C#: Refresh image on page load

[Eleven]

Hi everybody,

I'm trying to load a different logo depending on who's logged in but the code doesn't seem to be working, well, it only works after i've rebooted my PC. Even when I log out it doesn't show the image its supposed to show for an un-authenticated user.
I'm guessing its something to do with refreshing the page.. but even when I manually refresh the page it doesn't work.

Hope someone can help me asap, i've spent too much time on this already.

Thanks

protected void Page_Load(object sender, EventArgs e)
  {
 
    if (!Page.User.Identity.IsAuthenticated)
      BankLogoImage.ImageUrl = SmartecLogoImage.ImageUrl;
 
      //Showing logged in user's bank logo
      if (Global.LoggedInUser.FkBanksID.Value == 1)
          BankLogoImage.ImageUrl = "~/Images/ABSACashProtector.jpg?";
      else
          if (Global.LoggedInUser.FkBanksID.Value == 2)
              BankLogoImage.ImageUrl = "~/Images/NedBankLogo.jpg?";
      else
          if (Global.LoggedInUser.FkBanksID.Value == 3)
              BankLogoImage.ImageUrl = "~/Images/SmartecLogo.jpg?";
 
 
 
 
  }
 

[Waazzzii]

BankLogoImage.ImageUrl = SmartecLogoImage.ImageUrl;

When you specify the asp Image tag you need to state the attribute 'ImageUrl=""' otherwise server side will not recognise it as being defined- this is most likely why you cannot change the value of it from the server. If you are using a regular html tag with the 'src' attribute then this will fail...

Can you show your html code?

[Plater]

Is your page being cached? What if you change the settings for that page to be not cached?

[Eleven]

BankLogoImage.ImageUrl = SmartecLogoImage.ImageUrl;

When you specify the asp Image tag you need to state the attribute 'ImageUrl=""' otherwise server side will not recognise it as being defined- this is most likely why you cannot change the value of it from the server. If you are using a regular html tag with the 'src' attribute then this will fail...

Can you show your html code?

Here's my HTML Code, i did specify the ImageUrl attribute

<table style="width: 100%" border="0" cellpadding="0" cellspacing="0">
                    <tr>
                        <td align="left" style="height: 50px; padding-left: 4px; border-bottom: #cccccc 2pt dotted;">
                            <asp:Image ID="SmartecLogoImage" runat="server" Height="30px" ImageUrl="~/Images/SmartecLogo.PNG"
                                Width="200px" /></td>
                        <td align="center" style="height: 50px; border-bottom: #cccccc 2pt dotted;">
                            <asp:Label runat="Server" ID="PageTitleLable" Font-Bold="True" CssClass="PageHeader"></asp:Label>
                        </td>
                        <td align="right" style="height: 50px; padding-right: 4px; border-bottom: #cccccc 2pt dotted;">
                            <asp:Image ID="BankLogoImage" runat="server" Height="30px" ImageUrl="~/Images/ABSACashProtector.PNG"
                                Width="200px" ImageAlign="Right" /></td>
                    </tr>
                    <tr>
                        <td align="left">
                            <asp:LoginName ID="LoginName1" runat="server" Font-Bold="False" FormatString="Welcome back <b>{0}</b>"
                                CssClass="LoginUser" />
                        </td>
                        <td align="right">
                            &nbsp;</td>
                        <td align="right">
                        </td>
                    </tr>
                </table>
 

[Eleven]

Is your page being cached? What if you change the settings for that page to be not cached?

Plater, could you please explain how i'd go about making the page not chached? I don't know much about that.

Thanks!

[Plater]

If you can (either in front end code or the backend code in the page_load), add the datetime number to the end of the request, sorta like this:

"/Images/SmartecLogo.PNG?t="+DateTime.Now.Ticks.ToString();


This frequently "tricks" browsers into thinking it is requesting a different page since the query string is different, although it is still requesting the same file.

[Eleven]

If you can (either in front end code or the backend code in the page_load), add the datetime number to the end of the request, sorta like this:

"/Images/SmartecLogo.PNG?t="+DateTime.Now.Ticks.ToString();


This frequently "tricks" browsers into thinking it is requesting a different page since the query string is different, although it is still requesting the same file.

Thank you, i'll try it out.