C#Razor页面BindProperty属性不起作用

时间:2019-05-13 07:53:16

标签: c# asp.net-core razor razor-pages

我从我的第一个Razor页面开始,并在一些示例之后,[BindProperty]属性不起作用... 我正在使用MongoDB,所以我不在项目中使用EntityFramework。

这是我的Model课:

public class Student : BaseModel
{
    public string FirstName;
    public string LastName;
}

[Serializable]
public abstract class BaseModel
{
    [JsonProperty(Order = -2)] // appear first
    [BsonRepresentation(BsonType.ObjectId)]
    public virtual string Id { get; set; }
    [DataType(DataType.DateTime)]
    [BsonDateTimeOptions(Kind = DateTimeKind.Local)]
    public DateTime CreatedDate;
}

这是我的New.cshtml.cs代码:

public class NewModel : PageModel
{
    readonly IStudentsCollection studentsCollection;
    [BindProperty]
    public Student Student { get; set; }


    public NewModel(IStudentsCollection studentsCollection)
    {
        this.studentsCollection = studentsCollection;
    }

    public async Task<IActionResult> OnPostAsync()
    {
        await studentsCollection.InsertAsync(Student);
        return RedirectToPage("Index");
    }
}

最后,这是我的New.cshtml代码:

<div class="row">
    <div class="col-md-4">
        <form method="post">
            <h4>Add New Student</h4>
            <hr />
            <div asp-validation-summary="All" class="text-danger"></div>
            <div class="form-group">
                <label asp-for="Student.FirstName"></label>
                <input asp-for="Student.FirstName" class="form-control" />
                <span asp-validation-for="Student.FirstName" class="text-danger"></span>
            </div>
            <div class="form-group">
                <label asp-for="Student.LastName"></label>
                <input asp-for="Student.LastName" class="form-control" />
                <span asp-validation-for="Student.LastName" class="text-danger"></span>
            </div>
            <button type="submit" class="btn btn-info">Save</button>
        </form>
    </div>
</div>

点击“保存”按钮后,我进入OnPostAsync方法,但是Student对象具有所有null值...

我在这里想念什么?

1 个答案:

答案 0 :(得分:1)

您需要为您的媒体资源提供set访问者:

public string FirstName { get; set; }
public string LastName { get; set; }