如何使用MVC在选定的下拉列表中添加默认值 [英] How to add a default value in selected drop down list using MVC

问题描述

请帮我在下拉列表中添加默认值。这是填充下拉列表。

提前致谢。下面是我的单行代码。

Please help me to add a default value in drop down list. This is populated drop down list.
Thanks in advance. below is my single line code.

<pre>@Html.DropDownList("leaveCode", ViewBag.leaveCode as List<SelectListItem>,"Select", new { htmlAttributes = new { @class = "form-control" }, @id = "locationsel", @style = "width:150px;" })

在上面的行代码中我想添加一个名为some text的值，该值应显示在下拉列表中。



我尝试过：



请帮帮我。



谢谢

in above line code i want to add a value called "some text" that should be display in drop down list.

What I have tried:

Please help me out .

Thanks

推荐答案

是的。它是leaveCode的默认值。



in viewBag

Yes. It is default value of the leaveCode.

in viewBag

ViewBag.leaveCode = new SelectList(db.ApplyLeaveVMs, "alid", "leaveCode", applyLeaveVM.leaveCode);

以上是我的ViewBang



如果我这样做如下所示，它将通过错误。

above is my ViewBang

if I do like below it will through error.

ViewBag.leaveCode = new SelectList(db.ApplyLeaveVMs, "alid", "leaveCode","LOP", applyLeaveVM.leaveCode);

所以，请告诉我如何在ddl中添加默认值。

So, please let me know how I can add default value in ddl.

这篇关于如何使用MVC在选定的下拉列表中添加默认值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！