385 lines
14 KiB
C#
385 lines
14 KiB
C#
using NPOI.XSSF.UserModel;
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using NPOI.HSSF.UserModel;
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using NPOI.HPSF;
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using NPOI.POIFS.FileSystem;
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using NPOI.SS.UserModel;
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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.Web;
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using System.Runtime.InteropServices;
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using Microsoft.Win32;
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using System.Windows;
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using System.Data.OleDb;
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namespace HiiShe.Manager
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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 ExcelHelper(string fileName)
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{
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this.fileName = fileName;
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disposed = false;
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}
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public ExcelHelper()
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{ }
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#region NPOI DataGridView 导出 EXCEL
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/// <summary>
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/// NPOI DataGridView 导出 EXCEL
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/// </summary>
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/// <param name="fileName"> 默认保存文件名</param>
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/// <param name="dgv">DataGridView</param>
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/// <param name="fontname">字体名称</param>
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/// <param name="fontsize">字体大小</param>
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public static void ExportExcel(string fileName, string fontname = "宋体", short fontsize = 10,params DataTable[] arraydgv)
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{
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int g = 0;
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HSSFWorkbook workbook = new HSSFWorkbook();
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foreach (DataTable dgv in arraydgv)
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{
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g++;
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//检测是否有数据
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//if (dgv.Rows.Count == 0)
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// continue ;
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//创建主要对象
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HSSFSheet sheet = (HSSFSheet)workbook.CreateSheet("Sheet"+g.ToString());
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//设置字体，大小，对齐方式
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HSSFCellStyle style = (HSSFCellStyle)workbook.CreateCellStyle();
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HSSFFont font = (HSSFFont)workbook.CreateFont();
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font.FontName = fontname;
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font.FontHeightInPoints = fontsize;
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style.SetFont(font);
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style.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Center; //居中对齐
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//添加表头
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HSSFRow dataRow = (HSSFRow)sheet.CreateRow(0);
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for (int i = 0; i < dgv.Columns.Count; i++)
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{
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dataRow.CreateCell(i).SetCellValue(dgv.Columns[i].ColumnName);
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dataRow.GetCell(i).CellStyle = style;
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}
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//注释的这行是设置筛选的
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//sheet.SetAutoFilter(new CellRangeAddress(0, dgv.Columns.Count, 0, dgv.Columns.Count));
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//添加列及内容
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for (int i = 0; i < dgv.Rows.Count; i++)
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{
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dataRow = (HSSFRow)sheet.CreateRow(i + 1);
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for (int j = 0; j < dgv.Columns.Count; j++)
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{
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string ValueType = dgv.Rows[i][j].GetType().ToString();
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string Value = dgv.Rows[i][j].ToString();
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switch (ValueType)
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{
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case "System.DateTime"://日期类型
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//System.DateTime dateV;
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//System.DateTime.TryParse(Value, out dateV);
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//dataRow.CreateCell(j).SetCellValue(dateV);
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////break;
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case "System.String"://字符串类型
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dataRow.CreateCell(j).SetCellValue(Value);
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break;
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case "System.Boolean"://布尔型
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bool boolV = false;
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bool.TryParse(Value, out boolV);
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dataRow.CreateCell(j).SetCellValue(boolV);
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break;
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case "System.Int16"://整型
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case "System.Int32":
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case "System.Int64":
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case "System.Byte":
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int intV = 0;
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int.TryParse(Value, out intV);
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dataRow.CreateCell(j).SetCellValue(intV);
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break;
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case "System.Decimal"://浮点型
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case "System.Double":
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double doubV = 0;
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double.TryParse(Value, out doubV);
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dataRow.CreateCell(j).SetCellValue(doubV);
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break;
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case "System.DBNull"://空值处理
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dataRow.CreateCell(j).SetCellValue("");
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break;
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default:
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dataRow.CreateCell(j).SetCellValue("");
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break;
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}
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dataRow.GetCell(j).CellStyle = style;
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//设置宽度
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sheet.SetColumnWidth(j, (Value.Length + 10) * 256);
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}
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}
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}
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//保存文件
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string saveFileName = "";
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SaveFileDialog saveDialog = new SaveFileDialog();
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saveDialog.DefaultExt = "qrdata";
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saveDialog.Filter = "牵软网络交互文件|*.qrdata";
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saveDialog.FileName = fileName;
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MemoryStream ms = new MemoryStream();
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if (saveDialog.ShowDialog() ==true)
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{
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saveFileName = saveDialog.FileName;
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if (!CheckFiles(saveFileName))
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{
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MessageBox.Show("文件被占用，请关闭文件 " + saveFileName);
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workbook = null;
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ms.Close();
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ms.Dispose();
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return;
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}
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workbook.Write(ms);
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FileStream file = new FileStream(saveFileName.Replace(".xls",".qrdata"), FileMode.Create);
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workbook.Write(file);
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file.Close();
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workbook = null;
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ms.Close();
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ms.Dispose();
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MessageBox.Show(fileName + " 保存成功", "提示");
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}
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else
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{
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workbook = null;
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ms.Close();
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ms.Dispose();
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}
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}
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#endregion
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#region 检测文件被占用
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[DllImport("kernel32.dll")]
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public static extern IntPtr _lopen(string lpPathName, int iReadWrite);
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[DllImport("kernel32.dll")]
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public static extern bool CloseHandle(IntPtr hObject);
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public const int OF_READWRITE = 2;
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public const int OF_SHARE_DENY_NONE = 0x40;
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public readonly IntPtr HFILE_ERROR = new IntPtr(-1);
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/// <summary>
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/// 检测文件被占用
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/// </summary>
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/// <param name="FileNames">要检测的文件路径</param>
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/// <returns></returns>
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public static bool CheckFiles(string FileNames)
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{
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if (!File.Exists(FileNames))
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{
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//文件不存在
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return true;
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}
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IntPtr vHandle = _lopen(FileNames, OF_READWRITE | OF_SHARE_DENY_NONE);
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//if (vHandle == HFILE_ERROR)
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//{
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// //文件被占用
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// return false;
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//}
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//文件没被占用
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CloseHandle(vHandle);
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return true;
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}
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#endregion
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public static void ToExcel(MemoryStream ms, string strFileName)
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{
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}
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public static void RenderToExcel(string strFileName, DataTable table)
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{
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MemoryStream ms = new MemoryStream();
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using (table)
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{
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IWorkbook workbook = new HSSFWorkbook();
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ISheet sheet = workbook.CreateSheet();
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IRow headerRow = sheet.CreateRow(0);
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// handling header.
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foreach (DataColumn column in table.Columns)
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headerRow.CreateCell(column.Ordinal).SetCellValue(column.Caption);//If Caption not set, returns the ColumnName value
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// handling value.
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int rowIndex = 1;
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foreach (DataRow row in table.Rows)
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{
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IRow dataRow = sheet.CreateRow(rowIndex);
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foreach (DataColumn column in table.Columns)
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{
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dataRow.CreateCell(column.Ordinal).SetCellValue(row[column].ToString());
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}
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rowIndex++;
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}
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workbook.Write(ms);
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ms.Flush();
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ms.Position = 0;
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}
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}
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public DataTable ExcelToDataTable(string sheetName, bool isFirstRowColumn)
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{
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ISheet sheet = null;
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DataTable data = new DataTable();
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int startRow = 0;
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try
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{
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fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
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//if (fileName.IndexOf(".xlsx") > 0) // 2007版本
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// workbook = new XSSFWorkbook(fs);
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//else if (fileName.IndexOf(".xls") > 0) // 2003版本
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// workbook = new HSSFWorkbook(fs);
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try
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{
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workbook = new XSSFWorkbook(fs);
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}
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catch
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{
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workbook = new HSSFWorkbook(fs);
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}
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if (sheetName != null)
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{
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sheet = workbook.GetSheet(sheetName);
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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
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{
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sheet = workbook.GetSheetAt(0);
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}
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}
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else
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{
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sheet = workbook.GetSheetAt(0);
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}
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if (sheet != null)
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{
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IRow firstRow = sheet.GetRow(0);
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int cellCount = firstRow.LastCellNum; //一行最后一个cell的编号 即总的列数
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if (isFirstRowColumn)
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{
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for (int i = firstRow.FirstCellNum; i < cellCount; ++i)
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{
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ICell cell = firstRow.GetCell(i);
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if (cell != null)
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{
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string cellValue = cell.StringCellValue;
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if (cellValue != null)
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{
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DataColumn column = new DataColumn(cellValue);
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data.Columns.Add(column);
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}
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}
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}
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startRow = sheet.FirstRowNum + 1;
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}
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else
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{
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startRow = sheet.FirstRowNum;
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}
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//最后一列的标号
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int rowCount = sheet.LastRowNum;
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for (int i = startRow; i <= rowCount; ++i)
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{
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IRow row = sheet.GetRow(i);
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if (row == null) continue; //没有数据的行默认是null
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DataRow dataRow = data.NewRow();
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for (int j = row.FirstCellNum; j < cellCount; ++j)
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{
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if (row.GetCell(j) != null) //同理，没有数据的单元格都默认是null
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dataRow[j] = row.GetCell(j).ToString();
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}
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data.Rows.Add(dataRow);
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}
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}
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return data;
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}
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catch (Exception ex)
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{
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throw ex;
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}
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}
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public static DataTable DataEncryption(DataTable arrayData)
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{
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DataTable CloneData = new DataTable();
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foreach (DataColumn dc in arrayData.Columns)
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{
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CloneData.Columns.Add(dc.ColumnName.ToDecrypt(), typeof(string));
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}
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for (int i = 0; i < arrayData.Rows.Count; i++)
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{
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CloneData.Rows.Add();
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for (int j = 0; j < arrayData.Columns.Count; j++)
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{
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if (CloneData.Columns[j].ColumnName != "PROWERRIGHT")
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{
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CloneData.Rows[i][j] = arrayData.Rows[i][j].ToString().ToDecrypt();
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}
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}
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}
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return CloneData;
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}
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public String[] GetExcelSheetNames(string excelFile)
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{
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OleDbConnection objConn = null;
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System.Data.DataTable dt = null;
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try
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{
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String connString = "Provider=Microsoft.Jet.OLEDB.4.0;" +
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"Data Source=" + excelFile + ";Extended Properties=Excel 8.0;";
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objConn = new OleDbConnection(connString);
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objConn.Open();
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dt = objConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new Object[] { null, null, null, "TABLE" });
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if (dt == null)
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{
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return null;
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}
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String[] excelSheets = new String[dt.Rows.Count];
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for (int i = 0; i < dt.Rows.Count; i++)
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{
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excelSheets[i] = dt.Rows[i][2].ToString().Replace("$", "");
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}
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//int sheetsCounter = dt.Rows.Count;
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return excelSheets;
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}
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catch (Exception ex)
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{
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Console.WriteLine(ex.Message);
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return null;
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}
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finally
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{
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if (objConn != null)
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{
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objConn.Close();
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objConn.Dispose();
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}
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if (dt != null)
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{
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dt.Dispose();
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}
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}
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}
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}
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} |