Question

我有一个asp：RadioButtonList，并希望以声明方式将值绑定到枚举。我尝试使用这种类型的语法：

value = <%# ((int)MyEnum.Value).ToString() %>"

我得到错误列表项不支持数据绑定。有什么想法吗？

Answer 1

基本上你不能完全按照自己的意愿行事。这是因为Asp：Listitem不包含Databinding事件。然而，RadioButtonList本身确实支持这一点。

所以这是我能找到你想要的最接近的。

这是HTML

<asp:RadioButtonList runat="server" ID="rbl" DataSource='<%# EnumValues %>' DataValueField='Value'  DataTextField='Key' />

以下是

背后的代码

 Public Enum values As Integer
    first = 1
    second = 2
    third = 3
    fourth = 4
    fifth = 5

End Enum

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    Page.DataBind()
End Sub

Public ReadOnly Property EnumValues() As System.Collections.Generic.Dictionary(Of String, String)
    Get


        Dim val As values

        Dim names As Array
        Dim values As Array


        Dim stuff As Dictionary(Of String, String) = New Dictionary(Of String, String)

        names = val.GetNames(val.GetType)
        values = val.GetValues(val.GetType)

        build the final results
        For i As Integer = 0 To names.Length - 1
            stuff.Add(names(i), values(i))
        Next

        Return stuff

    End Get
End Property

Answer 2

我遍历枚举而不是绑定。

Array itemValues = System.Enum.GetValues(typeof(Response));
Array itemNames = System.Enum.GetNames(typeof(Response));

for (int i = 0; i <= itemNames.Length - 1 ; i++) {
    ListItem item = new ListItem(itemNames(i), itemValues(i));
    radioButtonList1.Items.Add(item);
}

如何以声明方式将asp：listitem设置为枚举值？

2 个答案: