Newtonsoft JSON不包含「項目」

我想從JSON數組JSON對象在我的web服務項目定義...和我得到這個錯誤：Newtonsoft JSON不包含「項目」

Newtonsoft JSON does not contain definition for 'Item' ,

我也嘗試過使用其他功能，而不是「產品」的功能，但是這不是工作壓力太大

通過我用VB到C＃在線轉換工具來生成這種代碼的方式...

這是我的代碼

try 
     { 
      HttpContext context = this.Context; 
      string strJson = ""; 

      JArray OrderItems = JArray.Parse(JSONString); 
      //Dim IncrementalConnection As New SqlConnection() 
      SqlConnection conn = new SqlConnection(connectionString); 
      conn.Open(); 
      SqlCommand IncrementalIdCommand = new SqlCommand("INSERT INTO TheOrderIds DEFAULT VALUES; SET @AutoID=SCOPE_IDENTITY()", conn); 
      SqlParameter Param = new SqlParameter(); 
      Param.ParameterName = "@AutoID"; 
      Param.Size = 4; 
      Param.Direction = ParameterDirection.Output; 
      IncrementalIdCommand.Parameters.Add(Param); 
      IncrementalIdCommand.ExecuteNonQuery(); 
      int OrderId = Convert.ToInt32(Param.Value); 
      conn.Close(); 

      foreach (JObject OrderItem in OrderItems) 
      { 
       string strSQL = "insert into Orders(ProductNumber,Name,Category,Price,OrderId,TableNumber,WaiterName,CashierName,DateAndTime,isActive,isCoocked,isPaid,isYesCanceled,ProductQuantity,extraQty,PaidDate,isDiscounted, DicountPercent, AfterDiscount) values(@x,@y,@a,@b,@c,@d,@e,@f,@g,@h,@i,@j,@k,@l,0,getDate(),0,0,0)"; 
       conn.Open(); 
       SqlCommand cmd = new SqlCommand(strSQL, conn); 
       cmd.Parameters.AddWithValue("@x", OrderItem.Item("ProductNumber").ToString()); 
       cmd.Parameters.AddWithValue("@y", OrderItem.Item("Name").ToString()); 
       cmd.Parameters.AddWithValue("@a", OrderItem.Item("Category").ToString()); 
       cmd.Parameters.AddWithValue("@b", OrderItem.Item("Price").ToString()); 
       cmd.Parameters.AddWithValue("@c", OrderId); 
       cmd.Parameters.AddWithValue("@d", OrderItem.Item("TableNumber").ToString()); 
       cmd.Parameters.AddWithValue("@e", OrderItem.Item("WaiterName").ToString()); 
       cmd.Parameters.AddWithValue("@f", OrderItem.Item("CashierName").ToString()); 
       cmd.Parameters.AddWithValue("@g", OrderItem.Item("DateAndTime").ToString()); 
       cmd.Parameters.AddWithValue("@h", OrderItem.Item("isActive").ToString()); 
       cmd.Parameters.AddWithValue("@i", OrderItem.Item("isCoocked").ToString()); 
       cmd.Parameters.AddWithValue("@j", OrderItem.Item("isPaid").ToString()); 
       cmd.Parameters.AddWithValue("@k", OrderItem.Item("isYesCanceled").ToString()); 
       cmd.Parameters.AddWithValue("@l", OrderItem.Item("ProductQuantity").ToString()); 
       cmd.ExecuteNonQuery(); 
       conn.Close(); 
      } 
      //ProductNumber As [String], Name As [String], Category As [String], Price As [String], OrderId As [String]' 
      //this is the bridge to database\ 

      string json = "{\"result\":\"1\", \"exception\":" + "" + "\"" + "NULL" + "\"" + "\"}"; 
      context.Response.Write(strJson); 

     } 
     catch (Exception ex) 
     { 
      string json = "{\"result\":\"0\", \"exception\":" + "" + ex.Message + "\"}"; 
      Context.Response.Write(json); 

     }

來源

2015-09-26 Yahya Zakariya

在c＃中，只需通過以訪問list的元素的相同方式添加[]即可訪問對象的indexer。 JObject有一個索引器，它接收一個字符串並返回該名稱的屬性值。因此你需要這樣做：

  cmd.Parameters.AddWithValue("@x", OrderItem["ProductNumber"].ToString());

和其他呼叫cmd.Parameters.AddWithValue()類似。

來源

2015-09-26 17:08:13 dbc

Newtonsoft JSON不包含「項目」

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