Question

我正在为UWP编写一个应用程序。

我尝试根据此答案link使用数据绑定。

以下是我的课程：

CREATE PROCEDURE [dbo].[GetMaxId] (
    @id varchar(50)
    @table varchar(50)
)
AS
BEGIN
    DECLARE @sql NVARCHAR(MAX);

    SET @sql = N'SELECT MAX(@id) FROM @table';
    SET @sql = REPLACE(REPLACE(@sql, '@id', QUOTENAME(@id)), '@table', QUOTENAME(@table));

    EXEC sp_executesql @sql;
END;  -- GetMaxId

以下是代码：

 public class Billing
    {
        public string first_name { get; set; }
        public string last_name { get; set; }
        public string company { get; set; }
        public string address_1 { get; set; }
        public string address_2 { get; set; }
        public string city { get; set; }
        public string state { get; set; }
        public string postcode { get; set; }
        public string country { get; set; }
        public string email { get; set; }
        public string phone { get; set; }          
    }

    public class Shipping
    {
        public string first_name { get; set; }
        public string last_name { get; set; }
        public string company { get; set; }
        public string address_1 { get; set; }
        public string address_2 { get; set; }
        public string city { get; set; }
        public string state { get; set; }
        public string postcode { get; set; }
        public string country { get; set; }
    }

    public class RootObject
    {
        public int id { get; set; }
        public int parent_id { get; set; }
        public string status { get; set; }

        public string order_key { get; set; }
        public string currency { get; set; }
        public string version { get; set; }
        public bool prices_include_tax { get; set; }
        public string date_created { get; set; }
        public string date_modified { get; set; }
        public int customer_id { get; set; }
        public double discount_total { get; set; }
        public double discount_tax { get; set; }
        public double shipping_total { get; set; }
        public double shipping_tax { get; set; }
        public double cart_tax { get; set; }
        public double total { get; set; }
        public double total_tax { get; set; }
        public Billing billing { get; set; }
        public Shipping shipping { get; set; }
        public string payment_method { get; set; }
        public string payment_method_title { get; set; }
        public string transaction_id { get; set; }
        public string customer_ip_address { get; set; }
        public string customer_user_agent { get; set; }
        public string created_via { get; set; }
        public string customer_note { get; set; }
        public string date_completed { get; set; }
        public string date_paid { get; set; }
        public string cart_hash { get; set; }
        public List<object> line_items { get; set; }
        public List<object> tax_lines { get; set; }
        public List<object> shipping_lines { get; set; }
        public List<object> fee_lines { get; set; }
        public List<object> coupon_lines { get; set; }
    }

    public ObservableCollection<RootObject> Orders { get; set; }

List<RootObject> rootObjectData = JsonConvert.DeserializeObject<List<RootObject>>(products); foreach (RootObject root in rootObjectData) { string date = root.date_created; string name = root.billing.first_name + root.billing.last_name ; Orders = new ObservableCollection<RootObject> { new RootObject { date_created = date,billing = name } }; }我收到此错误：billing = name

如何修复此错误？也许这很简单，但我找不到解决方案。谢谢你的帮助!!

Answer 1

使用billing = name我有这样的错误：无法将类型'string'隐式转换为'Milano.InWork.Billing'

当然会发生此错误，班级billing中的RootObject数据类型为Billing，这是您定义的另一个类。

仅从您的代码中我想您只想在first_name中将last_name和root.billing显示为字符串，然后您可以更改public Billing billing { get; set; }中的代码RootObject {1}}课程为public string billing { get; set; }。

在ObservableCollection中转换（C＃uwp）

1 个答案: