At first look at the below aspx:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm4.aspx.cs" Inherits="Amlak.WebForm4" %>
<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<
html
xmlns
=
"http://www.w3.org/1999/xhtml"
>
<
head
runat
=
"server"
>
<
title
></
title
>
</
head
>
<
body
>
<
form
id
=
"form1"
runat
=
"server"
>
<
asp:ScriptManager
ID
=
"ScriptManager1"
runat
=
"server"
>
</
asp:ScriptManager
>
<
div
>
<
telerik:RadAjaxManager
ID
=
"RadAjaxManager1"
runat
=
"server"
>
<
AjaxSettings
>
<
telerik:AjaxSetting
AjaxControlID
=
"RadComboBox1"
>
<
UpdatedControls
>
<
telerik:AjaxUpdatedControl
ControlID
=
"CheckBox1"
UpdatePanelRenderMode
=
"Inline"
/>
</
UpdatedControls
>
</
telerik:AjaxSetting
>
</
AjaxSettings
>
</
telerik:RadAjaxManager
>
<
telerik:RadComboBox
ID
=
"RadComboBox1"
runat
=
"server"
AutoPostBack
=
"True"
AppendDataBoundItems
=
"True"
OnSelectedIndexChanged
=
"RadComboBox1_SelectedIndexChanged"
>
<
Items
>
<
telerik:RadComboBoxItem
runat
=
"server"
Text
=
"1"
Value
=
"1"
/>
<
telerik:RadComboBoxItem
runat
=
"server"
Text
=
"2"
Value
=
"2"
/>
<
telerik:RadComboBoxItem
runat
=
"server"
Text
=
"3"
Value
=
"3"
/>
<
telerik:RadComboBoxItem
runat
=
"server"
Text
=
"4"
Value
=
"4"
/>
</
Items
>
</
telerik:RadComboBox
>
<
br
/>
<
br
/>
<
asp:CheckBox
ID
=
"CheckBox1"
runat
=
"server"
AutoPostBack
=
"True"
OnCheckedChanged
=
"CheckBox1_CheckedChanged"
Text
=
"Check Me"
TextAlign
=
"Left"
/>
<
br
/>
<
br
/>
<
asp:TextBox
ID
=
"TextBox1"
runat
=
"server"
></
asp:TextBox
>
</
div
>
</
form
>
</
body
>
</
html
>
My code behind is like this:
using
System;
using
System.Collections.Generic;
using
System.Linq;
using
System.Web;
using
System.Web.UI;
using
System.Web.UI.WebControls;
namespace
Amlak
{
public
partial
class
WebForm4 : System.Web.UI.Page
{
protected
void
Page_Load(
object
sender, EventArgs e)
{
}
protected
void
RadComboBox1_SelectedIndexChanged(
object
sender, Telerik.Web.UI.RadComboBoxSelectedIndexChangedEventArgs e)
{
if
(RadComboBox1.SelectedItem.Value ==
"2"
)
{
CheckBox1.Checked =
true
;
}
else
{
CheckBox1.Checked =
false
;
}
}
protected
void
CheckBox1_CheckedChanged(
object
sender, EventArgs e)
{
if
(CheckBox1.Checked)
{
TextBox1.Text =
"text"
;
}
else
{
TextBox1.Text =
""
;
}
}
}
}
My goals:
I want to force RadComboBox1
to work in AJAX mode
and change the CheckBox1.Checked by defined conditions in code behind.
-> do not want postback for this.
I want to force CheckBox1
to work in PostBack mode and change the TextBox1.text
by defined conditions in code behind. -> I want postback for this.
In this scenario -> RadComboBox1
works fine
but I don't know why OnCheckedChanged="CheckBox1_CheckedChanged"
does not fire when we change check of CheckBox1
! (because we added it as update of RadComboBox1
In RadAjaxManager1
).
My questions:
1-Should I add RadComboBox1
as update Of RadComboBox1
or not? However it works fine without adding this.
2-If we add ChechBox1
To RadAjaxManager1
like below:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm4.aspx.cs" Inherits="Amlak.WebForm4" %>
<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<
html
xmlns
=
"http://www.w3.org/1999/xhtml"
>
<
head
runat
=
"server"
>
<
title
></
title
>
</
head
>
<
body
>
<
form
id
=
"form1"
runat
=
"server"
>
<
asp:ScriptManager
ID
=
"ScriptManager1"
runat
=
"server"
>
</
asp:ScriptManager
>
<
div
>
<
telerik:RadAjaxManager
ID
=
"RadAjaxManager1"
runat
=
"server"
>
<
AjaxSettings
>
<
telerik:AjaxSetting
AjaxControlID
=
"RadComboBox1"
>
<
UpdatedControls
>
<
telerik:AjaxUpdatedControl
ControlID
=
"CheckBox1"
UpdatePanelRenderMode
=
"Inline"
/>
</
UpdatedControls
>
</
telerik:AjaxSetting
>
<
telerik:AjaxSetting
AjaxControlID
=
"CheckBox1"
>
<
UpdatedControls
>
<
telerik:AjaxUpdatedControl
ControlID
=
"TextBox1"
/>
</
UpdatedControls
>
</
telerik:AjaxSetting
>
</
AjaxSettings
>
</
telerik:RadAjaxManager
>
<
telerik:RadComboBox
ID
=
"RadComboBox1"
runat
=
"server"
AutoPostBack
=
"True"
AppendDataBoundItems
=
"True"
OnSelectedIndexChanged
=
"RadComboBox1_SelectedIndexChanged"
>
<
Items
>
<
telerik:RadComboBoxItem
runat
=
"server"
Text
=
"1"
Value
=
"1"
/>
<
telerik:RadComboBoxItem
runat
=
"server"
Text
=
"2"
Value
=
"2"
/>
<
telerik:RadComboBoxItem
runat
=
"server"
Text
=
"3"
Value
=
"3"
/>
<
telerik:RadComboBoxItem
runat
=
"server"
Text
=
"4"
Value
=
"4"
/>
</
Items
>
</
telerik:RadComboBox
>
<
br
/>
<
br
/>
<
asp:CheckBox
ID
=
"CheckBox1"
runat
=
"server"
AutoPostBack
=
"True"
OnCheckedChanged
=
"CheckBox1_CheckedChanged"
Text
=
"Check Me"
TextAlign
=
"Left"
/>
<
br
/>
<
br
/>
<
asp:TextBox
ID
=
"TextBox1"
runat
=
"server"
></
asp:TextBox
>
</
div
>
</
form
>
</
body
>
</
html
>
So it works fine in AJAX mode, but I want to force CheckBox1
to work in PostBack!
How can I fix this issue?
3-Should I add TextBox1
as update of RadComboBox1
in RadAjaxManager
or not?
Thanks for attention to my question.
best regards