305 lines
13 KiB
C#
305 lines
13 KiB
C#
using DocumentFormat.OpenXml.Packaging;
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using DocumentFormat.OpenXml.Spreadsheet;
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using Foresight.Data;
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using System;
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using System.Collections.Generic;
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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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using System.Text;
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using System.Threading.Tasks;
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namespace IronIntel.Contractor.ExportExcel
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{
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/// <summary>
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/// Excel 导入。提供对xlsx文件的解析
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/// </summary>
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public class ImportFromExcel
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{
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/// <summary>
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/// 解析excel数据
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/// </summary>
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/// <param name="excelBytes">Excel Data</param>
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/// <returns></returns>
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public DataTable LoadExcelData(byte[] excelBytes, int headerrowindex = 1)
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{
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return LoadExcelData(excelBytes, "", headerrowindex);
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}
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public DataTable[] LoadAllExcelData(byte[] excelBytes)
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{
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MemoryStream stream = null;
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List<DataTable> list = new List<DataTable>();
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try
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{
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stream = new MemoryStream(excelBytes);
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using (SpreadsheetDocument sdoc = SpreadsheetDocument.Open(stream, false))
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{
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foreach (Sheet sheet in sdoc.WorkbookPart.Workbook.Descendants<Sheet>())
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{
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if (sheet != null)
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{
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WorksheetPart wsp = (WorksheetPart)sdoc.WorkbookPart.GetPartById(sheet.Id);
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Worksheet ws = wsp.Worksheet;
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//取Cell值的时候使用
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SharedStringTablePart tablePart = sdoc.WorkbookPart.SharedStringTablePart;
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//得到第一个工作表的所有行
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IEnumerable<Row> rows = ws.Descendants<Row>();
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//第一行是标题，标题作为表的列名
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Row headerRow = rows.First();
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DataTable excelData = new DataTable(sheet.Name);
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string columnName = "";
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foreach (Cell hc in headerRow)
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{
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columnName = GetCellValue(hc, tablePart);
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excelData.Columns.Add(columnName, GetCellDataType(hc));
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}
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//装载数据到DataTable里面
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foreach (Row row in rows)
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{
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if (row.RowIndex == 1) continue;
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DataRow excelRow = excelData.NewRow();
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int i = 0;
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foreach (Cell cell in row)
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{
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excelRow[i] = GetCellValue(cell, tablePart);
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i++;
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}
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excelData.Rows.Add(excelRow);
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}
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list.Add(excelData);
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}
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}
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}
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}
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catch
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{
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//解析过程中出错误了，TODO
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}
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finally
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{
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if (stream != null) stream.Close();
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}
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return list.ToArray();
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}
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public DataTable LoadExcelDataByClient(byte[] excelBytes)
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{
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DataTable[] dts = ExcelClient.GetTables(excelBytes, true, true);
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if(dts != null && dts.Length > 0)
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{
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return dts[0];
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}
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return null;
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}
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/// <summary>
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/// 解析excel数据
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/// </summary>
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/// <param name="excelBytes">Excel Data</param>
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/// <param name="sheetName">Sheet Name</param>
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/// <returns></returns>
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public DataTable LoadExcelData(byte[] excelBytes, string sheetName, int headerrowindex)
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{
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MemoryStream stream = null;
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try
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{
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stream = new MemoryStream(excelBytes);
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using (SpreadsheetDocument sdoc = SpreadsheetDocument.Open(stream, false))
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{
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Sheet sheet = null;
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if (string.IsNullOrEmpty(sheetName))//没有特定的sheetname的时候，取第一个sheet
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sheet = sdoc.WorkbookPart.Workbook.Descendants<Sheet>().FirstOrDefault();
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else//根据sheetname取特定sheet
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sheet = sdoc.WorkbookPart.Workbook.Descendants<Sheet>().Where((s) => s.Name == sheetName).First();
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if (sheet != null)
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{
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WorksheetPart wsp = (WorksheetPart)sdoc.WorkbookPart.GetPartById(sheet.Id);
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WorkbookStylesPart stylepart = sdoc.WorkbookPart.GetPartsOfType<WorkbookStylesPart>().FirstOrDefault();
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Worksheet ws = wsp.Worksheet;
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//取Cell值的时候使用
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SharedStringTablePart tablePart = sdoc.WorkbookPart.SharedStringTablePart;
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//得到第一个工作表的所有行
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IEnumerable<Row> rows = ws.Descendants<Row>();
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//第一行是标题，标题作为表的列名
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Row headerRow = rows.ElementAt(headerrowindex - 1);//.First();
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DataTable excelData = new DataTable(sheet.Name);
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string columnName = "";
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foreach (Cell hc in headerRow)
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{
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columnName = GetCellValue(hc, tablePart);
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excelData.Columns.Add(columnName, GetCellDataType(hc));
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if (hc.CellReference != null)
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{
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var colref = System.Text.RegularExpressions.Regex.Replace(hc.CellReference.Value, @"\d", "");//C30->C
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excelData.Columns[excelData.Columns.Count - 1].Caption = colref;
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}
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}
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//装载数据到DataTable里面
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foreach (Row row in rows)
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{
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if (row.RowIndex <= headerrowindex) continue;
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DataRow excelRow = excelData.NewRow();
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int i = 0;
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foreach (Cell cell in row)
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{
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if (cell.CellReference != null)//row不包含未输入的单元
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{
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var colref = System.Text.RegularExpressions.Regex.Replace(cell.CellReference.Value, @"\d", "");//C30->C
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int j = i;
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while (j < excelData.Columns.Count && excelData.Columns[j].Caption != colref)
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{
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j++;
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}
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if (excelData.Columns[j].Caption == colref)
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{
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excelRow[j] = GetCellValue(cell, tablePart, stylepart);
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}
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}
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else
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{
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excelRow[i] = GetCellValue(cell, tablePart, stylepart);
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}
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i++;
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}
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excelData.Rows.Add(excelRow);
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}
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return excelData;
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}
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}
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}
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catch (Exception ex)
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{
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//解析过程中出错误了，TODO
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}
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finally
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{
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if (stream != null) stream.Close();
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}
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return null;
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}
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/// <summary>
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/// 得到Excel 中 Cell的值
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/// </summary>
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/// <param name="c">Cell</param>
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/// <param name="stp"></param>
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/// <returns></returns>
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private string GetCellValue(Cell cell, SharedStringTablePart stringTablePart, WorkbookStylesPart stylepart = null)
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{
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if (cell.ChildElements.Count == 0) return "";
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string value = cell.CellValue.InnerText;
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if (cell.DataType != null && cell.DataType == CellValues.SharedString)
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{
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value = stringTablePart.SharedStringTable.ChildElements[int.Parse(value)].InnerText;
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}
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else if (cell.StyleIndex != null && cell.StyleIndex > 0 && stylepart != null)
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{
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try
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{
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//int formatStyleIndex = Convert.ToInt32(cell.StyleIndex.Value);
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//CellFormat cf = (CellFormat)stylepart.Stylesheet.CellFormats.ElementAt(formatStyleIndex);
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//if (cf.NumberFormatId != null)
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//{
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// var numberFormatId = cf.NumberFormatId.Value;
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// if (stylepart.Stylesheet.NumberingFormats != null)
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// {
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// var numberingFormat = stylepart.Stylesheet.NumberingFormats.Cast<NumberingFormat>().Single(f => f.NumberFormatId.Value == numberFormatId);
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// if(numberingFormat != null)
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// {
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// double dd = 0;
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// if (double.TryParse(value, out dd))
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// {
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// return dd.ToString(numberingFormat.FormatCode.Value);
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// }
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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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// value = cell.InnerText;
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//}
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double d = 0;
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if (double.TryParse(value, out d))
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{
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value = d.ToString();
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CellFormat cf = (CellFormat)stylepart.Stylesheet.CellFormats.ElementAt((int)cell.StyleIndex.Value);
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if (cf.NumberFormatId >= 14 && cf.NumberFormatId <= 22)//Date
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{
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value = DateTime.FromOADate(d).ToString("M/d/yyyy");
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}
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}
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}
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catch { }
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}
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return value;
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}
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/// <summary>
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/// 得到单元格类型
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/// </summary>
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/// <param name="cell">Cell</param>
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/// <returns></returns>
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private Type GetCellDataType(Cell cell)
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{
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if (cell.DataType == null) return typeof(string);
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if (cell.DataType == CellValues.Date)
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return typeof(DateTime);
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if (cell.DataType == CellValues.Number)
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return typeof(decimal);
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return typeof(string);
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}
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public string[] LoadExcelColumnHead(byte[] excelBytes, int headerrowindex = 1)
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{
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return LoadExcelColumnHead(excelBytes, "", headerrowindex);
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}
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public string[] LoadExcelColumnHead(byte[] excelBytes, string sheetName, int headerrowindex)
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{
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MemoryStream stream = null;
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try
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{
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stream = new MemoryStream(excelBytes);
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using (SpreadsheetDocument sdoc = SpreadsheetDocument.Open(stream, false))
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{
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Sheet sheet = null;
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if (string.IsNullOrEmpty(sheetName))//没有特定的sheetname的时候，取第一个sheet
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sheet = sdoc.WorkbookPart.Workbook.Descendants<Sheet>().FirstOrDefault();
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else//根据sheetname取特定sheet
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sheet = sdoc.WorkbookPart.Workbook.Descendants<Sheet>().Where((s) => s.Name == sheetName).First();
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if (sheet != null)
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{
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WorksheetPart wsp = (WorksheetPart)sdoc.WorkbookPart.GetPartById(sheet.Id);
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Worksheet ws = wsp.Worksheet;
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//取Cell值的时候使用
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SharedStringTablePart tablePart = sdoc.WorkbookPart.SharedStringTablePart;
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//得到第一个工作表的所有行
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IEnumerable<Row> rows = ws.Descendants<Row>();
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//第一行是标题，标题作为表的列名
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Row headerRow = rows.ElementAt(headerrowindex - 1);//.First();
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List<string> ls = new List<string>();
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foreach (Cell hc in headerRow)
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{
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string columnName = "";
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columnName = GetCellValue(hc, tablePart);
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ls.Add(columnName);
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}
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return ls.ToArray();
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}
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}
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}
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catch (Exception ex)
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{
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//解析过程中出错误了，TODO
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}
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finally
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{
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if (stream != null) stream.Close();
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}
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return null;
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}
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}
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}
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