asked on 3/19/2009

Calling a javascript function from server side, using AJAX timer

Hello,

I am developing a ASP.NET ajax application.
I am using a timer:

<asp:Timer ID="Timer1" runat="server" OnTick="Timer_Tick" Interval="5000" />

The only thing I want to do is to call a javascript function on every tick of the timer:

protected void Timer_Tick(object sender, EventArgs e)
{
ClientScript.RegisterClientScriptBlock(this.GetType(), "blink", "<script>blinkit('2');</script>");
}

This doesn't work.
The javascript function is being called only if I put the 'RegisterClientScriptBlock' in the Page_Load.

How can I call the javascript every couple of seconds?

Thank you

AJAX ASP.NET

Last Comment

Relegence

3/19/2009

carlnorrbom

3/19/2009

Hi,

Don't know about the rest of your code but if you try using:

protected void Timer_Tick(object sender, EventArgs e)
{
ClientScript.RegisterStartupScript(this.GetType(), "blink", "blinkit('2');", true);
}

it should work depending if you are making a full postback or not (which is needed for this way to work). If You are controlling the contents of an update panel with the timer I guess you need to add the timer as a postback trigger (not async) for the update panel.

/Carl.

Relegence

3/19/2009

ASKER

I am afraid it didn't help.

Below is my code

<form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server" />
    <div>
        <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Always">
            <ContentTemplate>
                <asp:Timer ID="Timer1" runat="server" OnTick="Timer_Tick" Interval="5000" />                
            </ContentTemplate>
        </asp:UpdatePanel>  
        <asp:Label ID="lbl" runat="server"></asp:Label>
        <label id="lblHTML">test</label>
    </div>
    </form>

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ASKER CERTIFIED SOLUTION

carlnorrbom

3/19/2009

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Relegence

3/19/2009

ASKER

Thanks a lot. it works perfectly!!