net Excel数据导入到数据库
.net Excel数据导入到数据库
一.数据库向导本来就可以这样导入,在Excel建的字段，必须在table表中也得有字段.

二.读取excel文件中的数据

先在类中定义一个方法名为ExecleDs的方法,用于将Excel表里的数据填充到DataSet中,代码如下：
public DataSet ExecleDs(string filenameurl,string table)
          {
             string strConn = "Provider=Microsoft.Jet.OleDb.4.0;" + "data source=" +filenameurl+ ";Extended Properties='Excel 8.0; HDR=YES; IMEX=1'";
              OleDbConnection conn = new OleDbConnection(strConn);
       
              OleDbDataAdapter odda = new OleDbDataAdapter("select * from [Sheet1$]",conn);
              DataSet ds = new DataSet();
              odda.Fill(ds,table);
      
             return ds;

          }

当点击添加按钮时激发事件,代码如下
protected void Button1_Click(object sender, EventArgs e)
  {
       if (FileUpload1.HasFile == false)
      {
            Response.Write("<script>alert('请您选择Excel文件')</script> ");
           return;//当无文件时,返回
        }
       string IsXls=System.IO.Path.GetExtension(FileUpload1.FileName).ToString().ToLower();
        if (IsXls != ".xls")
      {
            Response.Write("<script>alert('只可以选择Excel文件')</script>");
          return;//当选择的不是Excel文件时,返回
        }
       string error = null;
       Access.Class1 ac = new Access.Class1();
       SqlConnection cn = ac.myConnection();
        cn.Open();
       string strpath = FileUpload1.PostedFile.FileName.ToString();   //获取Execle文件路径
       string filename = FileUpload1.FileName;                       //获取Execle文件名
         DataSet ds = ac.ExecleDs(strpath,filename);
       DataRow[] dr = ds.Tables[0].Select();                        //定义一个DataRow数组
        int rowsnum = ds.Tables[0].Rows.Count;
      if (rowsnum == 0)                                
      {
            Response.Write("<script>alert('Excel表为空表,无数据!')</script>");   //当Excel表为空时,对用户进行提示
       }
     else
      {
         for (int i = 0; i < dr.Length; i++)
           {
               string YHMC = dr[i]["YongHuMingCheng"].ToString();
            string YHMM = dr[i]["YongHuMiMa"].ToString();
                string DQRQ = dr[i]["DaoQiRiQi"].ToString();
              string ZT = dr[i]["ZhuangTai"].ToString();
                string TJSJ = dr[i]["TianJiaShiJian"].ToString();
               string JXDM = dr[i]["JiaXiaoDaiMa"].ToString();
               string sqlcheck = "select count(*) from DC_YongHuLieBiao where YongHuMingCheng='" + YHMC + "'And JiaXiaoDaiMa='" + JXDM + "'";  //检查用户是否存在
                bool ch = ac.check(sqlcheck);   
             if (ch == true)
              {
                   string insertstr = "insert into DC_YongHuLieBiao(YongHuMingCheng,YongHuMiMa,DaoQiRiQi,ZhuangTai,TianJiaShiJian,JiaXiaoDaiMa) values('" +
                                         YHMC + "','" + YHMM + "','" + DQRQ + "','" + ZT + "','" + TJSJ + "','" + JXDM + "')";
                    SqlCommand cmd = new SqlCommand(insertstr,cn);
              try
                  {
                     cmd.ExecuteNonQuery();
                    }     catch (MembershipCreateUserException ex)       //捕捉异常
                    {
                        Response.Write("<script>alert('创建用户:"+ex.Message+"')</script>");
                    }
              }
              else
             {
                    error += "<em style='color:red;font-sixe:25px'>"+YHMC+"</em>用户