实例介绍
【实例简介】导出excel，并添加图片
【实例截图】
【实例截图】
【核心代码】
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using System.Drawing.Imaging;
using System.Drawing;
using NPOI;
using NPOI.HSSF.UserModel;
using NPOI.SS.UserModel;
using System.Text;
using NPOI.SS.Util;
using System.Collections;
using System.Text.RegularExpressions;
using NPOI.HPSF;
using Gma.QrCodeNet.Encoding;
using Gma.QrCodeNet.Encoding.Windows.Render;
public partial class DemoExport : System.Web.UI.Page
{
private static readonly string imageBasePath = "D:\\PathConfig\\";
private static readonly string excelBasePath = "D:\\PathConfig\\";
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
Bind();
}
}
protected void Bind()
{
//string jsonobjstr = HttpHelper.QueryString("json", "");
List<PrintCard> cards = new List<PrintCard>()
{
new PrintCard{ CardCode="0230010900010336",Password= "123456"},
new PrintCard{ CardCode="0230010900010339",Password="123456"},
new PrintCard{ CardCode="0230010900010340",Password= "123456"},
new PrintCard{ CardCode="0230000900010340",Password= "123456"},
new PrintCard{ CardCode="0230020900010349",Password="123456"}
};
try
{
// cards = JsonHelper.JsonDeserialize<List<Card>>(jsonobjstr);
Session["ListPrintCard"] = cards;
gvCardList.DataSource = cards;
gvCardList.DataBind();
}
catch (Exception ex)
{
Page.ClientScript.RegisterStartupScript(this.GetType(), "key", "<script>alert('" ex.Message.ToString() "');</script>");
return;
}
}
public class PrintCard
{
public string CardCode { get; set; }
public string Password { get; set; }
}
/// <summary>
/// 生成二维码
/// </summary>
/// <param name="QrCodeStr">二维码字符串</param>
/// <returns></returns>
public string GetQrCode(string QrCodeStr)
{
string FileName = imageBasePath Guid.NewGuid().ToString() ".png";
try
{
QrEncoder qrEncoder = new QrEncoder(ErrorCorrectionLevel.L);
QrCode qrCode = new QrCode();
qrEncoder.TryEncode(QrCodeStr, out qrCode);
GraphicsRenderer renderer = new GraphicsRenderer(new FixedModuleSize(5, QuietZoneModules.Two), Brushes.Black, Brushes.White);
using (FileStream stream = new FileStream(FileName, FileMode.Create))
{
renderer.WriteToStream(qrCode.Matrix, ImageFormat.Png, stream);
}
}
catch (Exception ex)
{
FileName = "";
throw ex;
}
return FileName;
}
protected void btnGenerateCode_Click(object sender, EventArgs e)
{
//GenerateQrCodeNet();
AddPicture();
}
/// <summary>
/// 二维码导出到Excel
/// </summary>
protected void AddPicture()
{
try
{
if (!Directory.Exists(imageBasePath))
{
Directory.CreateDirectory(imageBasePath);
}
if (!Directory.Exists(excelBasePath))
{
Directory.CreateDirectory(excelBasePath);
}
//创建工作薄
HSSFWorkbook workbook = new HSSFWorkbook();
//create sheet
HSSFSheet sheet = (HSSFSheet)workbook.CreateSheet("Sheet1");
string FileName = excelBasePath DateTime.Now.ToString("yyyyMMddhh24mss") ".xls";
#region 右击文件 属性信息
//{
// DocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation();
// dsi.Company = "http://....../";
// workbook.DocumentSummaryInformation = dsi;
// SummaryInformation si = PropertySetFactory.CreateSummaryInformation();
// if (HttpContext.Current.Session["realname"] != null)
// {
// si.Author = HttpContext.Current.Session["realname"].ToString();
// }
// else
// {
// if (HttpContext.Current.Session["username"] != null)
// {
// si.Author = HttpContext.Current.Session["username"].ToString();
// }
// } //填加xls文件作者信息
// si.ApplicationName = "NPOI"; //填加xls文件创建程序信息
// si.LastAuthor = "OA系统"; //填加xls文件最后保存者信息
// si.Comments = "OA系统自动创建文件"; //填加xls文件作者信息
// si.Title = "ddd"; //填加xls文件标题信息
// si.Subject = "ddd"; //填加文件主题信息
// si.CreateDateTime = DateTime.Now;
// workbook.SummaryInformation = si;
//}
#endregion
string strQrCodePath = "";
//填充列标题以及样式
int rowsNum = 0; //行号
HSSFRow headerRow = (HSSFRow)sheet.CreateRow(rowsNum);
HSSFCellStyle headStyle = (HSSFCellStyle)workbook.CreateCellStyle();
headStyle.Alignment = (HorizontalAlignment)HorizontalAlignment.Center;
headerRow.HeightInPoints = 30;
HSSFFont font = (HSSFFont)workbook.CreateFont();
font.FontHeightInPoints = 13;
font.Boldweight = 700;
headStyle.SetFont(font);
//headerRow.CreateCell(0, CellType.String).SetCellValue("卡二维码");
//CellRangeAddress cellRangeAddress = new CellRangeAddress(0, 0, 0, 4);
//sheet.AddMergedRegion(cellRangeAddress);
//headerRow.CreateCell(5, CellType.String).SetCellValue("卡号");
//CellRangeAddress cellRangeAddress1 = new CellRangeAddress(0, 0, 5, 8);
//sheet.AddMergedRegion(cellRangeAddress1);
//headerRow.CreateCell(9, CellType.String).SetCellValue("密码");
//CellRangeAddress cellRangeAddress2 = new CellRangeAddress(0, 0, 9, 12);
//sheet.AddMergedRegion(cellRangeAddress2);
for (int i = 0; i < 12; i )
{
if (i == 0)
{
headerRow.CreateCell(i, CellType.String).SetCellValue("卡二维码");
}
else if (i == 5)
{
headerRow.CreateCell(i, CellType.String).SetCellValue("卡号");
}
else if (i == 9)
{
headerRow.CreateCell(i, CellType.String).SetCellValue("密码");
}
else
{
headerRow.CreateCell(i, CellType.String).SetCellValue("");
}
}
//合并列头单元格
CellRangeAddress cellRangeAddress = new CellRangeAddress(0, 0, 0, 4);
sheet.AddMergedRegion(cellRangeAddress);
CellRangeAddress cellRangeAddress1 = new CellRangeAddress(0, 0, 5, 8);
sheet.AddMergedRegion(cellRangeAddress1);
CellRangeAddress cellRangeAddress2 = new CellRangeAddress(0, 0, 9, 12);
sheet.AddMergedRegion(cellRangeAddress2);
//设置列的宽度
for (int columnindex = 0; columnindex < 3; columnindex )
{
headerRow.GetCell(columnindex).CellStyle = headStyle;
sheet.SetColumnWidth(columnindex, 5000);
}
//填充数据行
HSSFRow row = null;
rowsNum = 1; //行号，从第2行开始
List<PrintCard> list = (List<PrintCard>)Session["ListPrintCard"];
foreach (PrintCard p in list)
{
//写入字段值
row = (HSSFRow)sheet.CreateRow(rowsNum);
HSSFCellStyle cellStyle = (HSSFCellStyle)workbook.CreateCellStyle();
cellStyle.Alignment = (HorizontalAlignment)HorizontalAlignment.Center;
row.HeightInPoints = 120;
HSSFFont cellfont = (HSSFFont)workbook.CreateFont();
cellfont.FontHeightInPoints = 10;
cellStyle.SetFont(cellfont);
row.CreateCell(0, CellType.String).SetCellValue("");
row.CreateCell(1, CellType.String).SetCellValue(p.CardCode);
row.CreateCell(2, CellType.Blank).SetCellValue(p.Password);
//合并单元格
//CellRangeAddress rowCellRangeAddress = new CellRangeAddress(rowsNum, rowsNum, 2, 4);
//sheet.AddMergedRegion(rowCellRangeAddress);
strQrCodePath = GetQrCode(p.CardCode);
byte[] bytes = System.IO.File.ReadAllBytes(strQrCodePath);
int pictureIdx = workbook.AddPicture(bytes, PictureType.PNG);
// Create the drawing patriarch. This is the top level container for all shapes.
HSSFPatriarch patriarch = (HSSFPatriarch)sheet.CreateDrawingPatriarch();
//add a picture
HSSFClientAnchor anchor = new HSSFClientAnchor(0, 10, 1023, 0, 0, rowsNum, 0, rowsNum);
HSSFPicture pict = (HSSFPicture)patriarch.CreatePicture(anchor, pictureIdx);
pict.Resize();
//设置行的高度
for (int rowindex = 0; rowindex < 3; rowindex )
{
row.GetCell(rowindex).CellStyle = cellStyle;
}
rowsNum ;
//删除图片文件
if (File.Exists(strQrCodePath))
{
File.Delete(strQrCodePath);
}
}
//供浏览器下载Excel
if (HttpContext.Current.Request.Browser.Browser == "IE")
FileName = HttpUtility.UrlEncode(FileName);
using (MemoryStream ms = new MemoryStream())
{
workbook.Write(ms);
ms.Flush();
ms.Position = 0;
HttpContext curContext = HttpContext.Current;
// 设置编码和附件格式
curContext.Response.ContentType = "application/vnd.ms-excel";
curContext.Response.ContentEncoding = Encoding.UTF8;
curContext.Response.Charset = "";
curContext.Response.AppendHeader("Content-Disposition",
"attachment;filename=" HttpUtility.UrlEncode(FileName, Encoding.UTF8));
curContext.Response.BinaryWrite(ms.GetBuffer());
ms.Close();
ms.Dispose();
curContext.Response.End();
}
}
catch (Exception ex)
{
Page.ClientScript.RegisterStartupScript(this.GetType(), "key", "<script>alert('" ex.Message.ToString() "');</script>");
}
}
protected void gvCardList_RowCommand(object sender, GridViewCommandEventArgs e)
{
string cardCode = e.CommandArgument.ToString();
}
}
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