Changing the button click value from code behind.

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Hey there ,
After doing many searches in google I came to here hoping to find the answer
I want to change the value of onClick="to new value" in code behind
for example:
if in the source onClick="Button1_click"
I want to change it from the code behind to
onClick="btnclick"

I'm making a light game in my web-project and now stuck with this
thanks in advance.

Posted 13-Jun-11 22:20pm

weso_f

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RakeshMeena · Answer 1 · 2011-06-13T22:24:00

Solution 1

Detach the existing event handler:
button.Click -= Button1_click;
then assign the new event handler:
button.Click += btnclick;

If this is not working that means you are assigning the event handler in your markup. Remove that and do the assignment in code-behind maybe with a (IsPostBack) check, and then put the above piece of code. Try this and let me know.

Posted 13-Jun-11 22:24pm

RakeshMeena

Updated 13-Jun-11 22:39pm

v3

Comments

weso_f 14-Jun-11 4:49am

thanks for reply
but I'm trying and it's not changing ! here is my code


public partial class _Default : System.Web.UI.Page
{
 
    public void Page_Load(object sender, EventArgs e)
    {
 
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        Button1.Click -= Button1_Click;
        Button1.Click += btnclick;
    }
    protected void btnclick(object sender, EventArgs e)
    {
        Label1.Text = "worked";
    }
}

weso_f 14-Jun-11 4:55am

I removed the attribute from the source and assigned it in page load it's still the same no action occurs here is my nwe code:


public partial class _Default : System.Web.UI.Page
{ 

    public void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            Button1.Click += Button1_Click;
        }
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        Button1.Click -= Button1_Click;
        Button1.Click += btnclick;
    }
    protected void btnclick(object sender, EventArgs e)
    {
        Label1.Text = "ll";
    }
}
and here is it's source :
<code>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head  runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1"  runat="server">
    <div>
             
        <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
        <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click1" /></div>
    </form>
</body>
</html>

RakeshMeena 14-Jun-11 5:04am

If you look carefully your button's click event is bound to "Button1_Click1" in the source. Remove that and try!

weso_f 15-Jun-11 18:01pm

I found alternative and easier way that has the same aim to make my game
it's by changing the button text !
thanks alot

Savalia Manoj M · Answer 2 · 2011-06-13T22:59:00

Solution 3

Try to this

public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Button1.Click -= Button1_Click;
Button1.Click += btnclick;
}
protected void btnclick(object sender, EventArgs e)
{
Label1.Text = "worked";
}
}

Posted 13-Jun-11 22:59pm

Savalia Manoj M

Comments

weso_f 14-Jun-11 5:03am

but I need to change the value in the (Button1_Click) procedure not in the page_Load