创建自定义 Web 控件

Posted 2023-03-31

【中文标题】创建自定义 Web 控件

【英文标题】：Creating Custom Web Control

【发布时间】：2018-03-06 16:08:11

【问题描述】：

我正在尝试，但我对 Web 窗体的经验有限。如何访问在打开和关闭标签之间传递的文本？控件应该像这样工作。

用法

<asp:YesOrNoQuestion>Are you above the age of 18 ? </asp:YerOrNoQuestion>

控制

<tr id="trQ6CA" runat="server" visible="false">
    <td>
        <asp:Label ForeColor="Black" ID="QuestionLabel" runat="server">
          // Question Goes Here
        </asp:Label>
    </td>
    <td>
        <asp:RadioButtonList ID="buttonCollection" runat="server" RepeatDirection="Horizontal">
            <asp:ListItem Value="Y">Yes</asp:ListItem>
            <asp:ListItem Value="N">No</asp:ListItem>
        </asp:RadioButtonList>
    </td>
    <td>
        <asp:RequiredFieldValidator ControlToValidate="buttonCollection" ID="Requiredfieldvalidator" InitialValue="" runat="server" Text="*" ValidationGroup="vgApplication">
            *
        </asp:RequiredFieldValidator>
    </td>
</tr>

我要替换的代码

<tr id="trQ6CA" runat="server" visible="false">
    <td valign="top" align="left">
        <asp:Label ID="Label10" runat="server" ForeColor="Black">
            <b>DOES THE PROPOSED INSURED:</b> 
            &nbsp;Have a comprehensive health benefits from an insurance policy, an HMO plan, or employer health benefit plan? <br />
            If No, persons without such comprehensive coverage are not eligible for this insurance policy.
        </asp:Label>
    </td>
    <td valign="top">
        <asp:RadioButtonList ID="rbtQ6S1" runat="server" RepeatDirection="Horizontal">
            <asp:ListItem Value="Y">Yes</asp:ListItem>
            <asp:ListItem Value="N">No</asp:ListItem>
        </asp:RadioButtonList>
    </td>
    <td valign="top">
        <asp:RequiredFieldValidator ID="Requiredfieldvalidator65" runat="server" Text="*" ControlToValidate="rbtQ6S1" InitialValue="" ValidationGroup="vgApplication">
            *
        </asp:RequiredFieldValidator>
    </td>
</tr>

【问题讨论】：

你也可以看看复合控件。我不喜欢这个解决方案。仅对这三个控件来说是非常不可读和难以管理的。最好的解决方案是使用用户控件 (ascx)

【参考方案1】：

注册控件时可以选择前缀和标签： https://msdn.microsoft.com/en-us/library/sbz9etab.aspx