ASP.NET MVC Html.Dropdown - 设置默认值

2011-04-07 72 views 0 likes

昨天我提出以下问题Html.Dropdown - get the the value of each option to be the same as the text?时，我发现这是回答下面的帖子What HTML helper do I use to create a simple dropdownlist that doesn't take in any variables? 现在这一切都很好但是，我怎么会选择一个默认值（如每月），这里是我的代码...ASP.NET MVC Html.Dropdown - 设置默认值

<%: Html.DropDownList("day", new SelectList(
    new Dictionary<string,string> { { "Weekly", "Weekly" }, { "Monthly", "Monthly" }, { "Quarterly", "Quarterly" }, { "Annually", "Annually" } }, 
    "Key", "Value")) 
%>

任何帮助，因为我还没有找到一个例子来说明这个简单的要求，将不胜感激，也许我应该对MVC购买一本书吗？

来源

2011-04-07 Mike Sav

回答

使用this过载

public SelectList(IEnumerable items, string dataValueField, string dataTextField, object selectedValue);

最后一个参数被选择的值。您可以将您的方法重写为

<%: Html.DropDownList("day", new 
SelectList(
    new Dictionary<string,string> { { "Weekly", "Weekly" }, { "Monthly", 
"Monthly" }, { "Quarterly", 
"Quarterly" }, { "Annually", 
"Annually" } }, 
    "Key", "Value", "Monthly")) %>

来源

2011-04-07 11:14:39 archil

ASP.NET MVC Html.Dropdown - 设置默认值

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