFileName);
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_excelFileName = excelFileName;
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using (var package = string.IsNullOrEmpty(password) ? new ExcelPackage(newFile) : new ExcelPackage(newFile, password))
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{
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var sheetName = "sheet1";
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if (!string.IsNullOrEmpty(dt.TableName))
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sheetName = dt.TableName;
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using (var worksheet = package.Workbook.Worksheets.Add(sheetName))
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{
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//表头
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SetTitle(dt, worksheet);
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//各行数据
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SetData(dt, worksheet);
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//设置单元格格式
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SetFormat(worksheet);
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if (string.IsNullOrEmpty(password))
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package.Save();
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else
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package.Save(password);
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}
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}
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}
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private void WriteExcel_Completed(object sender, BackgroundWorkerEventArgs e)
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{
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var newFile = new FileInfo(_excelFileName);
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if (newFile.Exists)
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Process.Start(_excelFileName);
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}
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private static void SetFormat(ExcelWorksheet worksheet)
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{
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if (worksheet.Dimension == null) return;
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int colStart = worksheet.Dimension.Start.Column;
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int colEnd = worksheet.Dimension.End.Column;
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int rowStart = worksheet.Dimension.Start.Row;
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int rowEnd = worksheet.Dimension.End.Row;
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// using (var range = worksheet.Cells[1, 1, 1, dt.Columns.Count])
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using (var range = worksheet.Cells[rowStart, colStart, rowStart, colEnd])
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{
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range.Style.Fill.PatternType = ExcelFillStyle.LightGrid;
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range.Style.Fill.BackgroundColor.SetColor(Color.LightYellow);
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range.Style.HorizontalAlignment = ExcelHorizontalAlignment.CenterContinuous;
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}
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// using (var range = worksheet.Cells[1, 1, dt.Rows.Count + 1, dt.Columns.Count])
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using (var range = worksheet.Cells[rowStart, colStart, rowEnd, colEnd])
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{
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range.Style.Border.BorderAround(ExcelBorderStyle.Thin);
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range.Style.Font.Name = "微软雅黑";
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range.Style.Font.Size = 12;
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range.AutoFitColumns();
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}
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}
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private static void SetData(DataTable dt, ExcelWorksheet worksheet)
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{
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for (int i = 0; i < dt.Rows.Count; i++)
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{
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var row = i + 2;
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for (int j = 0; j < dt.Columns.Count; j++)
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{
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var col = j + 1;
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var s = dt.Rows[i][j];
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//////////////////
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//格式化日期字段
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var dc = dt.Columns[j];
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if (dc.DataType.FullName == "System.DateTime")
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{
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DateTime time;
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DateTime.TryParse(s.ToString(), out time);
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s = time.ToString("yyyy-MM-dd HH:mm:ss");
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}
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//使用EPPLUS貌似不需要做这个转换了？
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// if (dc.DataType.FullName == "System.String")
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// {
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// s = "'" + s;
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// }
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decimal d;
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if (decimal.TryParse(s.ToString(), out d))
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{
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if (Math.Round(d, 5) == 0)
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{
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s = 0;
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}
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}
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worksheet.Cells[row, col].Value = s;
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}
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}
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}
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private static void SetTitle(DataTable dt, ExcelWorksheet worksheet)
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{
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int row = 1;
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for (int i = 0; i < dt.Columns.Count; i++)
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{
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var dc = dt.Columns[i];
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row = 1;
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var col = i + 1;
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worksheet.Cells[row, col].Value = dc.ColumnName;
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}
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worksheet.View.FreezePanes(row + 1, 1); //冻结表头
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}
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#endregion
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public static void RemoveEmptyRow(DataTable dt)
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{
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if (dt == null || dt.Rows.Count == 0)
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return;
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var isEmpty = true;
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for (var idx = dt.Rows.Count - 1; idx >= 0; idx--)
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{
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var dr = dt.Rows[idx];
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for (var i = 0; i < dt.Columns.Count; i++)
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{
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if (dr[i].ToString().Trim() != string.Empty)
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{
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isEmpty = false;
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}
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}
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if (isEmpty)
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dt.Rows.Remove(dr);
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}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|