I have asp.net content page with an update panel, asp.net controls with ajax extenders and it has asp.net button with event click.
everything is working ok exept one case.
I have 3 DropDownList with CascadingDropDown extenders. when I click the button without selecting anything from DropDownLists then click on the button the event click will work OK but if I select anything my page will respond when I click on the button.
I already I added triggers for click button.
is there anything I should check to fix this problem???
here is my code:
<%@ Page Title="" Language="C#" MasterPageFile="~/Master.
Master" AutoEventWireup="true" CodeBehind="WebForm2.aspx.cs" Inherits="IMAM_APPLICATION.WebForm2" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
</asp:Content>
<asp:Content ID="Content3" ContentPlaceHolderID="ContentPlaceHolder2" runat="server">
<asp:UpdatePanel ID="UPDDL" runat="server">
<ContentTemplate>
<asp:Panel ID="PDDL" runat="server">
<asp:DropDownList ID="cmbWorkField" runat="server" Style="top: 41px; left: 126px;
position: absolute; height: 22px; width: 126px">
</asp:DropDownList>
<asp:DropDownList runat="server" ID="cmbOccupation" Style="top: 77px; left: 127px;
position: absolute; height: 22px; width: 77px">
</asp:DropDownList>
<asp:DropDownList ID="cmbSubOccup" runat="server"
style="position:absolute; top: 116px; left: 126px;">
</asp:DropDownList>
<cc1:CascadingDropDown ID="cmbWorkField_CascadingDropDown" runat="server"
TargetControlID="cmbWorkField"
Category="WorkField"
LoadingText="Please Wait ..."
PromptText="Select Wor kField ..."
ServiceMethod="GetWorkField"
ServicePath="ServiceTags.asmx">
</cc1:CascadingDropDown>
<cc1:CascadingDropDown ID="cmbOccupation_CascadingDropDown" runat="server"
TargetControlID="cmbOccupation"
Category="Occup"
LoadingText="Please wait..."
PromptText="Select Occup ..."
ServiceMethod="GetOccup"
ServicePath="ServiceTags.asmx"
ParentControlID="cmbWorkField">
</cc1:CascadingDropDown>
<cc1:CascadingDropDown ID="cmbSubOccup_CascadingDropDown" runat="server"
Category="SubOccup"
Enabled="True"
LoadingText="Please Wait..."
ParentControlID="cmbOccupation"
PromptText="Select Sub Occup"
ServiceMethod="GetSubOccup"
ServicePath="ServiceTags.asmx"
TargetControlID="cmbSubOccup">
</cc1:CascadingDropDown>
</asp:Panel>
<asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Button1" EventName="Click" />
</Triggers>
</asp:UpdatePanel>
</asp:Content>
........................
here is the code behind:
....................................................
protected void Button1_Click(object sender, EventArgs e)
{
Label1.Text = "you click me";
}
