Recently I was working on AdRotator controll in Asp.Net 2.0, at one stage while adding Ads.xml file.
I notice following error:
Error:
The AdRotator adRtrCtrl/adRotator1 could not find the AdvertisementFile or the file is invalid.
Possible causes:
Check XML file if it is in well format. Check <NavigateUrl> tag, if it is of the form http://www.csharpcorner.com/adv=Y&ID=123 .
The ampersand & is a reserved character in XML so you have to use &. If the nature of your XML file is something of the form as listed below.
<Advertisements>
<Adv>
<ImageUrl>Images/1.gif</ImageUrl>
<NavigateUrl>http://www.c-sharpcorner.com</NavigateUrl>
<Alt>Csharp code</Alt>
<Caption>Csharp Site</Caption>
</Adv>
</Advertisements>
If the first element in above file is other than <Ad> then also it gives error, it has to have very first child element as <Ad>, this is what I have observed with the code.
So it takes form like.
<Advertisements>
<Ad>
<ImageUrl>Images/1.gif</ImageUrl>
<NavigateUrl>http://www.c-sharpcorner.com</NavigateUrl>
<Alt>Csharp code</Alt>
<Caption>Csharp Site</Caption>
</Ad>
</Advertisements>
Code for Default.aspx:
<%@ Page Language="vb" AutoEventWireup="true" CodeFile="Default.aspx.vb" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div style="text-align: left">
<table>
<tr>
<td style="width: 259px">
<asp:Label ID="Label1" runat="server" Font-Names="Verdana" Font-Size="Smaller" Text="AdRotator Component randomly picks up ad banners from XML file and clicking on banner takes to the specified URL" Width="301px">
</asp:Label>
</td>
<td style="width: 496px">
<asp:AdRotator ID="adRtrCtrl" Target="_self" runat="Server" />
</td>
</tr>
</table>
</div>
</form>
</body>
</html>
Code for Ads.xml file:
<Advertisements>
<Ad>
<ImageUrl>Images/1.gif</ImageUrl>
<NavigateUrl>http://www.c-sharpcorner.com</NavigateUrl>
<Alt>Csharp code</Alt>
<Caption>Csharp Site</Caption>
</Ad>
<Ad>
<ImageUrl>Images/1.gif</ImageUrl>
<NavigateUrl>http://www.vbdotnetheaven.com</NavigateUrl>
<Alt>VB.Net</Alt>
<Caption>Visual Basic</Caption>
</Ad>
<Ad>
<ImageUrl>Images/3.gif</ImageUrl>
<NavigateUrl>http://www.c-sharpcorner.com</NavigateUrl>
<Alt>Csharp code</Alt>
<Caption>Csharp Site</Caption>
</Ad>
<Ad>
<ImageUrl>Images/4.gif</ImageUrl>
<NavigateUrl>http://www.mindcracker.com</NavigateUrl>
<Alt>.Net Professional Job Site</Alt>
<Caption>VS.Net</Caption>
</Ad>
</Advertisements>
Note: I have tested the code 5-6 times with above error.
NOTE: THIS ARTICLE IS CONVERTED FROM C# TO VB.NET USING A CONVERSION TOOL. ORIGINAL ARTICLE CAN BE FOUND ON C# Corner (http://www.c-sharpcorner.com/).