中继器"onclick"中的LinkBut​​ton将值分配给隐藏的输入 [英] LinkButton in a repeater 'onclick' assigns a value to a hidden input

问题描述

我在转发器内部有一个 asp:LinkBut​​ton ，该转发器具有一个 commandname ，其中包含一个 ID

I have a asp:LinkButton that's inside a repeater , that has a commandname containing an ID

 <table>                    
        <asp:Repeater ID = "rptr" runat = "server">
         <ItemTemplate>
             <tr>

                <td>
                     <asp:LinkButton ID = "lbtn" runat = "server" 
                        text = '<%#showData(Container.DataItem, "CommonName")%>' 
                        CommandName = '<%#showData(Container.DataItem, "ID")%>' 
                        CommandArgument = '<%#showData(Container.DataItem, "CommonName")%>'  />

                </td>
                    </tr>
         </ItemTemplate>
         </asp:Repeater>
    </table>

此外，我还有一个隐藏的 input 字段:(在转发器之外)

Also, I have a hidden input field: (outside of the repeater)

<input type = "hidden" id = "ID" runat = "server" />

该转发器填充了许多 asp:LinkBut​​ton ，每个转发器都有一个唯一的 ID ，该ID存储在 commandname 中.当单击 asp:LinkBut​​ton 时，我希望隐藏的输入值存储已单击的按钮的 commandname .

The repeater populates many asp:LinkButton, and each one has a unique ID that's stored in the commandname. when a asp:LinkButton is clicked, I want the hidden input value to store the commandname of the button that's been clicked.

我知道我必须在 onclick 事件中使用某种javascript函数.但是我无法弄清楚具体的方法.

I know that I have to use some sort of javascript function in the onclick event. But I am not able to figure out the specific way to do it.

提前谢谢.

推荐答案

您可以在转发器内部执行此操作:

You can do this inside the repeater:

<a href="javascript:fillHiddenField(<%# Container.ItemIndex %>, '<%# Eval("ID").ToString() %>')">Fill field</a>

然后是转发器外部的 HiddenField 和javascript函数来存储值.

And then a HiddenField and a javascript function outside the repeater to store the value.

<asp:HiddenField ID="HiddenField1" runat="server" />

<script type="text/javascript">
    function fillHiddenField(rowNumber, rowValue) {
        document.getElementById("<%= HiddenField1.ClientID %>").value = rowValue;
    }

现在，您不必进行回传即可在隐藏字段中获取值，但在由另一个元素完成的回传中仍然可用.

Now you won't have to do a postback to get the value in the hidden field but it is still available on postback done by another element.

P.S.最好不要将"ID"用作元素的ID，否则可能会造成混乱.以及=号前后的空格也是如此.

P.S. it's better not to use "ID" as the ID of elements, it could cause confusion. As are the spaces before and after the = signs.

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