asp.net에서 execl 파일을 업로드한 후 페이지에 디스플레이를 불러오기 (예시 코드)

 
  
    #region   Execl   
  
    protected void Button1_Click(object sender, EventArgs e) 
  
    { 
  
        if (FileUpload1.HasFile) 
  
        { 
  
            string NewFileName = string.Empty; 
  
            string ErrorMess = UpLoadFile(FileUpload1, ".xls|.xlsx", 1024 * 5, Server.MapPath("/Report/SocialApply/"), 1, out NewFileName); 
  
            if (string.IsNullOrEmpty(ErrorMess)) 
  
            { 
  
                Label1.Text = "√      "; 
  
                ViewState["UpLoadFile"] = "/Report/SocialApply/" + NewFileName; 
  
                try 
  
                { 
  
                    FileStream file = new FileStream 
  
                        (Server.MapPath(ViewState["UpLoadFile"] as string), 
  
                        FileMode.Open, FileAccess.Read, 
  
                        FileShare.ReadWrite); 
  
                    DataTable dt1 = FairHR.Util.XmlExcelReport.ReadExcelToDataTable(file, 0, 0); 
   
  
                    ViewState.Add("ViewDT", dt1);
                    GridView1.DataSource = ViewState["ViewDT"] as DataTable;
                    GridView1.DataBind();
                    file.Close();
                    //Maticsoft.Common.MessageBox.ResponseScript(Page, "$.messager.alert('    ', '    ！', 'info');");
                }
                catch
                {
                    Maticsoft.Common.MessageBox.ResponseScript(Page, "$.messager.alert('    ', '     Execl     ', 'warning');");
                }
            }
            else
            {
                Label1.Text = "×      ";
            }
        }
        else
        {
            Label1.Text = "×        ";
        }
        ScriptManager.RegisterClientScriptBlock(Page, this.GetType(), "idAlert1", "closeLoad();", true);
    }
    #endregion
 
  
    #region     
    /// 

    ///     
    /// 

    ///     
    ///       ,  .jpg|.gif|.bmp
    ///         ，   k
    ///     ，   server.mappath
    /// 1     ,0   
    /// 
    public static string UpLoadFile(FileUpload fu, string type, int size, string path, int nametype, out string newFileName)
    {
        newFileName = null;
        string erorr = null;
        int Size = fu.PostedFile.ContentLength / 1024;
        if (Size > size)
        {
            erorr = "      ！";
            return erorr;
        }
        string Type = fu.FileName;
        if (Type.IndexOf(".") == -1) { erorr = "        ！"; return erorr; }
        Type = Type.Substring(Type.LastIndexOf(".")).ToUpper();
        type = type.ToUpper();
        if (type.IndexOf(Type) == -1) { erorr = "        ！"; return erorr; }
 
  
        string filename = "";
        if (nametype == 1)
        {
            string nowdate = DateTime.Now.ToString();
            nowdate = nowdate.Replace(":", "").Replace(" ", "").Replace("-", "").Trim();
            Random r = new Random();
            int a = r.Next(1000);
            filename = nowdate + a.ToString() + Type;
            newFileName = filename;
        }
        else
        {
            filename = fu.FileName;
            if (System.IO.File.Exists(path + filename)) { erorr = "        ！"; return erorr; }
        }
 
  
        fu.SaveAs(path + filename);
        return erorr;//         ，      null
    }
    #endregion