Ok i am posting my code, if you guys can have a look
The control's ascx file is below
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="BookEditionCompletionControl.ascx.cs" Inherits="ITN.Controls.ImdisList.BookEditionCompletionControl" %>
<
telerik:RadAjaxManagerProxy
runat
=
"server"
ID
=
"RadAjaxManagerPRoxy1"
>
<
AjaxSettings
>
<
telerik:AjaxSetting
AjaxControlID
=
"btnAcceptReject"
>
<
UpdatedControls
>
<
telerik:AjaxUpdatedControl
ControlID
=
"pnlControls"
/>
</
UpdatedControls
>
</
telerik:AjaxSetting
>
<
telerik:AjaxSetting
AjaxControlID
=
"btnTranslationFinalized"
>
<
UpdatedControls
>
<
telerik:AjaxUpdatedControl
ControlID
=
"pnlControls"
UpdatePanelRenderMode
=
"Inline"
/>
</
UpdatedControls
>
</
telerik:AjaxSetting
>
</
AjaxSettings
>
</
telerik:RadAjaxManagerProxy
>
<
asp:HiddenField
runat
=
"server"
ID
=
"hdnEditedLanguageId"
/>
<
asp:RadioButtonList
runat
=
"server"
ID
=
"btnAcceptReject"
RepeatDirection
=
"Horizontal"
CssClass
=
"checkboxlist borderless"
ValidationGroup
=
"data"
AutoPostBack
=
"true"
OnSelectedIndexChanged
=
"radioButtonList_SelectedIndexChanged"
>
<
asp:ListItem
Text
=
"The edition is hereby validated for conformity to standards"
Value
=
"0"
Selected
=
"True"
></
asp:ListItem
>
<
asp:ListItem
Text
=
"The edition does not meet standards and still has to be reviewed"
Value
=
"1"
></
asp:ListItem
>
</
asp:RadioButtonList
>
<
asp:RequiredFieldValidator
ID
=
"vldAcceptReject"
ControlToValidate
=
"btnAcceptReject"
runat
=
"server"
CssClass
=
"text-error"
Text
=
"please check an option"
ValidationGroup
=
"data"
></
asp:RequiredFieldValidator
>
<
asp:Panel
runat
=
"server"
ID
=
"pnlEditionTranslated"
CssClass
=
"checkboxlist"
Visible
=
"false"
>
<
asp:RadioButtonList
runat
=
"server"
ID
=
"btnTranslationFinalized"
RepeatDirection
=
"Horizontal"
CssClass
=
"checkboxlist borderless"
ValidationGroup
=
"data"
AutoPostBack
=
"true"
OnSelectedIndexChanged
=
"radioButtonList_SelectedIndexChanged"
>
<
asp:ListItem
Text
=
"Edition translation is hereby finalized."
Value
=
"0"
Selected
=
"True"
></
asp:ListItem
>
<
asp:ListItem
Text
=
"Translation is still underway"
Value
=
"1"
></
asp:ListItem
>
</
asp:RadioButtonList
>
</
asp:Panel
>
<
asp:Panel
runat
=
"server"
ID
=
"pnlControls"
>
<
table
class
=
"table table-bordered level1"
>
<
tbody
>
<
tr
>
<
td
class
=
"label-column"
>
<
span
>Edition Title</
span
> <
span
class
=
"text-error"
>*</
span
>
</
td
>
<
td
class
=
"data-cell"
>
<
asp:TextBox
ID
=
"txtTitle"
placeholder
=
"The title in the specified edition language"
data-description
=
"Title of the edition"
CssClass
=
"compact-field required-input"
runat
=
"server"
Width
=
"1000"
MaxLength
=
"400"
required
=
"title required"
></
asp:TextBox
>
<
asp:RequiredFieldValidator
ID
=
"vldTitle"
ControlToValidate
=
"txtTitle"
runat
=
"server"
CssClass
=
"text-error"
Text
=
"title required"
ValidationGroup
=
"data"
></
asp:RequiredFieldValidator
>
</
td
>
</
tr
>
<
tr
>
<
td
class
=
"label-column"
>
<
span
>Registration Date</
span
> <
span
class
=
"text-error"
>*</
span
>
</
td
>
<
td
class
=
"data-cell"
>
<
asp:TextBox
ID
=
"dateIssue"
placeholder
=
"issue date"
CssClass
=
"compact-field datepicker readonly-enabled-looklike"
runat
=
"server"
Width
=
"100"
data-date-format
=
"dd/mm/yyyy"
ReadOnly
=
"true"
></
asp:TextBox
>
<
asp:RequiredFieldValidator
ID
=
"vldIssueDate"
runat
=
"server"
ControlToValidate
=
"dateIssue"
Text
=
"issue date required"
ValidationGroup
=
"data"
CssClass
=
"text-error"
></
asp:RequiredFieldValidator
>
</
td
>
</
tr
>
<
tr
>
<
td
class
=
"label-column"
>
<
span
>Marketing Blurb</
span
> <
span
class
=
"text-error"
>*</
span
>
</
td
>
<
td
class
=
"data-cell"
>
<
asp:TextBox
ID
=
"txtMarketingBlurb"
placeholder
=
"marketing blurb"
CssClass
=
"compact-field required-input"
runat
=
"server"
Width
=
"1000"
MaxLength
=
"400"
TextMode
=
"MultiLine"
Height
=
"80"
></
asp:TextBox
>
<
asp:RequiredFieldValidator
ID
=
"vldMarketingBlurb"
runat
=
"server"
ControlToValidate
=
"txtMarketingBlurb"
Text
=
"Abstract of the publication required"
ValidationGroup
=
"data"
CssClass
=
"text-error"
></
asp:RequiredFieldValidator
>
</
td
>
</
tr
>
<
tr
>
<
td
class
=
"label-column"
>
<
span
>Abstract</
span
> <
span
class
=
"text-error"
>*</
span
>
</
td
>
<
td
class
=
"data-cell"
>
<
asp:TextBox
ID
=
"txtAbstract"
placeholder
=
"excerpt of the publication"
CssClass
=
"compact-field required-input"
runat
=
"server"
Width
=
"1000"
MaxLength
=
"400"
TextMode
=
"MultiLine"
Height
=
"80"
></
asp:TextBox
>
<
asp:RequiredFieldValidator
ID
=
"vldAsbtract"
runat
=
"server"
ControlToValidate
=
"txtAbstract"
Text
=
"Abstract required"
ValidationGroup
=
"data"
CssClass
=
"text-error"
></
asp:RequiredFieldValidator
>
</
td
>
</
tr
>
<
tr
>
<
td
class
=
"label-column"
>
<
span
>Number Of Pages</
span
> <
span
class
=
"text-error star"
>*</
span
>
</
td
>
<
td
class
=
"data-cell"
>
<
asp:TextBox
ID
=
"txtPages"
placeholder
=
"pages"
CssClass
=
"compact-field text-right required-input"
runat
=
"server"
Width
=
"70"
data-type
=
"int"
data-min
=
"1"
></
asp:TextBox
>
<
asp:RequiredFieldValidator
ID
=
"vldPages"
runat
=
"server"
ControlToValidate
=
"txtPages"
Text
=
"number of pages required"
ValidationGroup
=
"data"
CssClass
=
"text-error"
></
asp:RequiredFieldValidator
>
</
td
>
</
tr
>
<
tr
>
<
td
class
=
"label-column"
>
<
span
>Library Id</
span
> <
span
class
=
"text-error"
>*</
span
>
</
td
>
<
td
class
=
"data-cell"
>
<
asp:TextBox
ID
=
"txtLibraryId"
placeholder
=
"library id"
CssClass
=
"compact-field required-input"
runat
=
"server"
Width
=
"400"
MaxLength
=
"10"
></
asp:TextBox
>
<
asp:RequiredFieldValidator
ID
=
"vldLibraryId"
ControlToValidate
=
"txtLibraryId"
runat
=
"server"
CssClass
=
"text-error"
Text
=
"library Id required"
ValidationGroup
=
"data"
></
asp:RequiredFieldValidator
>
</
td
>
</
tr
>
<
tr
>
<
td
class
=
"label-column"
>
<
span
>Attached Documents</
span
>
</
td
>
<
td
class
=
"data-cell"
>
<
asp:Panel
runat
=
"server"
ID
=
"pnlDocumentsHost"
CssClass
=
"documents-host"
>
<
div
>No documents added.</
div
>
</
asp:Panel
>
</
td
>
</
tr
>
</
tbody
>
</
table
>
</
asp:Panel
>
and the handler from the code behind
this control is hosted inside another user control called BookEditionsControl
which in turn is inside a master page where the RadAjaxManager is hosted