Question

当我动态创建这样的单选按钮列表时，我有错误Property selecteditem is readonly：

Dim DDL As New DropDownList
Dim RBL As New RadioButtonList
Dim CBL As New CheckBoxList

DDL.ID = "DDL_" & SelectedCategory & "_" & SubAssy & "_" & ProductType
RBL.ID = "RBL_" & SelectedCategory & "_" & SubAssy & "_" & ProductType
CBL.ID = "CBL_" & SelectedCategory & "_" & SubAssy & "_" & ProductType

If ProductType = "General" Or (CategorySelected = "KC 2.1 (retractor without webbing)" And ProductType = "KC2.1" Or ProductType = "Webbing") Or
(CategorySelected = "KC 2.1 Seatbelt)" And ProductType = "KC2.1") Then

    DDL.Visible = False
    RBL.Visible = False
    CBL.Visible = False

    DDL.SelectedItem = True
    RBL.SelectedItem = True
    CBL.SelectedItem = True

End If

在这3行代码中：

DDL.SelectedItem = True
RBL.SelectedItem = True
CBL.SelectedItem = True

显示错误。我必须使用RadioButtonList或DropDownList或CheckBoxList创建一个用户选择项目的表，但我希望某个按钮具有预先选择的值并且不显示。当我阅读所有选中的按钮时，我希望这样。

Answer 1

您的问题是，在尝试选择control之前，您无法看到true。

将这些更改为DDL.Visible = False RBL.Visible = False CBL.Visible = False：

radio button

最重要的是，当时在control内只能选择一个DDL.SelectedItem = True RBL.SelectedItem = True CBL.SelectedItem = True，所以这有点毫无意义：

Dim DDL As New DropDownList

更新

Dim RBL As New RadioButtonList

以上无法检查

controls

我相信首先会被检查

我刚刚意识到你试图创建这些controls。在实际add之前，您无法检查，取消选中public void MainHistory{ @SerializedName("Status") private String status; @SerializedName("History") private List<ChildHistory> history; //getters and setters }。这link可以帮助您

属性selecteditem只读取RadioButtonList

1 个答案: