禁用回发<ASP:LinkButton>

Question

I have an ASP.NET linkbutton control on my form. I would like to use it for javascript on the client side and prevent it from posting back to the server. (I'd like to use the linkbutton control so I can skin it and disable it in some cases, so a straight up tag is not preferred).

How do I prevent it from posting back to the server?

Answer 1

ASPX code:

<asp:LinkButton ID="someID" runat="server" Text="clicky"></asp:LinkButton>

Code behind:

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {
        someID.Attributes.Add("onClick", "return false;");
    }
}

What renders as HTML is:

<a onclick="return false;" id="someID" href="javascript:__doPostBack('someID','')">clicky</a>

In this case, what happens is the onclick functionality becomes your validator. If it is false, the "href" link is not executed; however, if it is true the href will get executed. This eliminates your post back.

Answer 2

This may sound like an unhelpful answer ... But why are you using a LinkButton for something purely client-side? Use a standard HTML anchor tag and set its onclick action to your Javascript.

If you need the server to generate the text of that link, then use an asp:Label as the content between the anchor's start and end tags.

If you need to dynamically change the script behavior based on server-side code, consider asp:Literal as a technique.

But unless you're doing server-side activity from the Click event of the LinkButton, there just doesn't seem to be much point to using it here.

Answer 3

You can do it too

...LinkButton ID="BtnForgotPassword" runat="server" OnClientClick="ChangeText('1');...

And it stop the link button postback

Answer 4

只需设置 href="#"

<asp:LinkButton ID="myLink" runat="server" href="#">Click Me</asp:LinkButton>

Answer 5

Just been through this, the correct way to do it is to use:

1. OnClientClick
2. return false

as in the following example line of code:

<asp:LinkButton ID="lbtnNext" runat="server" OnClientClick="findAllOccurences(); return false;" />

Answer 6

I think you should investigate using a HyperLink control. It's a server-side control (so you can manipulate visibility and such from code), but it omits a regular ol' anchor tag and doesn't cause a postback.

Answer 7

在 C# 中，你会做这样的事情：

MyButton.Attributes.Add("onclick", "put your javascript here including... return false;");

Answer 8

Instead of implement the attribute:

public partial class _Default : System.Web.UI.Page{
 protected void Page_Load(object sender, EventArgs e)
 {
    someID.Attributes.Add("onClick", "return false;");
 }}

Use:

OnClientClick="return false;"

inside of asp:LinkButton tag

Answer 9

To avoid refresh of page, if the return false is not working with asp:LinkButton use

href="javascript: void;"

or

href="#"

along with OnClientClick="return false;"

<asp:LinkButton ID="linkPrint" runat="server" CausesValidation="False" href="javascript: void;"
        OnClientClick="javascript:self.print();return false;">Print</asp:LinkButton>

Above is code will call the browser print without refresh the page.

Answer 10

如果您想保留滚动位置，您可以做的其他事情是：

<asp:LinkButton runat="server" id="someId" href="javascript: void;" Text="Click Me" />

Answer 11

在 onclick 事件上调用 java 脚本函数。

Answer 12

Have you tried to use the OnClientClick ?

var myLinkButton = new LinkButton { Text = "Click Here", OnClientClick = "JavaScript: return false;" };

<asp:LinkButton ID="someID" runat="server" Text="clicky" OnClientClick="JavaScript: return false;"></asp:LinkButton>

Answer 13

In the jquery ready function you can do something like below -

var hrefcode = $('a[id*=linkbutton]').attr('href').split(':');
var onclickcode = "javascript: if`(Condition()) {" + hrefcode[1] + ";}";
$('a[id*=linkbutton]').attr('href', onclickcode);

Answer 14

No one seems to be doing it like this:

createEventLinkButton.Attributes.Add("onClick", " if (this.innerHTML == 'Please Wait') { return false; } else {  this.innerHTML='Please Wait'; }");

This seems to be the only way that works.

Answer 15

Why not use an empty ajax update panel and wire the linkbutton's click event to it? This way only the update panel will get updated, thus avoiding a postback and allowing you to run your javascript

Answer 16

You might also want to have the client-side function return false.

<asp:LinkButton runat="server" id="button" Text="Click Me" OnClick="myfunction();return false;" AutoPostBack="false" />

You might also consider:

<span runat="server" id="clickableSpan" onclick="myfunction();" class="clickable">Click Me</span>

I use the clickable class to set things like pointer, color, etc. so that its appearance is similar to an anchor tag, but I don't have to worry about it getting posted back or having to do the href="javascript:void(0);" trick.

Answer 17

使用 html 链接而不是 asp 链接，您可以在 html 链接之间使用标签进行服务器端控制