如何在一次執行多個請求

Question

對於我的培訓生，我必須做一些SQL請求。

我嘗試這transfert從csv文件數據到SQL服務器數據庫

string str = Path.GetFullPath("."); 
    String conn = @"Provider=Microsoft.Jet.OLEDB.4.0;Extended Properties=""Text;HDR=No;FMT=Delimited"";Data Source="+str+""; 
    string strCnx = "Database=" + ConfigurationManager.AppSettings["base"] + ";data source=" + ConfigurationManager.AppSettings["servername"] + ";User Id=" + ConfigurationManager.AppSettings["user"] + ";Password=" + ConfigurationManager.AppSettings["password"] + ";Connect Timeout=10"; 
    // Open a sourceConnection to the AdventureWorks database. 
    //using (OleDbConnection sourceConnection = new OleDbConnection(strCnx)) 
    { 
     //sourceConnection.Open(); 

     // Get data from the source table as a SqlDataReader. 
     OleDbConnection cn = new OleDbConnection(conn); 
     OleDbCommand commandSourceData = new OleDbCommand("SELECT * FROM [" + ConfigurationManager.AppSettings["csvname"] + "]", cn); 
     OleDbDataAdapter da = new OleDbDataAdapter(commandSourceData); 
     cn.Open(); 
     OleDbDataReader reader = commandSourceData.ExecuteReader(); 

     // Open the destination connection. In the real world you would 
     // not use SqlBulkCopy to move data from one table to the other 
     // in the same database. This is for demonstration purposes only. 
     using (SqlConnection destinationConnection = new SqlConnection(strCnx)) 
     { 
      destinationConnection.Open(); 

      // Set up the bulk copy object. 
      // Note that the column positions in the source 
      // data reader match the column positions in 
      // the destination table so there is no need to 
      // map columns. 
      using (SqlBulkCopy bulkCopy = new SqlBulkCopy(destinationConnection)) 
      { 
       bulkCopy.DestinationTableName = "GudsisUser"; 

       bulkCopy.WriteToServer(reader); 
      } 
      Console.WriteLine("Press Enter to finish."); 
      Console.ReadLine(); 
     } 

但應用程序返回一個錯誤消息：無法解析字符串值轉換爲NCHAR值

我不知道如果我PROGRAMM正確與否

Answer 1

我猜你在找什麼東西叫BULK INSERT（做一個DB請求中的一切嗎？）

如果是這樣，看看答案here