Excel导入SQL数据库完整代码

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Excel导入SQL数据库完整代码 
protected   void  studentload_Click( object  sender, EventArgs e)
     { // 批量添加学生信息
         SqlConnection conn  =  DB.dataBaseConn(); // 链接数据库
         conn.Open();
           try
          {
              string  fileurl  =  typename(studentFileUpload); // 调用typename方法取得excel文件路径
             DataSet ds  =   new  DataSet(); // 取得数据集
             ds  =  xsldata(fileurl);
              int  errorcount  =   0 ; // 记录错误信息条数
              int  insertcount  =   0 ; // 记录插入成功条数
              int  updatecount  =   0 ; // 记录更新信息条数
               for  ( int  i  =   0 ; i  <  ds.Tables[ 0 ].Rows.Count; i ++ )
             {
                  string  stuid  =  ds.Tables[ 0 ].Rows[i][ 0 ].ToString();
                  string  stuname  =  ds.Tables[ 0 ].Rows[i][ 1 ].ToString();
                  string  stusex  =  ds.Tables[ 0 ].Rows[i][ 2 ].ToString();
                  string  zhuanye  =  ds.Tables[ 0 ].Rows[i][ 3 ].ToString();
                  string  classname  =  ds.Tables[ 0 ].Rows[i][ 4 ].ToString();
                  if  (stuid  !=   ""   &&  stuname  !=   ""   &&  stusex  !=   ""   &&  zhuanye  !=   ""   &&  classname  !=   "" )
                 {
                                   SqlCommand selectcmd  =   new  SqlCommand( " select count(*) from zy_class   where zhuanye=' "   +  zhuanye  +   " 'and classname=' "   +  classname  +   " ' " , conn);
                      int  count  =  Convert.ToInt32(selectcmd.ExecuteScalar());
                      if  (count  >   0 )
                     {
                         SqlCommand selectcmd2  =   new  SqlCommand( " select count(*) from stud where   stuid=' "   +  stuid  +   " ' " , conn);
                          int  count2  =  Convert.ToInt32(selectcmd2.ExecuteScalar());
                          if  (count2  >   0 )
                         {
                             SqlCommand updatecmd  =   new  SqlCommand( " update stud set   stuname=' "   +  stuname  +   " ',stusex=' "   +  stusex  +   " ',zhuanye=' "   +  zhuanyei  +   " ',classname=' "   +  classname  +   " '   where stuid=' "   +  stuid  +   " ' " , conn);
                             updatecmd.ExecuteNonQuery();
                             updatecount ++ ;
                         }
                          else
                         {
                             SqlCommand insertcmd =   new  SqlCommand( " insert into stud    values(' "   +  stuid  +   " ',' "   +  stuname  +   " ',' "   +  stusex  +   " ',' "   +  zhuanye  +   " ',' "   +  classname +   " ') " , conn);
                             insertcmd.ExecuteNonQuery();
                             insertcount ++ ;
                         }
                     }
                      else
                     {
                         Response.Write( " <script language='javascript'>alert('专业或班级信息有错！导入失败！请检查！');</script> " );
                          break ;  

                      }
                 }
                  else
                 {
                     errorcount ++ ;
                 }
             }
             Response.Write( " <script language='javascript'>alert(' "   +  insertcount  +   " 条数据导入成功！ "   +  updatecount  +   " 条数据更新成功！ "   +  errorcount  +   " 条数据部分信息为空没有导入！');</script> " );
         }
          catch  (Exception e)
         {
             Response.Write( " <script language='javascript'>alert('导入失败！');</script> " );
         }
          finally
         {
             conn.Close();
         }    
     }

// 把EXCEL文件上传到服务器并返回文件路径

private  String typename(FileUpload fileloads)
     {
          string  fullfilename  =  fileloads.PostedFile.FileName;
          string  filename  =  fullfilename.Substring(fullfilename.LastIndexOf( " \\ " )  +   1 );
          string  type  =  fullfilename.Substring(fullfilename.LastIndexOf( " . " )  +   1 );
          string  murl  =   "" ;
          if  (type  ==   " xls " )
         {
             fileloads.PostedFile.SaveAs(Server.MapPath( " excel " )  +   " \\ "   +  filename);
             murl  =  (Server.MapPath( " excel " )  +   " \\ "   +  filename).ToString();
         }
          else
         {
             Response.Write( " <script language='javascript'>alert('导入文件格式不对!');</script> " );

         }
          return  murl;
     }

    //

把excel数据读入dataset返回l数据集

private  DataSet xsldata( string  filepath)
     {
          string  strCon  =   " Provider=Microsoft.Jet.OLEDB.4.0;Data Source= "   +  filepath  +   " ;Extended Properties='Excel 8.0;IMEX=1' " ;
         System.Data.OleDb.OleDbConnection Conn  =   new  System.Data.OleDb.OleDbConnection(strCon);
          string  strCom  =   " SELECT * FROM [Sheet1$] " ;
         Conn.Open();
         System.Data.OleDb.OleDbDataAdapter myCommand  =   new  System.Data.OleDb.OleDbDataAdapter(strCom, Conn);
         DataSet ds  =   new  DataSet();
         myCommand.Fill(ds,  " [Sheet1$] " );
         Conn.Close();
          return  ds;
     } 



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