Solved

C# Using Database column as part of the Image name

Posted on 2013-01-07
4
238 Views
Last Modified: 2013-01-08
Hi

I'm trying to learn c# but from a classic asp background, I get very confused (easily)

I am trying to fetch and dispay an image. All I need from the database is the productid the rest of the url will be hard coded like this

"http://www.example.com/" + <%# MyProductid %> + ".jpg"


 <asp:Image ID="Image1" runat="server" Width="200" Height="200" ImageUrl='<%# "http://www.example.com/" + <%# MyProductid %> + ".jpg" %>' />

but that does not work.

it does work for things like title
<title><%= MyTitle %></title>

my data looks like this

public partial class _Default : System.Web.UI.Page 
{
    private string myTitle;
    protected string MyTitle
    {
        get { return myTitle; }
        set { myTitle = value; }
    }
    private string myHeading;
    protected string MyHeading
    {
        get { return myHeading; }
        set { myHeading = value; }
    }
    private string myProductinfo;
    protected string MyProductinfo
    {
        get { return myProductinfo; }
        set { myProductinfo = value; }
    }
    private string myProductid;
    protected string MyProductid
    {
        get { return myProductid; }
        set { myProductid = value; }
    }
    protected void Page_Load(object sender, EventArgs e)
    {
        String ConnStr = "";
        String SQL = "SELECT a.productname,a.productid,b.description,a.tag,a.modelnumber FROM table a join be_posts b on a.productid = b.productid WHERE a.productid ='20130'";
        SqlDataAdapter TitlesAdpt = new SqlDataAdapter(SQL, ConnStr);
        DataSet Titles = new DataSet();
        TitlesAdpt.Fill(Titles);
        DataRow dr = Titles.Tables[0].Rows[0];
        dr["productname"].ToString();
        MyTitle = dr["productname"].ToString();
        myHeading = dr["productname"].ToString();
        myProductinfo = dr["description"].ToString();
        myProductid = dr["productid"].ToString();
        
    }
}

Open in new window


please can someone show me an example of how to do this properly?
0
Comment
Question by:jasont09
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 
LVL 20

Expert Comment

by:informaniac
ID: 38753548
Is this a typo or is this what you have written?
<%# MyProductid %> 

Open in new window


Does changing it to the below help?
<%= MyProductid %> 

Open in new window

0
 

Author Comment

by:jasont09
ID: 38753696
thanks

I changed it as above to

<asp:Image ID="Image1" runat="server" Width="200" Height="200" ImageUrl='"http://www.example.com/" + <%= MyProductid %> + ".jpg"' />

but the output comes outs as

<img id="Image1" src="&quot;http://www.example.com/"%20+%20<%=%20MyProductid%20%>%20+%20&quot;.jpg&quot;" style="height:200px;width:200px;border-width:0px;" />
0
 
LVL 19

Accepted Solution

by:
Manoj Patil earned 500 total points
ID: 38753923
<asp:Image ID="Image1" runat="server" 
         ImageUrl='<%# "http://www.example.com/" + Eval("MyProductid ") %> + ".jpg"'' />

Open in new window

See this tutorial
http://www.ezzylearning.com/tutorial.aspx?tid=1399196
Or if the control is not in Grid or Datalist, then you can simply add by code behind
Image1.ImageUrl="http://www.example.com/"+ dr["MyProductid "].ToString() +".jpg";

Open in new window

0
 

Author Closing Comment

by:jasont09
ID: 38754355
Thanks

This was the one

Image1.ImageUrl="http://www.example.com/"+ dr["MyProductid "].ToString() +".jpg";

I kept reading about Eval("") but did not realise it only works with grid and list. I am using datatable which explains it.

Many thanks
0

Featured Post

PeopleSoft Has Never Been Easier

PeopleSoft Adoption Made Smooth & Simple!

On-The-Job Training Is made Intuitive & Easy With WalkMe's On-Screen Guidance Tool.  Claim Your Free WalkMe Account Now

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

ASP.Net to Oracle Connectivity Recently I had to develop an ASP.NET application connecting to an Oracle database.As I am doing it first time ,I had to solve several problems. This article will help to such developers  to develop an ASP.NET client…
International Data Corporation (IDC) prognosticates that before the current the year gets over disbursing on IT framework products to be sent in cloud environs will be $37.1B.
If you’ve ever visited a web page and noticed a cool font that you really liked the look of, but couldn’t figure out which font it was so that you could use it for your own work, then this video is for you! In this Micro Tutorial, you'll learn yo…
Add bar graphs to Access queries using Unicode block characters. Graphs appear on every record in the color you want. Give life to numbers. Hopes this gives you ideas on visualizing your data in new ways ~ Create a calculated field in a query: …

690 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question