Question

通过Pro ASP.NET MVC工作，我得到了以下代码片段，该代码片段出现在aspx（视图）页面中......

<%= Html.DropDownList ("WillAttend",new[] 
{
new SelectListItem { Text = "Yes, I'll be there",Value=bool.TrueString},
new SelectListItem { Text = "No, I can't come",Value=bool.FalseString}
},"Choose an option"); %>

有人可以帮助我将此转换为vb.net等效。

任何想法？

修改
更详细信息
这是整个代码段。不确定它会有所帮助，但在这里。

<body>
    <h1>RSVP</h1>

    <% using(Html.BeginForm()) { %>
        <p> Your name:  <%= Html.TextBox("Name") %></p>
        <p> Your email:  <%= Html.TextBox("Email") %></p>
        <p> Your phone:  <%= Html.TextBox("Phone") %></p>
        <p>
            Will you attend?
            <%= Html.DropDownList ("WillAttend",new[] 
                {
                new SelectListItem { Text = "Yes, I'll be there",Value=bool.TrueString},
                new SelectListItem { Text = "No, I can't come",Value=bool.FalseString}
                },"Choose an option") %>
        </p>
        <input type="submit" value="Submit RSVP" />
    <% } %>
</body>

任何帮助表示赞赏。我真的无法想出这个。

赛斯

Answer 1

你可以用一些相当冗长的VB.NET代码来完成这个：


     <%
        Dim lst As New List(Of SelectListItem)

        Dim item1 As New SelectListItem
        item1.Text = "Yes, I'll be there"
        item1.Value = Boolean.TrueString
        lst.Add(item1)

        Dim item2 As New SelectListItem
        item2.Text = "No, I can't come"
        item2.Value = Boolean.FalseString
        lst.Add(item2)
     %>
     <%=Html.DropDownList("WillAttend", lst, "Choose an option")%>

技巧是读取函数参数并提供适当的参数。有时我们习惯了更为神秘的语法，忘记了简单的变量声明和赋值。 DropDownList需要一个IEnumerable的SelectListItem作为第二个参数，这就是我们给它的东西。每个SelectListItem都应该提供它的值和文本字段。我不明白的是为什么SelectListItem的构造函数不提供这两个项目（加上可能是“选定的”布尔值。）

Answer 2

试试这个：

<%  Dim listItems As SelectListItem() = { _
             New SelectListItem() With {.Text = "Yes, I'll be there", .Value = Boolean.TrueString}, _
             New SelectListItem() With {.Text = "No, I can't come", .Value = Boolean.FalseString} _
             }

           Response.Write(Html.DropDownList("WillAttend", listItems, "Choose an option"))
%>

我的VB非常弱。我相信有人会有更好的答案。

Answer 3

不要过度复杂化：

<p>Will you attend?</p>
<select id="WillAttend">
    <option>Select an option</option>
    <option value="true">Yes, I'll be there</option>
    <option value="false">No, I can't come</option>
</select>

Answer 4

这是我认为你真正想要的。这与我认为的确切翻译非常接近......

        <%: Html.DropDownListFor(Function(x) x.WillAttend, New List(Of SelectListItem) From _
        {
            New SelectListItem With {.Text = "Yes, I'll be there", .Value = Boolean.TrueString},
            New SelectListItem With {.Text = "No, I can't come", .Value = Boolean.FalseString}
        }, "Choose an option")%>

Answer 5

@Using (Html.BeginForm()) _
        @<p>Your name: @Html.TextBoxFor(Function(x) x.Name)  </p> _
        @<p>Your email: @Html.TextBoxFor(Function(x) x.Email) </p> _
        @<p>Your phone: @Html.TextBoxFor(Function(x) x.Phone) </p> _
        @<p>
            Will you attend?
            @Html.DropDownListFor(Function(x) x.WillAttend, {New SelectListItem() With {.Text = "Yes, I'll be there", .Value = Boolean.TrueString}, _
                   New SelectListItem() With {.Text = "No, I can't come", .Value = Boolean.FalseString}}, _
               "Choose an option")       
        </p>
    End Using
        <input type="submit" value="Submit RSVP" />

如何将以下asp.net mvc c＃代码段呈现为vb.net代码

5 个答案: