using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations.Schema;
using System.Data;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using NPOI.HSSF.UserModel;
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
using System.Configuration;
using System.Linq.Expressions;
using System.Reflection;
using DocumentFormat.OpenXml;
using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml.Spreadsheet;
using CellType = NPOI.SS.UserModel.CellType;
using CellValue = DocumentFormat.OpenXml.Spreadsheet.CellValue;
namespace Comm
{
public class ExcelHelper
{
///
/// 将excel中的数据导入到DataTable中
///
/// excel工作薄sheet的名称
/// 第一行是否是DataTable的列名
/// 返回的DataTable
public DataTable ExcelToDataTable(string fileName, string sheetName, bool isFirstRowColumn)
{
DataTable data = new DataTable();
int startRow = 0;
try
{
IWorkbook workbook = null;
// FileStream fs = null;
//bool disposed;
ISheet sheet = null;
using (FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read))
{
if (fileName.IndexOf(".xlsx") > 0) // 2007版本
workbook = new XSSFWorkbook(fs);
else if (fileName.IndexOf(".xls") > 0) // 2003版本
workbook = new HSSFWorkbook(fs);
if (sheetName != null)
{
sheet = workbook.GetSheet(sheetName);
if (sheet == null) //如果没有找到指定的sheetName对应的sheet，则尝试获取第一个sheet
{
sheet = workbook.GetSheetAt(0);
}
}
else
{
sheet = workbook.GetSheetAt(0);
}
if (sheet != null)
{
data.TableName = sheetName;
IRow firstRow = sheet.GetRow(0);
int cellCount = firstRow.LastCellNum; //一行最后一个cell的编号 即总的列数
if (isFirstRowColumn)
{
for (int i = firstRow.FirstCellNum; i < cellCount; ++i)
{
ICell cell = firstRow.GetCell(i);
if (cell != null)
{
string cellValue = cell.StringCellValue;
if (cellValue != null)
{
DataColumn column = new DataColumn(cellValue);
data.Columns.Add(column);
}
}
}
startRow = sheet.FirstRowNum + 1;
}
else
{
startRow = sheet.FirstRowNum;
}
//最后一列的标号
int rowCount = sheet.LastRowNum;
for (int i = startRow; i <= rowCount; ++i)
{
IRow row = sheet.GetRow(i);
if (row == null) continue; //没有数据的行默认是null
DataRow dataRow = data.NewRow();
for (int j = row.FirstCellNum; j < cellCount; ++j)
{
if (row.GetCell(j) != null) //同理，没有数据的单元格都默认是null
dataRow[j] = row.GetCell(j).ToString();
}
data.Rows.Add(dataRow);
}
}
return data;
}
}
catch (Exception ex)
{
// Console.WriteLine("Exception: " + ex.Message);
return null;
}
}
///
/// 将excel中的数据导入到DataTable中
///
/// 第一行是否是DataTable的列名
/// 返回的DataTable
public DataSet ExcelToDataSet(string fileName, bool isFirstRowColumn)
{
DataSet ds = new DataSet();
int startRow = 0;
try
{
//var workbook = null;
// FileStream fs = null;
//bool disposed;
//ISheet sheet = null;
using (FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read))
{
//if (fileName.IndexOf(".xlsx") > 0) // 2007版本
// workbook = new XSSFWorkbook(fs);
//else if (fileName.IndexOf(".xls") > 0) // 2003版本
HSSFWorkbook workbook = new HSSFWorkbook(fs);
//if (sheetName != null)
//{
// sheet = workbook.GetSheet(sheetName);
// if (sheet == null) //如果没有找到指定的sheetName对应的sheet，则尝试获取第一个sheet
// {
// sheet = workbook.GetSheetAt(0);
// }
//}
//else
//{
// sheet = workbook.GetSheetAt(0);
//}
//InputStream input = new FileInputStream("文件路径");
for (int t = 0; t < workbook.NumberOfSheets; t++)
{
ISheet sheet = workbook.GetSheetAt(t);
DataTable data = new DataTable();
if (sheet != null)
{
data.TableName = sheet.SheetName;
IRow firstRow = sheet.GetRow(1);
int cellCount = 5; //一行最后一个cell的编号 即总的列数
if (isFirstRowColumn)
{
for (int i = firstRow.FirstCellNum + 1; i < cellCount; ++i)
{
ICell cell = firstRow.GetCell(i);
if (cell != null)
{
string cellValue = cell.StringCellValue;
if (cellValue != null)
{
DataColumn column = new DataColumn(cellValue);
data.Columns.Add(column);
}
}
}
startRow = sheet.FirstRowNum + 2;
}
else
{
startRow = sheet.FirstRowNum;
}
//最后一列的标号
int rowCount = sheet.LastRowNum;
for (int i = startRow; i <= rowCount; ++i)
{
IRow row = sheet.GetRow(i);
if (row == null) continue; //没有数据的行默认是null
DataRow dataRow = data.NewRow();
for (int j = 1; j < cellCount; ++j)
{
if (row.GetCell(j) != null) //同理，没有数据的单元格都默认是null
dataRow[j - 1] = row.GetCell(j).ToString();
}
data.Rows.Add(dataRow);
}
ds.Tables.Add(data);
}
}
return ds;
}
}
catch (Exception ex)
{
// Console.WriteLine("Exception: " + ex.Message);
return null;
}
}
///
/// 获取DataTable
///
///
/// 通过.xlsx;.xls确认excel
///
///
///
public DataTable ExcelToDataTable(Stream fs, string typestring, int sheetindex, int firstRowColumn)
{
DataTable data = new DataTable();
int startRow = 0;
try
{
IWorkbook workbook = null;
// FileStream fs = null;
//bool disposed;
ISheet sheet = null;
if (typestring.IndexOf(".xlsx") > 0) // 2007版本
workbook = new XSSFWorkbook(fs);
else if (typestring.IndexOf(".xls") > 0) // 2003版本
workbook = new HSSFWorkbook(fs);
sheet = workbook.GetSheetAt(0);
if (sheet != null)
{
IRow firstRow = sheet.GetRow(firstRowColumn);
int cellCount = firstRow.LastCellNum; //一行最后一个cell的编号 即总的列数
//if (isFirstRowColumn)
//{
for (int i = firstRow.FirstCellNum; i < cellCount; ++i)
{
ICell cell = firstRow.GetCell(i);
if (cell != null)
{
string cellValue = cell.StringCellValue;
if (cellValue != null)
{
if (!data.Columns.Contains(cellValue))
{
DataColumn column = new DataColumn(cellValue);
data.Columns.Add(column);
}
else
{
DataColumn column = new DataColumn(cellValue + i.ToString());
data.Columns.Add(column);
}
}
}
}
startRow = sheet.FirstRowNum + 1 + firstRowColumn;
//}
//else
//{
// startRow = sheet.FirstRowNum;
//}
//最后一列的标号
int rowCount = sheet.LastRowNum;
for (int i = startRow; i <= rowCount; ++i)
{
IRow row = sheet.GetRow(i);
if (row == null) continue; //没有数据的行默认是null
DataRow dataRow = data.NewRow();
for (int j = row.FirstCellNum; j < cellCount; ++j)
{//同理，没有数据的单元格都默认是null
if (row.GetCell(j) != null)
{
row.GetCell(j).SetCellType(CellType.String);
dataRow[j] = row.GetCell(j).StringCellValue;
}
}
data.Rows.Add(dataRow);
}
}
fs.Dispose();
return data;
}
catch (Exception ex)
{
fs.Dispose();
// Console.WriteLine("Exception: " + ex.Message);
return null;
}
}
///
/// DataTable转换成Excel文档流(导出数据量超出65535条,分sheet)
///
///
///
public Stream RenderDataTableToExcel(DataTable sourceTable)
{
HSSFWorkbook workbook = new HSSFWorkbook();
MemoryStream ms = new MemoryStream();
int dtRowsCount = sourceTable.Rows.Count;
int SheetCount = Convert.ToInt32(Math.Ceiling(Convert.ToDouble(dtRowsCount) / 65536));
int SheetNum = 1;
int rowIndex = 1;
int tempIndex = 1; //标示
ISheet sheet = workbook.CreateSheet("sheet1" + SheetNum);
for (int i = 0; i < dtRowsCount; i++)
{
if (i == 0 || tempIndex == 1)
{
IRow headerRow = sheet.CreateRow(0);
foreach (DataColumn column in sourceTable.Columns)
headerRow.CreateCell(column.Ordinal).SetCellValue(column.ColumnName);
}
HSSFRow dataRow = (HSSFRow)sheet.CreateRow(tempIndex);
foreach (DataColumn column in sourceTable.Columns)
{
dataRow.CreateCell(column.Ordinal).SetCellValue(sourceTable.Rows[i][column].ToString());
}
if (tempIndex == 65535)
{
SheetNum++;
sheet = workbook.CreateSheet("sheet" + SheetNum);//
tempIndex = 0;
}
rowIndex++;
tempIndex++;
//AutoSizeColumns(sheet);
}
workbook.Write(ms);
ms.Flush();
ms.Position = 0;
sheet = null;
// headerRow = null;
workbook = null;
return ms;
}
public Stream RenderDataTableToXlsxExcel(DataTable sourceTable, int sheetsSize = 65536)
{
MemoryStream ms = new MemoryStream();
using (var workbook = SpreadsheetDocument.Create(ms, DocumentFormat.OpenXml.SpreadsheetDocumentType.Workbook))
{
var workbookPart = workbook.AddWorkbookPart();
var sheets = new Sheets();
workbookPart.Workbook = new Workbook(sheets);
int total = sourceTable.Rows.Count;
int SheetCount = Convert.ToInt32(Math.Ceiling(Convert.ToDouble(total) / sheetsSize));
for (var i = 1u; i <= SheetCount; i++)
{
var worksheetPart = workbookPart.AddNewPart();
var sheetData = new SheetData();
worksheetPart.Worksheet = new Worksheet(sheetData);
var sheet = new Sheet
{
Id = workbookPart.GetIdOfPart(worksheetPart),
Name = $"sheet{i}",
SheetId = i
};
sheets.Append(sheet);
DocumentFormat.OpenXml.Spreadsheet.Row headerRow = new DocumentFormat.OpenXml.Spreadsheet.Row();
List columns = new List<string>();
foreach (DataColumn column in sourceTable.Columns)
{
columns.Add(column.ColumnName);
DocumentFormat.OpenXml.Spreadsheet.Cell cell = new DocumentFormat.OpenXml.Spreadsheet.Cell();
cell.DataType = DocumentFormat.OpenXml.Spreadsheet.CellValues.String;
cell.CellValue = new DocumentFormat.OpenXml.Spreadsheet.CellValue(column.ColumnName);
headerRow.AppendChild(cell);
}
sheetData.AppendChild(headerRow);
DataTable current = sourceTable.AsEnumerable().Skip((int)(i - 1) * sheetsSize)
.Take(sheetsSize).CopyToDataTable();
foreach (DataRow dsrow in current.Rows)
{
DocumentFormat.OpenXml.Spreadsheet.Row newRow = new DocumentFormat.OpenXml.Spreadsheet.Row();
foreach (String col in columns)
{
DocumentFormat.OpenXml.Spreadsheet.Cell cell = new DocumentFormat.OpenXml.Spreadsheet.Cell();
cell.DataType = DocumentFormat.OpenXml.Spreadsheet.CellValues.String;
cell.CellValue = new DocumentFormat.OpenXml.Spreadsheet.CellValue(dsrow[col].ToString()); //
newRow.AppendChild(cell);
}
sheetData.AppendChild(newRow);
}
}
workbook.Close();
}
ms.Position = 0;
return ms;
}
///
/// 能合并行的导出
///
///
/// 根据哪列判断合并 从0开始算
/// 是否隐藏合并列
/// 列宽度
/// 需要合并的列 从0开始算
///
///
public Stream NPOIDataTableToExcel(DataTable sourceTable, int mergeindex, bool hiddenmergeindex = true, int[] columnWidthArr = null, int[] mergeArr = null)
{
HSSFWorkbook workbook = new HSSFWorkbook();
MemoryStream ms = new MemoryStream();
int dtRowsCount = sourceTable.Rows.Count;
int SheetCount = Convert.ToInt32(Math.Ceiling(Convert.ToDouble(dtRowsCount) / 65536));
int SheetNum = 1;
int rowIndex = 1;
int tempIndex = 1; //标示
ISheet sheet = workbook.CreateSheet("sheet1" + SheetNum);
for (int i = 0; i < dtRowsCount; i++)
{
if (i == 0 || tempIndex == 1)
{
IRow headerRow = sheet.CreateRow(0);
foreach (DataColumn column in sourceTable.Columns)
headerRow.CreateCell(column.Ordinal).SetCellValue(column.ColumnName);
}
HSSFRow dataRow = (HSSFRow)sheet.CreateRow(tempIndex);
foreach (DataColumn column in sourceTable.Columns)
{
ICellStyle style = workbook.CreateCellStyle();//创建样式
style.VerticalAlignment = VerticalAlignment.Center;//垂直居中
ICell cell = dataRow.CreateCell(column.Ordinal);
cell.SetCellValue(sourceTable.Rows[i][column].ToString());
cell.CellStyle = style;
}
if (tempIndex == 65535)
{
SheetNum++;
sheet = workbook.CreateSheet("sheet" + SheetNum);//
tempIndex = 0;
}
rowIndex++;
tempIndex++;
//AutoSizeColumns(sheet);
}
/*设置列宽*/
if (columnWidthArr != null && columnWidthArr.Length > 0)
{
for (int c = 0; c < columnWidthArr.Length; c++)
{
sheet.SetColumnWidth(c, columnWidthArr[c] * 256);
}
}
/*合并单元格*/
if (mergeArr != null && mergeArr.Count() > 0)
{
for (int i = 0; i < dtRowsCount; i++)
{
if (i > 0 && sourceTable.Rows[i][mergeindex].ToString() == sourceTable.Rows[i - 1][mergeindex].ToString())
{
for (int j = 0; j < mergeArr.Count(); j++)
{
sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(i, i + 1, mergeArr[j], mergeArr[j]));
}
}
}
}
/*是否隐藏判断合并的列*/
if (mergeindex >= 0)
{
sheet.SetColumnHidden(mergeindex, hiddenmergeindex);
}
workbook.Write(ms);
ms.Flush();
ms.Position = 0;
sheet = null;
// headerRow = null;
workbook = null;
return ms;
}
///
/// NPOI导出EXCEL
///
/// 数据源
/// 导出文件的名称
/// 列宽数组 eventImages 扩展
public Stream NpoiExcel(DataTable dt, int[] array, bool isShowUrl = false)
{
NPOI.HSSF.UserModel.HSSFWorkbook book = new NPOI.HSSF.UserModel.HSSFWorkbook();
NPOI.SS.UserModel.ISheet sheet = book.CreateSheet("Sheet1");
NPOI.SS.UserModel.IRow headerrow = sheet.CreateRow(0);
headerrow.Height = 30 * 20;
ICellStyle style = book.CreateCellStyle();
style.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;
style.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
style.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
style.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
style.WrapText = true;
style.Alignment = HorizontalAlignment.Center;
style.VerticalAlignment = VerticalAlignment.Center;
/*标题*/
for (int i = 0; i < dt.Columns.Count; i++)
{
ICell cell = headerrow.CreateCell(i);
cell.CellStyle = style;
cell.SetCellValue(dt.Columns[i].ColumnName);
/*设置列宽*/
if (array.Length > 0)
{
for (int c = 0; c < array.Length; c++)
{
sheet.SetColumnWidth(c, array[c] * 256);
}
}
}
/*内容*/
for (int j = 1; j <= dt.Rows.Count; j++)
{
NPOI.SS.UserModel.IRow contentrow = sheet.CreateRow(j);
contentrow.Height = 100 * 15;
for (int k = 0; k < dt.Columns.Count; k++)
{
ICell cell = contentrow.CreateCell(k);
cell.CellStyle = style;
if (dt.Columns[k].ColumnName.Contains("图片"))
{
if (!isShowUrl)//图片下载
{
if (dt.Rows[j - 1][k] != null)
{
string[] pathlist = dt.Rows[j - 1][k].ToString().Split(',');
if (pathlist.Count() > 0)
{
int index = 0;
foreach (var picurl in pathlist)
{
AddCellPicture(sheet, book, picurl, j, k, index);
index++;
}
}
}
}
else//给图片链接
{
if (dt.Rows[j - 1][k] != null)
{
string[] pathlist = dt.Rows[j - 1][k].ToString().Split(',');
if (pathlist.Count() > 0)
{
int index = 0;
foreach (var picurl in pathlist)
{
if (index > 0)
{
cell = contentrow.CreateCell(k + index);
}
cell.CellStyle = style;
cell.SetCellValue(picurl);
index++;
}
}
}
}
}
else
{
cell.CellStyle = style;
cell.SetCellValue(dt.Rows[j - 1][k].ToString());
}
}
}
MemoryStream ms = new MemoryStream();
book.Write(ms);
return ms;
}
///
/// 向sheet插入图片
///
///
///
///
///
///
private void AddCellPicture(ISheet sheet, HSSFWorkbook workbook, string fileurl, int row, int col, int index)
{
try
{
if (File.Exists(fileurl) == true)
{
byte[] bytes = System.IO.File.ReadAllBytes(fileurl);
if (!string.IsNullOrEmpty(fileurl))
{
int pictureIdx = workbook.AddPicture(bytes, NPOI.SS.UserModel.PictureType.JPEG);
HSSFPatriarch patriarch = (HSSFPatriarch)sheet.CreateDrawingPatriarch();
HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0, 0, 0, col + index, row, col + 1 + index, row + 1);
HSSFPicture pict = (HSSFPicture)patriarch.CreatePicture(anchor, pictureIdx);
}
}
}
catch (Exception ex)
{
throw ex;
}
}
}
}