如何将选定值从下拉列表中从视图传递到控制器 [英] How do I pass the selected value from a dropdownlist from view to the controller
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问题描述
在我的视图中有一个下拉列表,其他一些控件和一个用于保存数据的输入按钮。
开保存我有ActionReult Save()
需要我在下拉列表中选择的值。
如何在控制器上获取下拉列表的选定值Actionresult Save()
浏览:
------
var docTypes = Model.DocumentTypes.Select(x = > new SelectListItem {Text = x.Name,Value = x.Id.ToString()})。AsEnumerable();
@ Html.DropDownList( SelectedDocumentType,docTypes, - select - , new {@class = ddSelect})
型号:
-----
public IEnumerable< doctypeentity> DocumentTypes { get ; set ; }
控制器:
-----------
[HttpParamAction]
[HttpPost]
[ValidateInput( false )]
public ActionResult Save()
{
int DocumentType = ???? // 我必须在此处指定下拉列表的选定值
}
解决方案
如果使用名为SelectedDocumentType的@ Html.DropDownList,请使用FormCollection,因为它将带来名称的所有值,即公共ActionResult Save(FormCollection fc),然后是fc [SelectedDocumentType ]应该给你价值。
另外,如果你有一个具有属性Document类型的Model,那么我更喜欢使用@ Html.DropdownListFor(Model.DocumentType)。更好的方法。
如果它有帮助,请喜欢。感谢。
Hi,
have a dropdown in my view, couple of other controls and a input button to save the data.
On saving I have ActionReult Save ()
which needs the value I selected in the dropdownlist.
How can I get the selected value of the dropdownlist on my controller Actionresult Save()
View:
------
var docTypes = Model.DocumentTypes.Select(x => new SelectListItem { Text = x.Name, Value = x.Id.ToString() }).AsEnumerable();
@Html.DropDownList("SelectedDocumentType", docTypes, "--select--", new { @class = "ddSelect" })
Model:
-----
public IEnumerable<doctypeentity> DocumentTypes { get; set; }
Controller:
-----------
[HttpParamAction]
[HttpPost]
[ValidateInput(false)]
public ActionResult Save()
{
int DocumentType = ????// I have to assign the selected value of the dropdownlist here
}
解决方案
If using @Html.DropDownList with a name "SelectedDocumentType", use FormCollection as it will bring all the values from view having name i.e. public ActionResult Save(FormCollection fc) and then fc["SelectedDocumentType"] should give you value.
Also, if you have a Model with property Document type, then I prefer using @Html.DropdownListFor(Model.DocumentType). Much better approach.
Please like if it helps. Thanks.
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