如何动态preSELECT项目在ASP.NET MVC一个html.DropDownlist [英] How do I Dynamically Preselect an item in a html.DropDownlist in ASP.NET MVC

问题描述

有没有办法，这是我可以preSELECT项目在页面加载时，或发送到服务器。

这就是我现在所拥有的。

 ＆LT;％= Html.DropDownList（dllMonths
    新的SelectList（新名单＆LT;串GT;（）{
       ，一，二月，三月，四五，六一，
       七五，八五，九五，十月，月，
       十二月}），
    新平变化{=this.form.submit（）; }）％GT;
 

解决方案

设置选择列表的SelectedValue属性，或者把它作为第二个参数的SelectList构造函数。

 ＆LT;％= Html.DropDownList（dllMonths
                           新的SelectList（新名单（）
                                          {，月，二月，三月，
                                            四五，六一，七一，八一，
                                            九·一，十月，11月。，
                                            十二月}，
                                          四五），
                           新平变化{=this.form.submit（）; }
                       ）％GT;
 

is there way thats i can preselect an item when the page loads or posts to the server..

this is what i have right now..

<%=Html.DropDownList("dllMonths", 
    new SelectList(new List<string>() {
       "", "January", "Feburary", "March", "April", "June", 
       "July", "August", "September", "October", "November", 
       "December"}), 
    new { onchange="this.form.submit();" })%>

解决方案

Set the SelectedValue property of the SelectList, or pass it as second parameter to SelectList constructor.

<% = Html.DropDownList ( "dllMonths", 
                           new SelectList ( new List ( ) 
                                          { "", "January", "Feburary", "March", 
                                            "April", "June", "July", "August", 
                                            "September", "October", "November", 
                                            "December" },
                                          "April" ), 
                           new { onchange = "this.form.submit();" } 
                       )%>

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