419 lines
16 KiB
C#
419 lines
16 KiB
C#
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.Web;
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using NPOI.HSSF.UserModel;
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using NPOI.SS.UserModel;
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using NPOI.XSSF.UserModel;
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using System.Web.UI.WebControls;
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using System.Text;
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namespace HZQR.Common
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{
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public class ExcelHelper
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{
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private string fileName = null; //文件名
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private IWorkbook workbook = null;
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private FileStream fs = null;
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private bool disposed;
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public int DataTableToExcel(string FileName, DataTable data, string sheetName, bool isColumnWritten)
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{
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int i = 0;
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int j = 0;
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int count = 0;
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ISheet sheet = null;
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if (fileName == null)
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{
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workbook = new NPOI.HSSF.UserModel.HSSFWorkbook();
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//NPOI.SS.UserModel.ISheet sheet = book.CreateSheet("Sheet1");
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}
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else
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{
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fs = new FileStream(fileName, FileMode.OpenOrCreate, FileAccess.ReadWrite);
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if (fileName.IndexOf(".xlsx") > 0) // 2007版本
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workbook = new XSSFWorkbook();
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else if (fileName.IndexOf(".xls") > 0) // 2003版本
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workbook = new HSSFWorkbook();
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}
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try
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{
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if (workbook != null)
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{
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sheet = workbook.CreateSheet(sheetName);
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}
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else
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{
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return -1;
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}
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if (isColumnWritten == true) //写入DataTable的列名
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{
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IRow row = sheet.CreateRow(0);
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for (j = 0; j < data.Columns.Count; ++j)
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{
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row.CreateCell(j).SetCellValue(data.Columns[j].ColumnName);
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}
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count = 1;
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}
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else
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{
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count = 0;
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}
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for (i = 0; i < data.Rows.Count; ++i)
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{
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IRow row = sheet.CreateRow(count);
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for (j = 0; j < data.Columns.Count; ++j)
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{
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row.CreateCell(j).SetCellValue(data.Rows[i][j].ToString());
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}
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++count;
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}
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//列宽自适应，只对英文和数字有效
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for (int c = 0; c <= data.Rows.Count;c++)
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{
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sheet.AutoSizeColumn(c);
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}
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#region 自动适应中文宽度
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//获取当前列的宽度，然后对比本列的长度，取最大值
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for (int columnNum = 0; columnNum <= data.Rows.Count; columnNum++)
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{
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int columnWidth = sheet.GetColumnWidth(columnNum) / 256;
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for (int rowNum = 1; rowNum <= sheet.LastRowNum; rowNum++)
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{
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IRow currentRow;
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//当前行未被使用过
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if (sheet.GetRow(rowNum) == null)
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{
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currentRow = sheet.CreateRow(rowNum);
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}
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else
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{
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currentRow = sheet.GetRow(rowNum);
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}
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if (currentRow.GetCell(columnNum) != null)
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{
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ICell currentCell = currentRow.GetCell(columnNum);
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int length = Encoding.Default.GetBytes(currentCell.ToString()).Length;
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if (columnWidth < length)
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{
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columnWidth = length;
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}
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}
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}
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//sheet.SetColumnWidth(columnNum, columnWidth * 256);
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//列宽ColumnWidth的限制255个字符,以一个字符的1/256的宽度作为一个单位。
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int colWidth = columnWidth * 256;
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if (colWidth < 255 * 256)
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{
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sheet.SetColumnWidth(columnNum, colWidth);
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}
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else
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{
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sheet.SetColumnWidth(columnNum, 6000);
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}
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}
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#endregion
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// 写入到客户端
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System.IO.MemoryStream ms = new System.IO.MemoryStream();
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workbook.Write(ms);
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//解决360浏览器导出Excel的文件名乱码
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FileName = System.Web.HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8);
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long fileSize = ms.Length;
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HttpContext.Current.Response.Clear();
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HttpContext.Current.Response.Buffer = true;
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HttpContext.Current.Response.Charset = "utf-8";
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HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");//设置输出流为简体中文
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HttpContext.Current.Response.AddHeader("Content-Length", fileSize.ToString()); //加上设置大小下载下来的.xls文件打开时才没有错误
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HttpContext.Current.Response.AddHeader("Content-Disposition", string.Format("attachment; filename=" + FileName + "_{0}.xls", DateTime.Now.ToString("yyyyMMddHHmmssfff")));
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HttpContext.Current.Response.BinaryWrite(ms.ToArray());
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HttpContext.Current.Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。
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HttpContext.Current.Response.End();
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workbook = null;
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ms.Close();
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ms.Dispose();
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return count;
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}
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catch (Exception ex)
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{
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Console.WriteLine("Exception: " + ex.Message);
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return -1;
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}
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}
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public int DataTableToExcelForEhange(string FileName, DataTable data, string sheetName, bool isColumnWritten)
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{
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int i = 0;
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int j = 0;
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int count = 0;
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ISheet sheet = null;
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if (fileName == null)
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{
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workbook = new NPOI.HSSF.UserModel.HSSFWorkbook();
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}
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else
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{
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fs = new FileStream(fileName, FileMode.OpenOrCreate, FileAccess.ReadWrite);
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if (fileName.IndexOf(".xlsx") > 0) // 2007版本
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workbook = new XSSFWorkbook();
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else if (fileName.IndexOf(".xls") > 0) // 2003版本
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workbook = new HSSFWorkbook();
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}
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try
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{
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if (workbook != null)
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{
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sheet = workbook.CreateSheet(sheetName);
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}
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else
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{
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return -1;
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}
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if (isColumnWritten == true) //写入DataTable的列名
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{
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IRow row = sheet.CreateRow(0);
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for (j = 0; j < data.Columns.Count; ++j)
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{
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row.CreateCell(j).SetCellValue(data.Columns[j].ColumnName);
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}
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count = 1;
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}
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else
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{
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count = 0;
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}
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for (i = 0; i < data.Rows.Count; ++i)
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{
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IRow row = sheet.CreateRow(count);
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for (j = 0; j < data.Columns.Count; ++j)
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{
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row.CreateCell(j).SetCellValue(data.Rows[i][j].ToString());
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}
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++count;
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}
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// 写入到客户端
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System.IO.MemoryStream ms = new System.IO.MemoryStream();
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workbook.Write(ms);
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HttpContext.Current.Response.Clear();
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HttpContext.Current.Response.Buffer = true;
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HttpContext.Current.Response.Charset = "utf-8";
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HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");//设置输出流为简体中文
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HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment; filename=" + FileName);
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HttpContext.Current.Response.BinaryWrite(ms.ToArray());
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HttpContext.Current.Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。
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HttpContext.Current.Response.End();
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workbook = null;
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ms.Close();
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ms.Dispose();
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return count;
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}
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catch (Exception ex)
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{
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Console.WriteLine("Exception: " + ex.Message);
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return -1;
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}
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}
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public static DataTable ExcelImport(string filePath)
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{
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NPOI.SS.UserModel.IWorkbook book = null;
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HSSFWorkbook hssfworkbook;
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#region //初始化信息
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try
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{
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using (FileStream file = new FileStream(filePath, FileMode.Open, FileAccess.Read))
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{
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try
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{
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book = new NPOI.XSSF.UserModel.XSSFWorkbook(file);
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}
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catch (Exception ex)
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{
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book = new HSSFWorkbook(file);
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}
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}
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}
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catch (Exception e)
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{
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throw e;
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}
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#endregion
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NPOI.SS.UserModel.ISheet sheet = book.GetSheetAt(0);
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System.Collections.IEnumerator rows = sheet.GetRowEnumerator();
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DataTable dt = new DataTable();
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for (int j = 0; j < (sheet.GetRow(0).LastCellNum); j++)
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{
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dt.Columns.Add(Convert.ToChar(((int)'A') + j).ToString());
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}
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while (rows.MoveNext())
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{
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Type _Type = rows.Current.GetType();
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IRow row = (IRow)rows.Current;
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//HSSFRow row = (HSSFRow)
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DataRow dr = dt.NewRow();
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for (int i = 0; i < row.LastCellNum; i++)
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{
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NPOI.SS.UserModel.ICell cell = row.GetCell(i);
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if (cell == null)
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{
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dr[i] = null;
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}
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else
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{
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dr[i] = cell.ToString();
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}
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}
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dt.Rows.Add(dr);
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}
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return dt;
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}
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public int DataTableToExcels(string FileName, DataTable data, string sheetName, bool isColumnWritten, bool isDetail)
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{
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int i = 0;
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int j = 0;
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int count = 0;
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ISheet sheet = null;
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if (fileName == null)
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{
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workbook = new NPOI.HSSF.UserModel.HSSFWorkbook();
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//NPOI.SS.UserModel.ISheet sheet = book.CreateSheet("Sheet1");
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}
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else
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{
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fs = new FileStream(fileName, FileMode.OpenOrCreate, FileAccess.ReadWrite);
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if (fileName.IndexOf(".xlsx") > 0) // 2007版本
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workbook = new XSSFWorkbook();
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else if (fileName.IndexOf(".xls") > 0) // 2003版本
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workbook = new HSSFWorkbook();
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}
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try
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{
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if (workbook != null)
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{
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sheet = workbook.CreateSheet(sheetName);
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}
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else
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{
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return -1;
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}
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if (isColumnWritten == true) //写入DataTable的列名
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{
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IRow row = sheet.CreateRow(0);
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if (!isDetail)
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{
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row.CreateCell(0).SetCellValue("服务区");
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row.CreateCell(1).SetCellValue("所属区域");
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row.CreateCell(2).SetCellValue("项目名称");
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row.CreateCell(3).SetCellValue("经营商户");
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row.CreateCell(4).SetCellValue("应收账款余额");
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row.CreateCell(5).SetCellValue("账期<一个月");
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row.CreateCell(6).SetCellValue("一个月<账期<三个月");
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row.CreateCell(7).SetCellValue("三个月<账期");
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row.CreateCell(8).SetCellValue("其他应收款余额");
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row.CreateCell(9).SetCellValue("账期<一个月");
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row.CreateCell(10).SetCellValue("一个月<账期<三个月");
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row.CreateCell(11).SetCellValue("三个月<账期");
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row.CreateCell(12).SetCellValue("逾期金额合计");
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row.CreateCell(13).SetCellValue("逾期原因分析");
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row.CreateCell(14).SetCellValue("备注");
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}
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else
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{
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row.CreateCell(0).SetCellValue("所属区域");
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row.CreateCell(1).SetCellValue("服务区");
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row.CreateCell(2).SetCellValue("应收账款合计");
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row.CreateCell(3).SetCellValue("正常(账期<1个月)");
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row.CreateCell(4).SetCellValue("异常(1个月<账期<3个月)");
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row.CreateCell(5).SetCellValue("严重逾期(3个月<账期)");
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row.CreateCell(6).SetCellValue("其他应收款余额");
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row.CreateCell(7).SetCellValue("正常(账期<1个月)");
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row.CreateCell(8).SetCellValue("异常(1个月<账期<3个月)");
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row.CreateCell(9).SetCellValue("严重逾期(3个月<账期)");
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}
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count = 1;
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}
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else
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{
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count = 0;
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}
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for (i = 0; i < data.Rows.Count; ++i)
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{
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IRow row = sheet.CreateRow(count);
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for (j = 0; j < data.Columns.Count; ++j)
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{
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row.CreateCell(j).SetCellValue(data.Rows[i][j].ToString());
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}
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++count;
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}
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// 写入到客户端
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System.IO.MemoryStream ms = new System.IO.MemoryStream();
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workbook.Write(ms);
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HttpContext.Current.Response.Clear();
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HttpContext.Current.Response.Buffer = true;
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HttpContext.Current.Response.Charset = "utf-8";
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HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");//设置输出流为简体中文
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HttpContext.Current.Response.AddHeader("Content-Disposition", string.Format("attachment; filename=" + FileName +
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"_{0}.xls", DateTime.Now.ToString("yyyyMMddHHmmssfff")));
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HttpContext.Current.Response.BinaryWrite(ms.ToArray());
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HttpContext.Current.Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。
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HttpContext.Current.Response.End();
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workbook = null;
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ms.Close();
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ms.Dispose();
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return count;
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}
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catch (Exception ex)
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{
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Console.WriteLine("Exception: " + ex.Message);
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return -1;
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}
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}
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public void setCellStyleAlignmentCenter(HSSFCellStyle style)
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{
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style.VerticalAlignment = NPOI.SS.UserModel.VerticalAlignment.Center;
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style.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Center;
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}
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public HSSFFont createFont(HSSFWorkbook hssfworkbook)
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{
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return (HSSFFont)hssfworkbook.CreateFont();
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}
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public void setCellStyleBord(HSSFCellStyle style)
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{
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style.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
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style.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
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style.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
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style.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;
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}
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}
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} |