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  • MVC3 控件

    DorpDownListFor

    1. 直接在页面初始化

    @Html.DropDownListFor(model => model.Status, new SelectList(new string[] {"正常", "暂停销售"}))

    2.ViewBag传递

    @Html.DropDownListFor(model => model.CarCategoryID, (SelectList)ViewBag.CarCategory)

     

    DropDownList

    ASP.NET MVC DropDownList 用法

    一:Html.DropDownList 数据绑定并选定默认项

    1.建立IEnumerable<SelectListItem>并在其中指定默认选中项。

    List<SelectListItem> items = new List<SelectListItem>();

    items.Add(new SelectListItem { Text = "Kirin", Value = "29" }); 

    items.Add(new SelectListItem { Text = "Jade", Value = "28", Selected = true}); 

    items.Add(new SelectListItem { Text = "Yao", Value = "24"}); 

    this.ViewData["list"] = items;

    然后在View中<%=Html.DropDownList("list")%>即可绑定数据,且选中第二项。

    2.建立IEnumerable<SelectListItem>,在单独的ViewData项或view model的属性中指定默认选中项。

    使用SelectList。

    List<SelectListItem> items = new List<SelectListItem>(); 

    items.Add(new SelectListItem { Text = "Kirin", Value = "29" }); 

    items.Add(new SelectListItem { Text = "Jade", Value = "28"}); 

    items.Add(new SelectListItem { Text = "Yao", Value = "24"}); 

    this.ViewData["list"] = items; 

    this.ViewData["selected"] = 24;

    3.使用SelectList。

    var users = GetUsers(); 

    var selectList = new SelectList(users, "Age", "Name", "24"); 

    this.ViewData["list"] = selectList; 

    <%=Html.DropDownList("list")%>

    4.

    List<SelectListItem> lsSelItem = new List<SelectListItem>();
    SelectListItem sel = new SelectListItem();
    sel.Value = "http://www.csdn.net";
    sel.Text = "CSDN";
    lsSelItem.Add(sel);
    sel = new SelectListItem();
    sel.Value = "http://www.nopchina.com";
    sel.Text = "NopChina";
    lsSelItem.Add(sel);
    sel = new SelectListItem();
    sel.Value = "http://blog.csdn.net/csdbfans";
    sel.Text = "Csdbfans BLOG";
    lsSelItem.Add(sel);
    SelectList ddlSelData = new SelectList(lsSelItem.AsEnumerable(), "Value", "Text", "http://www.cnblogs.com");
    ViewData["ddlTestData"] = ddlSelData; 

    <%=Html.DropDownList("ddlTest",ViewData["ddlTestData"] as SelectList) %>

     

     

    Child actions are not allowed to perform redirect actions.

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  • 原文地址:https://www.cnblogs.com/guaniu/p/2332257.html
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