[英]DropdownList in ASP.NET MVC - value not posted
I have a form in ASP MVC (Razor) and in this form I have a Textboxes... and a <select>
and I want to transmit the selected option (value) of this select to the controller like the other information. 我在ASP MVC(Razor)中有一个表单,在此表单中,我有一个Textboxes ...和
<select>
,我想像其他信息一样将此选择的选定选项(值)传输到控制器。 The textboxes are transmitted correctly to the controller and it's in the database. 文本框已正确传输到控制器,并且在数据库中。
I have a field in the database called NumberParticipant and I want to transmit i tin the database thanks to my Create controller : 我在数据库中有一个名为NumberParticipant的字段,由于我的Create控制器,我想传输该数据库:
My code : 我的代码:
@using (Html.BeginForm())
{
<div class="form-group">
@Html.LabelFor(model => model.LocalNumber, new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.LocalNumber, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.LocalNumber)
</div>
</div>
<div class="col-md-10">
<select class="form-control" id="numberParticipant">
<option value=""></option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
</select>
</div>
<input type="submit" value="Create" class="btn btn-default" />
}
Using the MVC DropDownList helper would save you from writing out all the html. 使用MVC DropDownList帮助器可以避免编写所有html。 Here's an example that sets the option values in the view.
这是一个在视图中设置选项值的示例。
<div class="col-md-10">
@Html.DropDownListFor(model => model.NumberParticipant,
new SelectList(new []
{ new {value="",text=""},
new {value="2",text="2"},
new {value="3",text="3"},
new {value="4",text="4"},
new {value="5",text="5"}
},"value","text"), new { htmlAttributes = new { @class = "form-control" }})
</div>
A best practice would be to add a property of type SelectList to your model class and set the possible options there. 最佳实践是在模型类中添加SelectList类型的属性,并在那里设置可能的选项。 You could then reference the new property in the helper like this:
然后,您可以像这样在助手中引用新属性:
<div class="col-md-10">
@Html.DropDownListFor(model => model.NumberParticipant,
Model.MySelectList, new { htmlAttributes = new { @class = "form-control" }})
</div>
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