從Excel導入數據通過c＃.net訪問數據庫

我正在使用c＃.net中的Windows應用程序，我需要通過使用c＃中的代碼將Excel表導入Access數據庫。我發現在網絡上下面的代碼，並試圖使用：從Excel導入數據通過c＃.net訪問數據庫

string path = @"D:\project_excel"; 
     OleDbConnection con; 
     System.Data.DataTable dt = null; 
     //Connection string for oledb 
     string conn = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" + path + "; Extended Properties=Excel 8.0;"; 
     con = new OleDbConnection(conn); 
     try 
     { 
      con.Open(); 

      dt = con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null); 
      String[] excelsheets = new String[dt.Rows.Count]; 
      int i = 0; 

      foreach (DataRow dr in dt.Rows) 
      { 
       excelsheets[i] = dr["TABLE_NAME"].ToString(); 
       i++; 
      } 
      // here i manaually give the sheet number in the string array 
      DataSet ds = new DataSet(); 
      foreach (string temp in excelsheets) 
      { 
       // Query to get the data for the excel sheet 
       //temp is the sheet name 
       string query = "select * from [" + temp + "]"; 
       OleDbDataAdapter adp = new OleDbDataAdapter(query, con); 
       adp.Fill(ds, temp);//fill the excel sheet data into a dataset ds 
      } 

     } 
     catch (Exception ex) 
     { 

     } 
     finally 
     { 
      con.Close(); 
     }

但是它給出了下面提及的異常：