如何解决如何在ASP.NET MVC中创建DropdownlistFor?
我正在为创建一个dropdownlist,但是不知何故它在View上没有抛出Viewdata异常,需要一些帮助来解决它。下面是我尝试实现它的逻辑,但我不幸地做到了。
// Model
// This is for course-list.
public class eNtsaDashboardViewModel
{
public string CourseName { get; set; }
public string CourseLicence { get; set; }
public string Course_LicenceName {get;set;}
}
// Controller
public static IEnumerable<eNtsaDashboardViewModel> eNtsaDashboardViews = new List<eNtsaDashboardViewModel>
{
new eNtsaDashboardViewModel
{
CourseLicence = "Private(Copyright)",Course_LicenceName = "Public Domain," +
"Creative Commons Licencese," +
"CC Attribution," +
"CC Attribution Share Alike," +
"CC Attribution Non Commercial," +
"CC Attribution Non Commercial Alike," +
"CC Attribution No Directives," +
"CC Attribution Non-Commercial No Directive"
}
};
//View
<div class="form-group">
<label for="CourseName" class="col-sm-3 col-form-label">CourseName</label>
<div class="col-sm-5">
@Html.EditorFor(model => model.CourseName,new { htmlAttributes = new { @class = "form-control",autofocus = "autofocus",placeholder = "CourseName" } })
<label for="Content Licence" class="col-sm-3 col-form-label">Content Licence</label>
@Html.DropDownListFor(model=>model.CourseLicence,ViewBag.Course_LicenceName as SelectList) // Throws exception here for noViewData.
</div>
</div>
解决方法
只需使用以下代码:
@Html.DropDownListFor(model => model.CourseLicence,new SelectList(ViewBag.Course_LicenceName,"CourseLicence","Course_LicenceName","--"),null,new { @class = "form-control" })
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