Hey I'm having an issue updating a dropdown box inside of an
update panel.
Works perfectly if the page posts back, but I'd prefer seemless loading:
Here my form code:
<asp:ScriptManager ID="ScriptManager1" EnablePartialRendering="true" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="ajaxClassifications" UpdateMode="Conditional" runat="server">
<ContentTemplate>
<td style="font-size: small; color: #003853; width: 50%;">
<asp:DropDownList AutoPostBack="true" ID="ddlClassifications" runat="server" Width="99%"
Style="font-size: medium" OnSelectedIndexChanged="ddlClassifications_SelectedIndexChanged">
</asp:DropDownList>
</td>
<td style="font-size: small; color: #003853; width: 50%;">
<asp:DropDownList ID="ddlSubClassifications" runat="server" Width="99%" Style="font-size: medium">
</asp:DropDownList>
</td>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="ddlClassifications" EventName="SelectedIndexChanged" />
</Triggers>
</asp:UpdatePanel>
Heres the code in my code behind:
protected void ddlClassifications_SelectedIndexChanged(object sender, EventArgs e)
{
ddlSubClassifications.Items.Clear();
getSubClassifications(int.Parse(ddlClassifications.SelectedValue));
}
Is there something I am missing here?
Thanks in advance!
