When we use loading panel in our project we are getting some errors.
Our project have two panels and also two button into these panels when and
the loadiing panel firing with buttons ,we are getting _event error and the
other error "Microsoft JScript runtime error: 'null' is null or not an object rad ajax manager".How we solve that problem..
(In other words,I wanna control loading panel with that buttons..)
our code like that;
<panel>
<button>
</panel>
<panel>
<button>
<radgrid>
</panel>
<loading panel>
Some code parts are coppied bellow there..
<telerik:RadAjaxManager ID="SiparisRadAjaxManager" DefaultLoadingPanelID="SiparisRadAjaxLoadingPanel"
runat="server">
<AjaxSettings>
<telerik:AjaxSetting AjaxControlID="SiparisRadGrid">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="SiparisRadGrid" LoadingPanelID="SiparisRadAjaxLoadingPanel" />
</UpdatedControls>
</telerik:AjaxSetting>
<telerik:AjaxSetting AjaxControlID="SiparisKaydetButton" EventName="SiparisKaydet_Click">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="SiparisPanel" LoadingPanelID="SiparisRadAjaxLoadingPanel" />
</UpdatedControls>
</telerik:AjaxSetting>
<telerik:AjaxSetting AjaxControlID="SiparisDetayKaydetButton" EventName="SiparisDetayKaydetButton_Click">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="SiparisDetayPanel" LoadingPanelID="SiparisRadAjaxLoadingPanel" />
</UpdatedControls>
</telerik:AjaxSetting>
</AjaxSettings>
</telerik:RadAjaxManager>
<telerik:RadAjaxLoadingPanel ID="SiparisRadAjaxLoadingPanel" Skin="Web20"
runat="server">
</telerik:RadAjaxLoadingPanel>
8 Answers, 1 is accepted
I followed your scenario and prepared a simple test project. Please examine it and let me know if it works as expected or if I am leaving something from your logic out.
Kind regards,
Pavlina
the Telerik team

<telerik:RadAjaxManager ID="SiparisRadAjaxManager" DefaultLoadingPanelID="SiparisRadAjaxLoadingPanel"
runat="server">
</telerik:RadAjaxManager>
<telerik:RadAjaxLoadingPanel ID="SiparisRadAjaxLoadingPanel" Skin="Web20" runat="server">
</telerik:RadAjaxLoadingPanel>
<telerik:RadAjaxPanel ID="SiparisRadAjaxPanel" runat="server" HorizontalAlign="NotSet"
LoadingPanelID="SiparisRadAjaxLoadingPanel" EnableAJAX="true">
<table style="width: 100%">
<tr>
<td align="center">
<asp:Button ID="GonderButton" runat="server" OnClick="GonderButton_Click"
Enabled="false" />
</td>
</tr>
<tr>
<td align="center">
<asp:TextBox ID="IDTextBox" runat="server" Style="display: none" ></asp:TextBox>
</telerik:RadAjaxPanel>
<telerik:RadAjaxPanel ID="SiparisPanel" runat="server" HorizontalAlign="NotSet"
LoadingPanelID="SiparisRadAjaxLoadingPanel" EnableAJAX="true"> ...............
.........
</telerik:RadAjaxPanel>
but now When using rad ajax panel TextBox value lost I think because of the postback

I tried your sending example but also I m using (asp)update panel(to update grid) so still I get some errors..
Note that using UpdatePanel and RadAjaxManager / RadAjaxPanel in one application for updating same part of the page is not supported scenario.
Best wishes,
Pavlina
the Telerik team

But when Im using only radajaxmanager with radajaxloading panel,textbox values is lost ,How can I resolve that problem?

I followed your scenario and prepared a sample project attached to this post. Please check it out and let me know how it goes on your end and what differs in your case.
All the best,
Pavlina
the Telerik team

I solved the problem with seperating the code blocks..like that
<telerik:RadAjaxManager>
<AjaxSettings>
<telerik:AjaxSetting AjaxControlID="SiparisRadGrid">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="SiparisDetayPanel" />
<telerik:AjaxUpdatedControl ControlID="SiparisRadGrid" LoadingPanelID="SiparisRadAjaxLoadingPanel" />
</UpdatedControls>.........................................
<
telerik:RadAjaxLoadingPanel ID="SiparisRadAjaxLoadingPanel" Skin="Web20" runat="server">
</telerik:RadAjaxLoadingPanel>
<asp:UpdatePanel runat="server" ID="pan">
<ContentTemplate>
<asp:TextBox ID="TextBox" runat="server" Style="display: none" Text=""></asp:TextBox>
</ContentTemplate>
</asp:UpdatePanel>
<telerik:RadAjaxPanel ID="panel" runat="server">..............
</telerik:RadAjaxPanel>