drop-down list in C# issue - asp.net

Question

drop-down list in C#.net not showing the items it supposed to show!
i hv a drop-down list that suppose to show image names from a folder, but it is not doing that!
i dont have errors when launching the .aspx file!
buuuuuut when i get output there is only empty dropdown list!
this the ManageProducts.aspx codes are:
Name:
Type:
" SelectCommand="SELECT * FROM [ProductTypes] ORDER BY [Name]">
Price:
Image:
Description:
and this the behind codes:
using System;
using System.Collections;
using System.IO;
public partial class PagesNew_ManagementPages_ManageProducts : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if(!IsPostBack) //this baby makes the data not come every time the pg is refreshed ,
//postback=refresh page
GetImages();
}
private void GetImages()
{
try
{
//get all filepaths
string[] images = Directory.GetFiles(Server.MapPath("~/Img/Products/"));
//get all filenames and put them in a stupid array....yeah DSA days
ArrayList imageList = new ArrayList();
foreach (string image in images)
{
string imageName = image.Substring(image.LastIndexOf(#"\", StringComparison.Ordinal) + 1);
imageList.Add(imageName);
// see the Array in dd viwe datasource and refresh
ddImage.AppendDataBoundItems = true;
ddImage.DataBind();
}
}
catch (Exception e)
{
lblResult.Text = e.ToString();
}
}
protected void ddImage_SelectedIndexChanged(object sender, EventArgs e)
{
}
}

Answer 1

You want to bind your datalist outside of the for loop.
ArrayList imageList = new ArrayList();
foreach (string image in images)
{
string imageName = image.Substring(image.LastIndexOf(#"\", StringComparison.Ordinal) + 1);
imageList.Add(imageName);
}
ddImage.DataSource = imageList;
ddImage.AppendDataBoundItems = true;
ddImage.DataBind();