I've got 3 textboxes and an InputManager that sets the EmptyMessages of these textboxes. On initial page load, the empty messages are displayed fine, however on an Ajax postback of a radcombobox, these empty messages disappear and leave the textboxes blank.
Why is this happening? Thanks.
Why is this happening? Thanks.
3 Answers, 1 is accepted
0
Hello Paul,
Can you send us the mentioned controls declaration as well as the RadAjaxManager settings so we can replicate the issue on our side and see what went wrong there?
Regards,
Iana
the Telerik team
Can you send us the mentioned controls declaration as well as the RadAjaxManager settings so we can replicate the issue on our side and see what went wrong there?
Regards,
Iana
the Telerik team
Browse the vast support resources we have to jump start your development with RadControls for ASP.NET AJAX. See how to integrate our AJAX controls seamlessly in SharePoint 2007/2010 visiting our common SharePoint portal.
0
Paul J
Top achievements
Rank 1
answered on 16 Aug 2011, 01:44 PM
I just realized what it was. I did not have the RadInputManager1 as an AjaxUpdatedControl for the RadComboBox1. I guess it did not dawn on me that I'd need to do that. I guess I thought if the boxes had an empty message after initial page load, they would retain it automatically on ajax postback, but obviously that is not the case.
I still do have one issue, that being while the empty message are now showing up, they actually first disappear when the ajax postback begins and do not show back up until the postback finishes. Is there code that I can use to adjust this, so that the empty messages do not ever disappear?
here's my full testing code:
page:
codebehind:
I still do have one issue, that being while the empty message are now showing up, they actually first disappear when the ajax postback begins and do not show back up until the postback finishes. Is there code that I can use to adjust this, so that the empty messages do not ever disappear?
here's my full testing code:
page:
<
html
xmlns
=
"http://www.w3.org/1999/xhtml"
>
<
head
runat
=
"server"
>
<
title
></
title
>
</
head
>
<
body
>
<
form
id
=
"form1"
runat
=
"server"
>
<
telerik:RadScriptManager
ID
=
"RadScriptManager1"
runat
=
"server"
AsyncPostBackTimeout
=
"5000"
>
<
Scripts
>
<
asp:ScriptReference
Assembly
=
"Telerik.Web.UI"
Name
=
"Telerik.Web.UI.Common.Core.js"
/>
<
asp:ScriptReference
Assembly
=
"Telerik.Web.UI"
Name
=
"Telerik.Web.UI.Common.jQuery.js"
/>
</
Scripts
>
</
telerik:RadScriptManager
>
<
telerik:RadAjaxManager
ID
=
"RadAjaxManager1"
runat
=
"server"
></
telerik:RadAjaxManager
>
<
div
>
<
asp:Panel
ID
=
"pnl1"
runat
=
"server"
width
=
"100%"
>
<
telerik:RadInputManager
ID
=
"RadInputManager1"
runat
=
"server"
>
<
telerik:TextBoxSetting
BehaviorID
=
"TextBoxBehavior1"
EmptyMessage
=
"Comment 1"
Validation-IsRequired
=
"false"
InitializeOnClient
=
"true"
>
<
TargetControls
>
<
telerik:TargetInput
ControlID
=
"Comment1"
/>
</
TargetControls
>
</
telerik:TextBoxSetting
>
<
telerik:TextBoxSetting
BehaviorID
=
"TextBoxBehavior2"
EmptyMessage
=
"Comment 2"
Validation-IsRequired
=
"false"
InitializeOnClient
=
"true"
>
<
TargetControls
>
<
telerik:TargetInput
ControlID
=
"Comment2"
/>
</
TargetControls
>
</
telerik:TextBoxSetting
>
</
telerik:RadInputManager
>
<
table
>
<
tr
>
<
td
><
telerik:RadComboBox
ID
=
"RadComboBox1"
CollapseAnimation-Type
=
"None"
BackColor
=
"white"
ExpandAnimation-Type
=
"none"
AllowCustomText
=
"true"
MarkFirstMatch
=
"true"
runat
=
"server"
EmptyMessage
=
""
TabIndex
=
"8"
Skin
=
"Office2010Silver"
AutoPostBack
=
"true"
HighlightTemplatedItems
=
"true"
height
=
"200px"
Width
=
"150px"
DropDownWidth
=
"280px"
EnableLoadOnDemand
=
"true"
>
<
Items
>
<
telerik:RadComboBoxItem
Value
=
"1"
Text
=
"one"
/>
<
telerik:RadComboBoxItem
Value
=
"2"
Text
=
"two"
/>
</
Items
>
<
CollapseAnimation
Type
=
"None"
/>
<
ExpandAnimation
Type
=
"None"
/>
</
telerik:RadComboBox
>
</
td
>
<
td
style
=
"min-height:18px;"
><
asp:Label
ID
=
"Label1"
runat
=
"server"
/></
td
>
<
td
><
asp:TextBox
ID
=
"Comment1"
TabIndex
=
"13"
width
=
"160px"
MaxLength
=
"30"
runat
=
"server"
></
asp:TextBox
>
</
td
>
<
td
><
asp:TextBox
ID
=
"Comment2"
TabIndex
=
"14"
width
=
"160px"
MaxLength
=
"30"
runat
=
"server"
></
asp:TextBox
>
</
td
>
</
tr
>
</
table
>
<
telerik:RadAjaxManagerProxy
ID
=
"RadAjaxManagerProxy1"
runat
=
"server"
>
<
AjaxSettings
>
<
telerik:AjaxSetting
AjaxControlID
=
"RadComboBox1"
>
<
UpdatedControls
>
<
telerik:AjaxUpdatedControl
ControlID
=
"Label1"
/>
<
telerik:AjaxUpdatedControl
ControlID
=
"RadInputManager1"
/>
</
UpdatedControls
>
</
telerik:AjaxSetting
>
</
AjaxSettings
>
</
telerik:RadAjaxManagerProxy
>
</
asp:Panel
>
</
div
>
</
form
>
</
body
>
</
html
>
codebehind:
Inherits
System.Web.UI.Page
Protected
Sub
Page_Load(
ByVal
sender
As
Object
,
ByVal
e
As
System.EventArgs)
Handles
Me
.Load
End
Sub
Private
Sub
RadComboBox1_SelectedIndexChanged(
ByVal
sender
As
Object
,
ByVal
e
As
Telerik.Web.UI.RadComboBoxSelectedIndexChangedEventArgs)
Handles
RadComboBox1.SelectedIndexChanged
Label1.Text = RadComboBox1.SelectedItem.Text
'force slight delay
System.Threading.Thread.Sleep(2000)
End
Sub
0
Hello Paul,
Thank you for the sample code. I tested it and was able to replicate the issue.
Basically, you do not need to set the RadInputManager as updated control except some of the textboxes it inputifies is set as such. However it seems that this is the only workaround now.
I have logged the issue for further investigation and fixing, but for now you would indeed add the RadInputManager as updated control.
For second question: Unfortunately we cannot prevent the empty message disappear upon ajax.
Regards,
Iana
the Telerik team
Thank you for the sample code. I tested it and was able to replicate the issue.
Basically, you do not need to set the RadInputManager as updated control except some of the textboxes it inputifies is set as such. However it seems that this is the only workaround now.
I have logged the issue for further investigation and fixing, but for now you would indeed add the RadInputManager as updated control.
For second question: Unfortunately we cannot prevent the empty message disappear upon ajax.
Regards,
Iana
the Telerik team
Browse the vast support resources we have to jump start your development with RadControls for ASP.NET AJAX. See how to integrate our AJAX controls seamlessly in SharePoint 2007/2010 visiting our common SharePoint portal.