SelectList 导致我得到空值
SelectList is causing me to get null values
在我的 ASP.NET 核心项目中,由于 selectList,我的模型得到了空值。除了我使用 select 列表 select 编辑的下拉列表中的 selection 外,我的所有属性都在我的视图中显示为空。我正在尝试使用标签助手 asp-items 获取下拉列表 select。我想设置 HTML 表单中的所有数据并保存在名为“Student”的同一模型中
我的模型;
public class Student
{
public string Name { get; set; }
public string LastName { get; set; }
public string Email { get; set; }
public string Password { get; set; }
public string branch { get; set; }
}
我的控制器和我发送的线路 selectList;
public async Task<IActionResult> Signup(Student student) //properties of student come null except branch.
{
ViewBag.branches = new List<string>() { "Web Programlama", "Mobil Programlama", "Veri Bilimi", "Yapay Zeka/Makine Öğrenmesi", "Genel Tavsiye" };
return View();
}
和我的 HTML 行,我称之为 selectedList;
<select asp-for="student.branch" class="form-control" id="alan" asp-items="@(new SelectList(ViewBag.branches))"> //here is where ı stuck :(
<option disabled selected title="Alanınızı seçiniz">Alanınızı seçiniz</option>
</select>
首先,您需要在<select></select>
中添加name="branch"。然后,您需要add value to option
。
代码
<select asp-for="student.branch" class="form-control" id="alan" asp-items="@(new SelectList(ViewBag.branches))"> //here is where ı stuck :(
<option disabled selected title="Alanınızı seçiniz">Alanınızı seçiniz</option>
</select>
在html中是这样的,选项没有值:
这是一个工作演示:
查看:
<form method="post">
<select asp-for="student.branch" name="branch" class="form-control" id="alan">
//here is where ı stuck :(
<option disabled selected title="Alanınızı seçiniz">Alanınızı seçiniz</option>
@foreach (var branch in @ViewBag.branches)
{
<option value=@branch>@branch</option>
}
</select>
<button type="submit">submit</button>
</form>
结果:
在我的 ASP.NET 核心项目中,由于 selectList,我的模型得到了空值。除了我使用 select 列表 select 编辑的下拉列表中的 selection 外,我的所有属性都在我的视图中显示为空。我正在尝试使用标签助手 asp-items 获取下拉列表 select。我想设置 HTML 表单中的所有数据并保存在名为“Student”的同一模型中
我的模型;
public class Student
{
public string Name { get; set; }
public string LastName { get; set; }
public string Email { get; set; }
public string Password { get; set; }
public string branch { get; set; }
}
我的控制器和我发送的线路 selectList;
public async Task<IActionResult> Signup(Student student) //properties of student come null except branch.
{
ViewBag.branches = new List<string>() { "Web Programlama", "Mobil Programlama", "Veri Bilimi", "Yapay Zeka/Makine Öğrenmesi", "Genel Tavsiye" };
return View();
}
和我的 HTML 行,我称之为 selectedList;
<select asp-for="student.branch" class="form-control" id="alan" asp-items="@(new SelectList(ViewBag.branches))"> //here is where ı stuck :(
<option disabled selected title="Alanınızı seçiniz">Alanınızı seçiniz</option>
</select>
首先,您需要在<select></select>
中添加name="branch"。然后,您需要add value to option
。
代码
<select asp-for="student.branch" class="form-control" id="alan" asp-items="@(new SelectList(ViewBag.branches))"> //here is where ı stuck :(
<option disabled selected title="Alanınızı seçiniz">Alanınızı seçiniz</option>
</select>
在html中是这样的,选项没有值:
这是一个工作演示:
查看:
<form method="post">
<select asp-for="student.branch" name="branch" class="form-control" id="alan">
//here is where ı stuck :(
<option disabled selected title="Alanınızı seçiniz">Alanınızı seçiniz</option>
@foreach (var branch in @ViewBag.branches)
{
<option value=@branch>@branch</option>
}
</select>
<button type="submit">submit</button>
</form>
结果: