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在开发应用中xls文件导入到数据库教程是常用的，下面我们来看这款程序，有需要的朋友可以下载。

using system;
using system.configuration;
using system.data;
using system.web;
using system.web.security;
using system.web.ui;
using system.web.ui.htmlcontrols;
using system.web.ui.webcontrols;
using system.web.ui.webcontrols.webparts;
using system.io;   public partial class _default : system.web.ui.page
{
    protected void page_load(object sender, eventargs e)
    {     }               ///

    /// 上传excel文件
    ///

    /// 上传的控件名
    ///
    private string uploadxls(system.web.ui.htmlcontrols.htmlinputfile inputfile)
    {
        string orifilename = string.empty;
        string uploadfilepath = string.empty;
        string modifyfilename = string.empty;
        string fileext = "" ;//文件扩展名
        int filesize = 0;//文件大小
        try
        {
            if(inputfile.value != string.empty)
            {
                //得到文件的大小
                filesize = inputfile.postedfile.contentlength;
                if(filesize == 0 )
                {
                    throw new exception("导入的excel文件大小为0，请检查是否正确！");
                }
                //得到扩展名
                fileext = inputfile.value.substring(inputfile.value.lastindexof(".")+1);
                if(fileext.tolower() != "xls")
                {                                                              throw new exception("你选择的文件格式不正确，只能导入excel文件！");
                }
                //路径
                uploadfilepath = server.mappath("~/");
                //新文件名
                modifyfilename = system.guid.newguid().tostring();
                modifyfilename += "."+inputfile.value.substring(inputfile.value.lastindexof(".")+1);
                //判断是否有该目录
                system.io.directoryinfo dir = new system.io.directoryinfo(uploadfilepath);                                                   if (!dir.exists)
                {
                    dir.create();
                }
                orifilename = uploadfilepath+modifyfilename;
                //如果存在,删除文件
                if(file.exists(orifilename))
                {
                    file.delete(orifilename);
                }
                // 上传文件
                inputfile.postedfile.saveas(orifilename);
            }
            else
            {
                throw new exception("请选择要导入的excel文件!");                                   }
        }
        catch(exception ex)
        {
            throw ex;
        }
        return orifilename;
    }           protected void btnimport_click(object sender, system.eventargs e)
    {              try
      {
          string strfilename = this.uploadxls(this.comfile);
          string strconn = "provider=microsoft.jet.oledb.4.0;data source=" + strfilename + ";extended properties="excel 8.0;hdr=no;imex=1"";
          oledbconnection conn = new oledbconnection(strconn);
          oledbdataadapter mycommand = new oledbdataadapter("select * from [sheet1$]", strconn);
          dataset mydataset = new dataset();
          mycommand.fill(mydataset);
          string str = "";
      }
      catch (exception ex)
      {
          throw ex;
      }
      finally
      {
          deletefile(strfilename);
      }       

    }           ///

    /// 删除文件
    ///

    /// 待删除的文件名
    private void deletefile(string filename)
    {
        if (filename != string.empty && file.exists(filename))
        {
            file.delete(filename);
        }
    }
} 

前台代码

<%@ page language="c#" default.asp教程x.cs" inherits="_default" %>



   


   

        请选择要导入的文件：
        css教程class="button" runat="server" onclick="btnimport_click">

       
   

本文来源：http://www.gdgbn.com/jiaocheng/29362/