Listbox selectedIndexChanged doesn't fire when selecting an item from the list

c# asp.net listbox selectedindexchanged
danielle picture danielle · Feb 20, 2014 · Viewed 8.1k times · Source

I have a listbox that needs to be populated by directories. i have successfully filled the listbox with the Directories but my problem is i can't get the selected item's value. i placed a breakpoint on the SelectedIndexChanged event but my web application doesn't seem to run through that code.

Here is my code for populating the listbox:

        lstDirectories.DataSource = dtDirectories;
        lstDirectories.DataValueField = "DirectoryID";
        lstDirectories.DataTextField = "DirectoryName";
        lstDirectories.DataBind();

This is how i get value from the listbox on the SelectedIndexChanged Event:

        TextBox1.Text = lstDirectories.SelectedItem.Value.ToString();

am i doing something wrong here? thanks for the help! :)

Answer

Afnan Ahmad picture Afnan Ahmad · Feb 20, 2014

Use the property:-

AutoPostBack="True"

By default it is False.

Related questions

Getting all selected values from an ASP ListBox

I have an ASP ListBox that has the SelectionMode set to "Multiple". Is there any way of retreiving ALL selected elements and not just the last one? <asp:ListBox ID="lstCart" runat="server" Height="135px" Width="267px" SelectionMode="Multiple"&…

Read More
How to set multiple items as selected in ListBox?

I have one ListBox with selection mode of multiple. In code behind, I want to set some values as selected. These values are present in a ListItems[] named 'Names'. HTML code: <asp:ListBox ID="lbto" class="chosen" runat="server" …

Read More
How to get the URL of the current page in C#

Can anyone help out me in getting the URL of the current working page of ASP.NET in C#?

Read More