c# - 使用 IModelBinder 自定义模型绑定(bind)

Question

我正在尝试编写自定义模型 Binder ，但出现错误，有人能告诉我哪里做错了吗？

using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Mvc;
namespace MvcApplication1.Models
{
public class CustomModelBinder : IModelBinder
{
    public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
    {
        Ownership own = new Ownership();
        own.name = controllerContext.HttpContext.Request.Form["fName"];
        own.email = controllerContext.HttpContext.Request.Form["fEmail"];
        own.PhoneNo = controllerContext.HttpContext.Request.Form["fPhoneNo"];
        own.country = controllerContext.HttpContext.Request.Form["Country"];
        own.address = controllerContext.HttpContext.Request.Form["Adres"];
        own.office = controllerContext.HttpContext.Request.Form["Off"];
        own.officeEmail = controllerContext.HttpContext.Request.Form["OffEmail"];
        own.officeNo = controllerContext.HttpContext.Request.Form["OffNo"];
        own.OwnershipType = controllerContext.HttpContext.Request.Form["OwnershipType"];
        own.ProductId = controllerContext.HttpContext.Request.Form["ProductId"];

        return own;
    }
}

}

错误

"'CustomModelBinder' does not implement interface member 'System.Web.Mvc.IModelBinder.BindModel(System.Web.Mvc.ControllerContext, System.Web.Mvc.ModelBindingContext)'

Answer 1

您正在使用的 IModelBinder 来自 System.Web.ModelBinding 命名空间。该接口(interface)的 BindModel 方法返回 bool 类型的值。

bool BindModel(
    ModelBindingExecutionContext modelBindingExecutionContext,
    ModelBindingContext bindingContext
)

如果你想使用返回对象的 BindModel 方法，那么你需要从 System.Web.Mvc 命名空间实现接口(interface)。

Object BindModel(
    ControllerContext controllerContext,
    ModelBindingContext bindingContext
)

您可以在实现此 IModelBinder 接口(interface)时通过提供完整的命名空间来检查它。喜欢

public class CustomModelBinder : System.Web.Mvc.IModelBinder
{
   public object BindModel(ControllerContext controllerContext, 
               ModelBindingContext bindingContext)
 {
    Ownership own = new Ownership();
    own.name = controllerContext.HttpContext.Request.Form["fName"];
    own.email = controllerContext.HttpContext.Request.Form["fEmail"];
    own.PhoneNo = controllerContext.HttpContext.Request.Form["fPhoneNo"];
    own.country = controllerContext.HttpContext.Request.Form["Country"];
    own.address = controllerContext.HttpContext.Request.Form["Adres"];
    own.office = controllerContext.HttpContext.Request.Form["Off"];
    own.officeEmail = controllerContext.HttpContext.Request.Form["OffEmail"];
    own.officeNo = controllerContext.HttpContext.Request.Form["OffNo"];
    own.OwnershipType = controllerContext.HttpContext.Request.Form["OwnershipType"];
    own.ProductId = controllerContext.HttpContext.Request.Form["ProductId"];

    return own;
}
}