,我要爲我的客戶表一ClientsName到我的支付表的下拉列表,所以當我創建了一個支付我拿下拉列表這樣的: 下拉值變空值
所以我把一個斷點調試對我控制器和價值ClientsName總是空的,但在我看來,它總是把我的下拉列表的第一個值
型號:
public class Payments
{
[Key]
public int PaymentsId { get; set; }
public int ClientsId { get; set; }
[ForeignKey("ClientsId")]
public virtual Clients Clients { get; set; }
public String Paymentnumber { get; set; }
public DateTime PaymentDate { get; set; }
public Decimal Amount { get; set; }
public Decimal Discount { get; set; }
public String Reference { get; set; }
public String Bank { get; set; }
public Decimal Total { get; set; }
}
GET控制器:
//GET CREATE CONTROLLER
public ActionResult Create(Payments model)
{
var clientList = new PaymentsViewModel
{
Clients = new SelectList(db.ClientsList, "ClientsId", "ClientsName")
};
return View(clientList);
}
POST控制器(外延法):
public static PaymentsViewModel PaymentsCreate(this PaymentsViewModel model)
{
var paynew = new Payments
{
Paymentnumber = model.Paymentnumber,
PaymentDate = DateTime.Now.Date,
Amount = model.Amount,
Discount = model.Discount,
Reference = model.Reference,
Bank = model.Bank,
Total = model.Amount - model.Discount
};
db.PaymentsList.Add(paynew);
db.SaveChanges();
return model;
}
}
CREATE VIEW:
@Html.DropDownListFor(x => x.Clients, Model.Clients, new { @class = "form-control", @required = "required" })
我真不知道這裏發生了什麼
您的HTML下拉列表中沒有空白值,因此如果您未指定要選擇的選項,它將始終顯示第一個選項。你的問題和問題是什麼? –
如何指定我選擇的選項?注意:我更新我的視圖 – Demain
您是否希望下拉列表選擇空白或特定項目? –