这里是援用
自定义类型属性
很多时候,咱们在 PageModel 中会搁置一个或多个自定义类型属性(又被称之为 Model)
Register 是一个自定义的类:
public class Register
{public string UserName { get; set;}
public string Password {get; set;}
}
这样的属性是怎么被绑定赋值的?
咱们须要给 FormData 一个用点(.)分隔非凡格局的 name:
比方,Regiter.UserName。这样 ASP.NET 进行 Model 绑定时,会主动将其解析为:Register 属性的 UserName 值。
点(.)的档次没有限度,比方 Register.User.Name 会被解析为:Register 属性中的 User 属性中的 Name 值。
@想一想 @:为什么应用 input TagHelper 时,生成的原生 HTML 代码 name 是这样的值?
留神:TagHelper 为咱们的 Model 绑定带来了便当,然而
TagHelper 自身 没有魔力,没有魔力,没有魔力!重要的事说三遍,^_^
肯定要了解:TagHelper 和 Model 绑定之间没有关系,没有 TagHelper 一样能够进行 Model 绑定
CheckboxList 汇合绑定
foreach 和 for
@for (int i = 0; i < Model.Options.Count; i++)
{
<label>@i <input type="checkbox" asp-for="Options[i]" /></label><br />
}在 PageModel 中申明:
public IList<bool> Options {get; set;}
留神,不要应用 foreach
@foreach (var item in Model.Options)
{
<label><input type="checkbox" asp-for="@item" /></label><br />
}
须要
public class Message
{public int Id { get; set;}
public bool Seleted {get; set;}
}Id 等不会主动传回 PageModel
@for (int i = 0; i < Model.Messages.Count; i++)
{
<label>@i <input type="checkbox" asp-for="Messages[i].Seleted" /></label>
<input asp-for="Messages[i].Id" type="hidden" />
<br />
}
绑定的 Model 不是 Entity
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