c# - 使用javascript选中复选框启用文本框

Question

你好-当复选框被选中(启用)或未选中(禁用)时，我试图启用/禁用文本框。使用这段代码，一旦选中/取消选中复选框，我什么都没有发生。这是我所拥有的:

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="AssociationInfo.ascx.cs" Inherits="Administration.Modules.AssociationInfo" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>
     <script type="text/javascript" language="javascript">
        function enableTextBox() {
            window.onload = function () {
                var check = document.getElementById("chkAssociation");
                check.onchange = function () {
                    if (this.checked == true)
                        document.getElementById("txtAddress").disabled = false;
                    else
                        document.getElementById("txtAddress").disabled = true;
                };
            };
        }
    </script>

    <div>
    <h2>Association Info</h2>
    <br />

      <asp:CheckBox Checked="false" ID="chkAssociation" runat="server" />&nbsp;&nbsp;
       <asp:TextBox ID="txtAddress" Text="Test" runat="server" />
    </div>

代码在网页用户控制中。这可能是无法正常工作的原因吗？

感谢帮助

提前感谢大家的帮助，Laziale

Answer 1

请关闭 AutoPostBack。

<asp:CheckBox Checked="false" 
              OnChange="javascript:enableTextBox();" 
              ID="chkAssociation" 
              runat="server" />

编辑:试试这个代码，

<script type="text/javascript">
        window.onload = function() {
            var check = document.getElementById("<%=chkAssociation.ClientID %>");
            check.onchange = function() {
                if (this.checked == true)
                    document.getElementById("<%=txtAddress.ClientID %>").disabled = false;
                else
                    document.getElementById("<%=txtAddress.ClientID %>").disabled = true;
            };
        };
</script>        

<asp:CheckBox  Checked="false"   ID="chkAssociation" runat="server" />
<asp:TextBox ID="txtAddress" Enabled="false" Text="Test" runat="server" />