Question

我试图在用户点击它之后更改我的超链接的文本。这是超链接：

   <asp:hyperlink id="OpenClose" runat="server" onclick="OpenClose_Click" AutoPostBack="true">Close</asp:hyperlink>

这是我背后的代码：

     protected void Page_Load(object sender, EventArgs e)
{
    OpenClose.Attributes.Add("onclick", "OpenClose_Click");
}
protected void OpenClose_Click(object sender, EventArgs e)
{
    if (OpenClose.Text == "Close")
        OpenClose.Text = "Open";
    else
        OpenClose.Text = "Close";
}

问题是它似乎没有看到OpenClose_Click函数。我不知道为什么。有没有其他方法可以做到这一点，还是我错过了什么？

修改

这是整个aspx代码

   <%@ Page Title="" Language="C#" MasterPageFile="../MasterPageLite.master"                  AutoEventWireup="true" CodeFile="testPageLoad2.aspx.cs" Inherits="BuilderPages_testPageLoad2" %>

    <%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>


 <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" Runat="Server">
<div class="left_side">
<form id="form1" runat="server">

 This is the second test page I am making. Practice collapse and expand panels!

<div class="msg_list">
<h3 class="msg_head">Header-1</h3>
<div class="msg_body">
Collapse this panel!!
<asp:button runat="server" text="Can you see me?" />
 </div>
<h3 class="msg_head">Header-2</h3>
<div class="msg_body">
Congratulations you opened the panel!!
</div>
<h3 class="msg_head">Header-3</h3>
<div class="msg_body">
The third panel has been opened!!
</div>
</div>

</form>
</div>

<div class="right_side">
<div class="lBorder">
<asp:Panel ID="OpenClosePanel" runat="server"></asp:Panel>
<asp:HyperLink id="OpenClose" runat="server" AutoPostBack="true" style="cursor:pointer; text-decoration:underline;">Show/Hide</asp:HyperLink>

 </div>

 <div class="rscontent">
 <p>
 Lorem ipsum... 
 </p>
 <p>
 Nulla... 
 </p>
 <p>
 Vivamus... 
 </p>
 <p>
 Phasellus... 
 </p>
 <p>
 Aenean... 
 </p>
 </div>

 </div>
 </asp:Content>

Answer 1

您应该使用LinkButton而不是HyperLink控件，如下所示：

Markup:
<asp:LinkButton id="OpenClose" runat="server" OnClick="OpenClose_Click" AutoPostBack="true" Text="Close"></asp:LinkButton>

Code-Behind:
protected void OpenClose_Click(object sender, EventArgs e)
{
    if (OpenClose.Text == "Close")
    {
        OpenClose.Text = "Open";
    }
    else
    {
        OpenClose.Text = "Close";
    }
}

LinkButton派生自Button类，因此它具有与按钮类似的事件，这是您想要的效果，但它呈现为超链接。

Answer 2

<asp:hyperlink ...不是有效的控件类型，因为.NET区分大小写。尝试将其更改为：

<asp:HyperLink ...

我还会删除页面加载事件中的代码。

点击后在asp.net中更改超链接的文本？

2 个答案: