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