Problem with textbox inside updatepanel - not causing OnTextChanged event
- by DaDa
I have the following situation: I have a textbox inside an ajax updatepanel. Wherever the user types in the textbox I must display a message (different message that depends on the user typed data).
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Always">
<ContentTemplate>
<asp:TextBox ID="txtMyTexbox" runat="server" Width="500px" OnTextChanged="txtMyTexbox_TextChanged" AutoPostBack="true"></asp:TextBox>
<br />
<asp:Label ID="lblMessage" runat="server" CssClass="errorMessage" Visible="false">Hello World</asp:Label>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="txtMyTexbox" />
</Triggers>
</asp:UpdatePanel>
In server side I have written the following at page load
ScriptManager.GetCurrent(this).RegisterAsyncPostBackControl(txtMyTexbox);
and the method like this
protected void txtMyTexbox_TextChanged(object sender, EventArgs e)
{
if (.....)
{
lblMessage.Visible = false;
}
else
{
lblMessage.Visible = true;
}
}
My problem now is that: when the user types in the textbox it doesn't cause OnTextChanged event.
Am I missing something?
