asp.net setting onclick of input button dynamically

Question

I have some dynamic buttons that look like this:

<input type="button" name="button" id="button" value="Click me"
    onclick="window.open('somelink');" />

I need to be able to change 'somelink' from the code behind.

How is that done? I know Request.Form["button"] gets the button but how to set the onlick property?

Answer 1

add runat="server" and you can access that link from code behind

<input runat="server" type="button" name="button" id="button" value="Click me"
    onclick="window.open('somelink');" />

and if you want to change the onclick attribute then you do this in code behind

button.Attributes.Add("onclick", "window.open('someOtherLink');")

Answer 2

Changing the click handler on a button should be done when the page loads, not when the form is submitted. Before you can access your button from C#, you need to add runat="server" . After that, you may access its properties:

HTML

<input runat="server" type="button" name="button" id="button" value="Click me"
    onclick="window.open('somelink');" />

C#

button.Attributes.Add("onclick", "window.open('[DynamicValueHere]');");

Answer 3

You can do this:

<asp:Button id="button" Text="Click me"  OnClick="window.open('somelink');" />

and
from code behind

button.Attributes.Add("onclick", "window.open('somelink');");

And you can add whatever you want in place of somelink .
that's it.

Answer 4

你为什么不像这样的window.open(<%=SomeUrl%>)在window.open内部传递<%=SomeUrl%>