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Image Not Showing

P: n/a
Hi

I am using Borland Developer 2006, C# web application. Fairly new to
the .net platform and very new to repeaters.

I have 2 repeaters on a page, both of which are filled from a
database. The Links in the left hand column are created correctly and
displayed. The images/Links (hrefs) in the right hand column are the
problem. The links are displayed correctly but the images are not
displayed. The html is build dynamically. I have debugged the
application and copied the link that has been built. When I paste it
into the html and run it the images are displayed correctly. It is
driving me nuts.

The following is an example of the string that is built dynamically.

"<p><ASP:Image id="TheImage1" runat="server" height="80px"
width="140px" imageurl="Images/Image2.jpg" alternatetext = "Google Web
Page"></ASP:Image><br><a href="http://www.google.co.uk">Google</a></
p>"

In all cases the images exist.

Can anyone please help ?

Thanks in advance for any assistance offered.
Iain
3 Column CSS example.

<html>
<head>
<title>My Title</title>
<meta http-equiv="content-type" content="text/html;
charset=iso-8859-1" />
<link rel="stylesheet" type="text/css" href="CSS/Standard.css" />
</head>
<body>

<div id="content">
<h1>My Title</h1>
<p>This is The Main Body Of The Page</p>

</div>
<!-- The following is the left hand column. It is built mainly
from a table of links from a database table -->
<div id="side1">
<h4>Search Our Pages</h4>
<form method="post" action="">
<input class="inputBox" name="textfield" class="inputBox" /><br />
<input type="submit" name="Submit" value="Submit" /><br /><br />
</form>
<!-- The first repeater -->
<p>
<asp:Repeater id="Repeater1" OnItemCreated="R1_ItemCreated"
runat="server">
<ItemTemplate><%# DataBinder.Eval(Container.DataItem, "Ticker") %>
</ItemTemplate>
</asp:Repeater>
</p>

<!-- The right hand column. It is built mainly from a table of
Images/Links from a database table -->
<!-- This is where the problem lies. The links are displayed
but the images are not -->
</div>
<div id="side2" border="1">
<p>
<asp:Repeater id="Repeater2" OnItemCreated="R1_ItemCreated"
runat="server">
<ItemTemplate><%# DataBinder.Eval(Container.DataItem, "Ticker") %>
</ItemTemplate>
</asp:Repeater>
</p>
</div>
</body>
</html>

The code behind is

protected void R1_ItemCreated(Object Sender, RepeaterItemEventArgs
e)
{
String iTypeText = "";

switch (e.Item.ItemType) {
case ListItemType.Item:
iTypeText = "Item";
break;
case ListItemType.AlternatingItem:
iTypeText = "AlternatingItem";
break;
case ListItemType.Header:
iTypeText = "Header";
break;
case ListItemType.Footer:
iTypeText = "Footer";
break;
case ListItemType.Separator:
iTypeText = "Separator";
break;
}
}

public class PositionData
{

private string ticker;

public PositionData(string name, string ticker, string PType,
string PImageId, string PTheImageName, string TheAlternateText, string
PTheImageText, string PHRef)
{
this.ticker = "";
if (PType == "Link")
{
this.ticker = "<li><a href=" + ticker.Trim() + ">" + name.Trim()
+ "</a></li>";
};
if (PType == "AdBox")
{
this.ticker = "<p><ASP:Image
id=\"" + PImageId + "\" runat=\"server\" height=\"80px\" width=\"140px
\" imageurl=\"" + PTheImageName + "\" alternatetext = \"" +
TheAlternateText + "\"></ASP:Image><br><a href=\"" + PHRef + "\">" +
PTheImageText + "</a></p>";
};
}

public string Ticker
{
get
{
return ticker;
}
}
}
private void Page_Load(object sender, System.EventArgs e)
{
string LLabel = "";
ArrayList values = new ArrayList();

OleDbConnection con = new
OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" +
Server.MapPath("Databases/TestDB.mdb"));

OleDbCommand cmd = new OleDbCommand();

string LSqlString = "Select * From Links";
con.Open();
cmd.Connection = con;
cmd.CommandType = CommandType.Text;
cmd.CommandText = LSqlString;
OleDbDataReader reader = cmd.ExecuteReader();
LLabel = "<ul>";
values.Add(new PositionData(LLabel, "", "","", "", "", "", ""));
while (reader.Read())
{
string LFormName = reader[0].ToString();
string LSection = reader[1].ToString();
string LLinkName = reader[2].ToString();
string LLink = reader[3].ToString();
values.Add(new PositionData(LLinkName, LLink, "Link","", "", "",
"", ""));
}
LLabel = "</ul>";
values.Add(new PositionData(LLabel, "", "","", "", "", "", ""));
Repeater1.DataSource = values;
Repeater1.DataBind();

con.Close();

values.Clear();

LSqlString = "Select * From Images";
con.Open();
cmd.Connection = con;
cmd.CommandType = CommandType.Text;
cmd.CommandText = LSqlString;
OleDbDataReader reader2 = cmd.ExecuteReader();

int LCounter = 1;
LLabel = "<div class=\"adbox\">";
values.Add(new PositionData(LLabel, "", "","", "", "", "", ""));

while (reader2.Read())
{
string ImageFormName = reader2[0].ToString();
string ImageSection = reader2[1].ToString();
string TheImageText = reader2[2].ToString();
string TheImageName = reader2[3].ToString();
string TheAlternatetext = reader2[4].ToString();
string TheHRef = reader2[5].ToString();
values.Add(new PositionData("", "", "AdBox", "TheImage" +
LCounter.ToString(), TheImageName, TheAlternatetext, TheImageText,
TheHRef));
}
Repeater2.DataSource = values;
Repeater2.DataBind();

LLabel = "<\\div>" ;
values.Add(new PositionData(LLabel, "", "","", "", "", "", ""));

con.Close();

}

May 28 '07 #1
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