Question

可以用这种方式填充我的文本框吗？在选择“无法隐式转换类型system.Linq.Querable”

时收到错误

基本上我正在尝试为数据库创建一个，然后使用此连接填充Web表单上的其余文本框。

非常感谢任何帮助或指示。

  private void Loadorder()
        {
            using (tyrescannerdatabaseEntities dbcontext = new tyrescannerdatabaseEntities())

               query = (from Orders in dbcontext.Orders

                        join customer in dbcontext.Customers on Orders.CustomerID equals customer.CustomerID

                        join link_orderproduct in dbcontext.Link_OrderProduct on Orders.OrderID equals link_orderproduct.OrderID

                        join product in dbcontext.Products on link_orderproduct.ProductID equals product.ProductID

                        join garage in dbcontext.Garages on link_orderproduct.GarageID equals garage.GarageID

                         where Orders.OrderID == orderId.Value

                         select new DataMode
                         {
                         OrderID = Orders.OrderID,
                         Name = customer.Name
                         };


    private void SetControlsWithRecord()
    {
        txtOrderID.Text = query.OrderID.ToString();
        txtCustomer.Text = query.Customer.Name.ToString();
    }

 class DataMode
{
    public int OrderID { get; set; }
    public string Name { get; set; }
    public string ContactNo { get; set; }
    public string Registration { get; set; }
    public string Brand { get; set; }
    public string TyreModel { get; set; }
    public decimal Width { get; set; }
    public string Profile { get; set; }
    public string Diamete { get; set; }
    public string Speed { get; set; }
    public string FittingDate { get; set; }
    public decimal ProductUnitSalePrice { get; set; }
    public string ProductQuantity { get; set; }
    public string TotalProductSaleCost { get; set; }
    public string MOT { get; set; }
    public string AirConRecharge { get; set; }
    public string WheelTracking { get; set; }
    public string MOTS { get; set; }

}

Answer 1

query = (from Orders in dbcontext.Orders

                    join customer in dbcontext.Customers on Orders.CustomerID equals customer.CustomerID

                    join link_orderproduct in dbcontext.Link_OrderProduct on Orders.OrderID equals link_orderproduct.OrderID

                    join product in dbcontext.Products on link_orderproduct.ProductID equals product.ProductID

                    join garage in dbcontext.Garages on link_orderproduct.GarageID equals garage.GarageID

                     where Orders.OrderID == orderId.Value

                     select new DataMode
                     {
                     OrderID = Orders.OrderID,
                     Name = customer.Name
                     }).ToList();

在查询结尾处添加此ToList()。并从此处删除

txtOrderID.Text = query.OrderID.ToString();
    txtCustomer.Text = query.Customer.Name.ToString();

用我的实体框架填充我的文本框

1 个答案: