I want to select an item which is a foldername and then all filenames under that folder will display automatically in a listbox. My code is here. it does not work unless I have a button clicked which may does nothing. Is there a way to automatically populate
the files after dropdownlist is selected using C# in ASP?
Thanks.
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
string folderName = DropDownList1.SelectedValue.ToString();
string path = @"\\temp\" + folderName + "\\";
try
{
if (DropDownList1.SelectedItem.ToString() != "")
{
DirectoryInfo dirInfo = new DirectoryInfo(path);
FileInfo[] files = dirInfo.GetFiles();
ListBox1.Items.Clear();
foreach (FileInfo file in files)
{
ListBox1.Items.Add(file.ToString());
}
ListBox1.Visible = true;
}
else
{
ListBox1.Items.Clear();
ListBox1 ...
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