C# NOPI实现导出 类
using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Web;
using NPOI.HPSF;
using NPOI.HSSF.UserModel;
using NPOI.HSSF.Util;
using NPOI.SS.UserModel;
using NPOI.SS.Util;
namespace WebApplicationNopi
{
public class ExcelHelper
{
private static MemoryStream WriteToStream(HSSFWorkbook hssfworkbook)
{
//Write the stream data of workbook to the root directory
MemoryStream file = new MemoryStream();
hssfworkbook.Write(file);
return file;
}
//Export(DataTable table, string headerText, string sheetName, string[] columnName, string[] columnTitle)
///
/// 向客户端输出文件。
///
/// 数据表。
/// 头部文本。
///
/// 数据列名称。
/// 表标题。
/// 文件名称。
public static void Write(HttpContext context, DataTable table, string headerText, string sheetName, string[] columnName, string[] columnTitle, string fileName)
{
context.Response.Clear();
context.Response.AddHeader("Content-Disposition",
"attachment; filename=" + fileName); //HttpUtility.UrlEncode(fileName));
context.Response.ContentType = "application/vnd.ms-excel";
HSSFWorkbook hssfworkbook = new HSSFWorkbook();
GenerateData(hssfworkbook, table, headerText, sheetName, columnName, columnTitle);
context.Response.BinaryWrite(WriteToStream(hssfworkbook).GetBuffer());
context.Response.End();
}
///
/// 向客户端输出文件
///
///
/// 数据表列表
/// 头部文本
/// 数据列名称集合
/// 表标题集合
/// 表标题集合
/// 文件名称
public static void Write(HttpContext context, List list, string headerText, string[] sheetNameList, List columnName, List columnTitle, string fileName)
{
context.Response.Clear();
context.Response.AddHeader("Content-Disposition",
"attachment; filename=" + fileName); //HttpUtility.UrlEncode(fileName));
context.Response.ContentType = "application/vnd.ms-excel";
HSSFWorkbook hssfworkbook = new HSSFWorkbook();
for (int i = 0; i < sheetNameList.Length; i++)
{
GenerateData(hssfworkbook, list[i], headerText, sheetNameList[i], columnName[i], columnTitle[i]);
}
context.Response.BinaryWrite(WriteToStream(hssfworkbook).GetBuffer());
context.Response.End();
}
///
///
///
///
///
///
///
///
///
/// 导入Excel
///
///
public static DataTable Import(string filePath)
{
HSSFWorkbook workbook = OpenWorkbook(filePath);
HSSFSheet sheet = (HSSFSheet)workbook.GetSheetAt(0);
System.Collections.IEnumerator rows = sheet.GetRowEnumerator();
DataTable dt = new DataTable();
if (sheet.LastRowNum <= 0)
{
return dt;
}
int lastCellNum = sheet.GetRow(0).LastCellNum;
//添加列
if (rows.MoveNext())
{
HSSFRow row = (HSSFRow)rows.Current;
for (int j = 0; j < lastCellNum; j++)
{
HSSFCell cell = (HSSFCell)row.GetCell(j);
if (cell == null)
{
continue;
}
dt.Columns.Add(cell.ToString());
}
}
//添加行
while (rows.MoveNext())
{
HSSFRow row = (HSSFRow)rows.Current;
DataRow dr = dt.NewRow();
bool isChecked = false;
for (int i = 0; i < row.LastCellNum; i++)
{
if (i >= dt.Columns.Count)
{
break;
}
HSSFCell cell = (HSSFCell)row.GetCell(i);
if (cell == null || string.IsNullOrEmpty(cell.ToString()))
{
dr[i] = null;
}
else
{
isChecked = true;
//数字型
if (cell.CellType == CellType.Numeric)
{
dr[i] = cell.NumericCellValue;
}
//字符串型
else
{
dr[i] = cell.ToString();
}
}
}
if (isChecked)
{
dt.Rows.Add(dr);
}
else
{
dr = null;
}
}
return dt;
}
public static HSSFWorkbook OpenWorkbook(String fileName)
{
try
{
return new HSSFWorkbook(new FileStream(fileName, FileMode.Open));
}
catch (IOException)
{
throw;
}
}
public static HSSFWorkbook ExportDT(DataTable dtSource, string strHeaderText)
{
HSSFWorkbook workbook = new HSSFWorkbook();
HSSFSheet sheet = workbook.CreateSheet() as HSSFSheet;
sheet.DefaultColumnWidth = 2;
sheet.DefaultRowHeight = 15 * 20;
#region 右击文件 属性信息
{
DocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation();
dsi.Company = "aaa";
workbook.DocumentSummaryInformation = dsi;
SummaryInformation si = PropertySetFactory.CreateSummaryInformation();
si.Author = "licao"; //填加xls文件作者信息
si.ApplicationName = "网银"; //填加xls文件创建程序信息
si.LastAuthor = "licao"; //填加xls文件最后保存者信息
si.Subject = "本文档由 JINS OA 系统生成"; //填加文件主题信息
si.CreateDateTime = DateTime.Now;
workbook.SummaryInformation = si;
}
#endregion 右击文件 属性信息
HSSFCellStyle dateStyle = workbook.CreateCellStyle() as HSSFCellStyle;
HSSFDataFormat format = workbook.CreateDataFormat() as HSSFDataFormat;
dateStyle.DataFormat = format.GetFormat("yyyy-mm-dd HH:mm:ss");
//取得列宽
int[] arrColWidth = new int[dtSource.Columns.Count];
foreach (DataColumn item in dtSource.Columns)
{
arrColWidth[item.Ordinal] = Encoding.GetEncoding(936).GetBytes(item.ColumnName.ToString()).Length;
}
for (int i = 0; i < dtSource.Rows.Count; i++)
{
for (int j = 0; j < dtSource.Columns.Count; j++)
{
int intTemp = Encoding.GetEncoding(936).GetBytes(dtSource.Rows[i][j].ToString()).Length;
if (intTemp > arrColWidth[j])
{
arrColWidth[j] = intTemp;
}
}
}
int rowIndex = 0;
foreach (DataRow row in dtSource.Rows)
{
#region 新建表，填充表头，填充列头，样式
if (rowIndex == 65535 || rowIndex == 0)
{
if (rowIndex != 0)
{
sheet = workbook.CreateSheet() as HSSFSheet;
}
#region 表头及样式
{
HSSFRow headerRow = sheet.CreateRow(0) as HSSFRow;
headerRow.HeightInPoints = 25;
headerRow.CreateCell(0).SetCellValue(strHeaderText);
HSSFCellStyle headStyle = workbook.CreateCellStyle() as HSSFCellStyle;
headStyle.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Center;
HSSFFont font = workbook.CreateFont() as HSSFFont;
font.FontHeightInPoints = 20;
font.FontName = "宋体";
font.Boldweight = 700;
headStyle.SetFont(font);
headerRow.GetCell(0).CellStyle = headStyle;
sheet.AddMergedRegion(new Region(0, 0, 0, dtSource.Columns.Count - 1));
//headerRow.Dispose();
}
#endregion 表头及样式
#region 列头及样式
{
HSSFRow headerRow = sheet.CreateRow(1) as HSSFRow;
headerRow.Height = 15 * 20;
HSSFCellStyle cellStyle = workbook.CreateCellStyle() as HSSFCellStyle;
cellStyle.Alignment = NPOI.SS.UserModel.HorizontalAlignment.Center;
cellStyle.VerticalAlignment = VerticalAlignment.Center;
HSSFFont font = workbook.CreateFont() as HSSFFont;
font.FontHeightInPoints = 9;
font.FontName = "宋体";
cellStyle.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
cellStyle.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
cellStyle.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
cellStyle.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;
cellStyle.FillBackgroundColor = HSSFColor.Blue.Index2;
font.Boldweight = 700;
cellStyle.SetFont(font);
foreach (DataColumn column in dtSource.Columns)
{
headerRow.CreateCell(column.Ordinal).SetCellValue(column.ColumnName);
headerRow.GetCell(column.Ordinal).CellStyle = cellStyle;
if ((arrColWidth[column.Ordinal] + 1) * 256 > 30000)
{
sheet.SetColumnWidth(column.Ordinal, 10000);
}
else
{
sheet.SetColumnWidth(column.Ordinal, (arrColWidth[column.Ordinal] + 1) * 256);
}
//设置列宽
}
//headerRow.Dispose();
}
#endregion 列头及样式
rowIndex = 2;
}
#endregion 新建表，填充表头，填充列头，样式
#region 填充内容
HSSFRow dataRow = sheet.CreateRow(rowIndex) as HSSFRow;
foreach (DataColumn column in dtSource.Columns)
{
HSSFCell newCell = dataRow.CreateCell(column.Ordinal) as HSSFCell;
string drValue = row[column].ToString();
switch (column.DataType.ToString())
{
//case "System.String": //字符串类型
// double result;
// if (isNumeric(drValue, out result))
// {
// double.TryParse(drValue, out result);
// newCell.SetCellValue(result);
// break;
// }
// else
// {
// newCell.SetCellValue(drValue);
// break;
// }
case "System.DateTime": //日期类型
DateTime dateV;
DateTime.TryParse(drValue, out dateV);
newCell.SetCellValue(dateV);
newCell.CellStyle = dateStyle; //格式化显示
break;
case "System.Boolean": //布尔型
bool boolV = false;
bool.TryParse(drValue, out boolV);
newCell.SetCellValue(boolV);
break;
case "System.Int16": //整型
case "System.Int32":
case "System.Int64":
case "System.Byte":
int intV = 0;
int.TryParse(drValue, out intV);
newCell.SetCellValue(intV);
break;
case "System.Decimal": //浮点型
case "System.Double":
double doubV = 0;
double.TryParse(drValue, out doubV);
newCell.SetCellValue(doubV);
break;
case "System.DBNull": //空值处理
newCell.SetCellValue("");
break;
default:
newCell.SetCellValue(drValue);
break;
}
}
#endregion 填充内容
rowIndex++;
}
return workbook;
}
///
/// DataTable导出到Excel文件
///
/// 源DataTable
/// 表头文本
/// 保存位置
//public static void Write(HttpContext context, DataTable dtSource, string strHeaderText, string strFileName)
//{
// context.Response.Clear();
// context.Response.AddHeader("Content-Disposition", "attachment; filename=" + strFileName); //HttpUtility.UrlEncode(fileName));
// context.Response.ContentType = "application/vnd.ms-excel";
// //HSSFWorkbook hssfworkbook = GenerateData(table, headerText, sheetName, columnName, columnTitle);
// context.Response.BinaryWrite(ExportDT(dtSource, strHeaderText).GetBuffer());
// context.Response.End();
//}
public static void Write(HttpContext context, DataTable dtSource, string strHeaderText, string strFileName)
{
context.Response.Clear();
context.Response.AddHeader("Content-Disposition", "attachment; filename=" + strFileName); //HttpUtility.UrlEncode(fileName));
context.Response.ContentType = "application/vnd.ms-excel";
HSSFWorkbook hssfworkbook = ExportDT(dtSource, strHeaderText);
context.Response.BinaryWrite(WriteToStream(hssfworkbook).GetBuffer());
context.Response.End();
}
public static bool isNumeric(String message, out double result)
{
Regex rex = new Regex(@"^[-]?\d+[.]?\d*$");
result = -1;
if (rex.IsMatch(message))
{
result = double.Parse(message);
return true;
}
else
return false;
}
}
} 调用如下：
///
/// 导出网银
///
public void Excel()
{
//导出table
var MyDataTable = new DataTable();
MyDataTable.Columns.Add("id", Type.GetType("System.Int16"));
MyDataTable.Columns.Add("hope_paydate", Type.GetType("System.String"));
MyDataTable.Columns.Add("RemittanAcount", Type.GetType("System.String"));
MyDataTable.Columns.Add("RemittanDempart", Type.GetType("System.String"));
MyDataTable.Columns.Add("payee", Type.GetType("System.String"));
MyDataTable.Columns.Add("CollectingBank", Type.GetType("System.String"));
MyDataTable.Columns.Add("PaymentAccount", Type.GetType("System.String"));
MyDataTable.Columns.Add("Account", Type.GetType("System.Double"));
MyDataTable.Columns.Add("PaymentType", Type.GetType("System.String"));
MyDataTable.Columns.Add("PaymentDate", Type.GetType("System.String"));
MyDataTable.Columns.Add("PaymentYong", Type.GetType("System.String"));
MyDataTable.Columns.Add("Mark", Type.GetType("System.String"));
MyDataTable.Columns.Add("ReceivingProvinces", Type.GetType("System.String"));
MyDataTable.Columns.Add("ReceivingShi", Type.GetType("System.String"));
DataRow dr;
for (int i = 0; i <= 9; i++)
{
dr = MyDataTable.NewRow();
dr["id"] = i+1;
dr["hope_paydate"] = "222";
dr["RemittanAcount"] = "444";
dr["RemittanDempart"] = "555";
dr["payee"] = "666";
dr["CollectingBank"] = "666";
dr["PaymentAccount"] = "666";
dr["Account"] = "666";
dr["PaymentType"] = "666";
dr["PaymentDate"] = "666";
dr["PaymentYong"] = "666";
dr["Mark"] = "666";
dr["ReceivingProvinces"] = "666";
dr["ReceivingShi"] = "666";
MyDataTable.Rows.Add(dr);
}
var fileName = string.Format("网银-{0}", DateTime.Now.ToString("yyyy-MM-dd"));
string[] strFieldsName = { "序号","输入日期","汇款帐号", "汇款部门", "收款人", "收款银行","收款帐号","汇款金额","汇款类型"
,"汇款日期","汇款用途","备注", "收款省","收款市县"};
string[] strFields = { "id", "hope_paydate", "RemittanAcount", "RemittanDempart", "payee", "CollectingBank", "PaymentAccount", "Account", "PaymentType",
"PaymentDate", "PaymentYong","Mark","ReceivingProvinces","ReceivingShi"};
ExcelHelper.Write(HttpContext.Current, MyDataTable, fileName, fileName, strFields, strFieldsName, string.Format("{0}.xls", fileName));
}