Set background color : The Official Microsoft ASP.NET Forums

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Ollza

Member

572 Points

304 Posts

Set background color

Nov 28, 2011 11:26 AM|LINK

Hi,

I have mad a simple count down with a timer and a postbacktrigger. In tick event i have a switch case and in the end i want to set the whole page black but i cant get it to work. Code:

aspx and .cs:

<body id="bodytag" runat="server">
    <form id="form1" runat="server" >
    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>
    <asp:Timer ID="tTicker" runat="server" Interval="1000" OnTick="tTicker_Tick">
    </asp:Timer>
    
    <asp:UpdatePanel ID="upTimer" UpdateMode="Conditional" runat="server">
    <Triggers>
    <asp:AsyncPostBackTrigger ControlID="tTicker" EventName="Tick" />
    </Triggers>
    <ContentTemplate>
        <asp:Image ID="imgNumber" runat="server" ImageUrl="~/img/0.JPG" Height="200px" Width="200px" />
    </ContentTemplate>
    </asp:UpdatePanel>
    </div>
    </form>
</body>


 protected void tTicker_Tick(object sender, EventArgs e)
    {
        if (imgNumber.ImageUrl != null)
        {
            string key = imgNumber.ImageUrl.ToString();
            
            switch (key)
            {
                case "~/img/0.JPG":
                    imgNumber.ImageUrl = "~/img/1.JPG";
                    break;
                case "~/img/1.JPG":
                    imgNumber.ImageUrl = "~/img/2.JPG";
                    break;
                case "~/img/2.JPG":
                    imgNumber.ImageUrl = "~/img/3.JPG";
                    break;
                case "~/img/3.JPG":

                    form1.Attributes.CssStyle.Add("BACKGROUND-COLOR", "#000000");
                    bodytag.Attributes.CssStyle.Add("BACKGROUND-COLOR", "#000000");
                    break;
               
            }
            
        }
}

Edited by ollza on Nov 28, 2011 11:26 AM
Edited by ollza on Nov 28, 2011 11:27 AM

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MetalAsp.Net

All-Star

112752 Points

18373 Posts

Moderator

Re: Set background color

Nov 28, 2011 12:06 PM|LINK

You've set the timer as an async trigger. So the only thing that will get updated is the content of the updatepanel. To confirm that, remove the timer as a async trigger and test.

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