@Html.DropDownListFor 如何设置默认值 [英] @Html.DropDownListFor how to set default value

问题描述

@Html.DropDownListFor(model => model.Status, new List<SelectListItem> 
       { new SelectListItem{Text="Active", Value="True"},
         new SelectListItem{Text="Deactive", Value="False"}})

鉴于我正在使用这个 drop dowenlist 编码.我运行我的应用程序默认停用值显示在下拉列表框中.我想显示默认 Active

In view I am using this drop dowenlist coding. I run my application default deactive value is display in dropdown list box. I want display default Active

推荐答案

像这样:

@Html.DropDownListFor(model => model.Status, new List<SelectListItem> 
       { new SelectListItem{Text="Active", Value="True"},
         new SelectListItem{Text="Deactive", Value="False"}},"Select One")

如果您希望默认选择 Active，则使用 SelectListItem 的 Selected 属性:

If you want Active to be selected by default then use Selected property of SelectListItem:

@Html.DropDownListFor(model => model.Status, new List<SelectListItem> 
           { new SelectListItem{Text="Active", Value="True",Selected=true},
             new SelectListItem{Text="Deactive", Value="False"}},"Select One")

如果使用 SelectList，则必须使用 此重载 并指定要设置选中的 SelectListItem Value 属性:

If using SelectList, then you have to use this overload and specify SelectListItem Value property which you want to set selected:

@Html.DropDownListFor(model => model.title, 
                     new SelectList(new List<SelectListItem>
  {
      new SelectListItem { Text = "Active" , Value = "True"},
      new SelectListItem { Text = "InActive", Value = "False" }
  },
    "Value", // property to be set as Value of dropdown item
    "Text",  // property to be used as text of dropdown item
    "True"), // value that should be set selected of dropdown
     new { @class = "form-control" })

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