////实现基类
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using Aspose.Cells;
namespace Lzd.Mvc.EasyUi.Common.ExcelUtil
{
///
/// Excel帮助类
///
public class ExcelUtil :BaseExcelUtil
{
private DataTable dt;
private string title;
public ExcelUtil() {
}
///
/// 从第几行开始读取
///
public int FirstRow { get; set; }
///
/// 从第几列开始读取
///
public int FirstColumns { get; set; }
///
/// excel标题
///
public string Title
{
get { return title; }
set { title = value; }
}
private string fileName;
///
/// 文件名
///
public string FileName
{
get { return fileName; }
set { fileName = value; }
}
public DataTable Dt
{
get { return dt; }
set { dt = value; }
}
public bool Flag
{
set;
get;
}
///
///
///导出设定值
public override void setValue(Workbook wb)
{
int index = 0;
Worksheet ws = null;
int rcount = dt.Rows.Count, columns = dt.Columns.Count;
if (dt != null && dt.Rows.Count > 0)
{
index = wb.Worksheets.AddCopy(0);
ws = wb.Worksheets[index];
ws.Name = FileName.Replace(".xls", "");
try
{
putValue(ws.Cells[0, 0], this.title);
int i = 1;
for (int j = 0; j < columns; j++)
{
putValue(ws.Cells[1, j], dt.Columns[j].ColumnName);
}
for (int j = 0; j < rcount; j++)
{
i++;
for (int h = 0; h < columns; h++)
{
putValue(ws.Cells[i, h], dt.Rows[j][h].ToString());
}
}
wb.Worksheets.RemoveAt(0);
}
catch (Exception ex)
{
throw ex;
}
}
}
///
/// 导入excel
///
/// 读取的文件名
/// 从第几行开始读取
/// 从第几列开始读取
///
///
public override DataTable getValue(Workbook wb)
{
Worksheet sheet = wb.Worksheets[0];
Cells cells = sheet.Cells;
return cells.ExportDataTableAsString(FirstRow, FirstColumns, cells.MaxDataRow + 1, cells.MaxDataColumn + 1, true);
}
}
}
/////导出调用方法
public ActionResult ToExcel() {
List list = new List();
for (int i = 0; i < 100; i++)
{
UserInfo info = new UserInfo();
info.Age = i.ToString();
info.ID = i;
info.Name = "姓名" + i;
list.Add(info);
}
///将list类型转换为datatable
DataTable dt= DataTableHelper.IListToDataTable(list);
//实例化帮助类
ExcelUtil exc = new ExcelUtil();
exc.Dt = dt;
exc.FileName = "导出测试.xls";
exc.Title = "导出测试";
//需要写入的模板
string url = Server.MapPath("/Content/Down/template.xls");
byte[] data = exc.CreateExcel(url);
//浏览器下载文件
Response.AppendHeader("Content-Disposition", "attachment; filename=" + exc.FileName);//HttpUtility.UrlEncode(r.FileName, Encoding.UTF8));
Response.ContentType = "application/ms-excel";
Response.AddHeader("Content-Length", data.Length.ToString());
Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8");
Response.BinaryWrite(data);
System.Web.HttpContext.Current.ApplicationInstance.CompleteRequest();
return Content("ss");
}
