如何将唯一值与下拉列表选定值一起传递给操作方法 [英] How to pass a unique value along with dropdownlist selected value to action method

问题描述

我在webgrid中使用带有一些静态值的下拉列表。我想将一个唯一的ID和dropdownlist值传递给action方法。我怎样才能做到这一点？我使用下面的代码，但它无法正常工作。 @ item.MessageId是我想传递给操作方法的值以及下拉选择值。以及我如何在行动中获得这个价值？

 @ using（Html.BeginForm（ChangeMes​​sagePriority，Home，FormMethod .Post，new {id = @ item.MessageId}））
 {
 @ Html.DropDownList（ddlPR1，listItems，new {onchange =this.form.submit（）;}） 
} 

解决方案

使用隐藏字段



< pre lang =cs> @ using（Html.BeginForm（ ChangeMes​​sagePriority， Home，FormMethod.Post， new {id = @ item.MessageId}））
{
< input type = hidden value = myhiddenvalue / >
@Html.DropDownList（ ddlPR1，listItems， new {onchange = this.form.submit（）;} ）
}

如何填充该值取决于数据的来源。您也可以将其作为模型的一部分并使用Html.HiddenFor（m => m.MyHiddenValue）

I am using a dropdownlist with some static values in webgrid. and i want to pass a unique ID along with dropdownlist value to action method. How can i do this? I am using below code but its not working. @item.MessageId is the value i want to pass to an action method along with dropdown selected value. and how i can get that value in action?

@using (Html.BeginForm("ChangeMessagePriority", "Home", FormMethod.Post, new { id = @item.MessageId }))
{
  @Html.DropDownList("ddlPR1", listItems, new { onchange = "this.form.submit();" })
}

解决方案

Use a hidden field

@using (Html.BeginForm("ChangeMessagePriority", "Home", FormMethod.Post, new { id = @item.MessageId }))
 {
   <input type="hidden" value="myhiddenvalue" />
 @Html.DropDownList("ddlPR1", listItems, new { onchange = "this.form.submit();" })
 }

how that value is populated depends on where the data is coming from. You can also make it part of the model and use Html.HiddenFor(m => m.MyHiddenValue)

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