Question

AJAX collapsable panel extender - expanded image not showing?

Asked by: AidenA

I can't for the life of me figure out why this is now working. I have 5 collapsably panel extenders... all working happily. But one of them... when i click on the update panel to expand the update panel it's related to... the expand image (expand_blue.jpg) doesn't change to a collapse image (collapse_blue.jpg).

All the other 4 are working fine and the images change correctly etc... except this one. And everything i can see looks the same? Code is below. Any ideas? (the one which is not working is the second one CollapsiblePanelExtender2: TargetControlID="pnlContentOpenedClosedCredits" )

<cc1:CollapsiblePanelExtender   ID="CollapsiblePanelExtender1" 
                                        runat="server" 
                                        TargetControlID="pnlContentOpenClosedQueries" 
                                        ExpandControlID="pnlTitleOpenClosedQueries" 
                                        CollapseControlID="pnlTitleOpenClosedQueries" 
                                        collapsed = "True"
                                        textlabelid="lblExplain2" 
                                        ImageControlID="imgOpenClosedQueries" 
                                        CollapsedImage="images/expand_blue.jpg" 
                                        ExpandedImage="images/collapse_blue.jpg" 
                                        SuppressPostBack="True"
                                        Enabled="True"
                                        BehaviorID="PanelExtender1">
                    </cc1:CollapsiblePanelExtender>
                    <cc1:CollapsiblePanelExtender   ID="CollapsiblePanelExtender2" 
                                        runat="server" 
                                        TargetControlID="pnlContentOpenedClosedCredits" 
                                        ExpandControlID="pnlTitleOpenedClosedCredits" 
                                        CollapseControlID="pnlTitleOpenedClosedCredits" 
                                        collapsed = "True"
                                        textlabelid="lblExplain2" 
                                        ImageControlID="imgOpenedClosedCredits" 
                                        CollapsedImage="images/expand_blue.jpg" 
                                        ExpandedImage="images/collapse_blue.jpg" 
                                        SuppressPostBack="True"
                                        Enabled="True"
                                        BehaviorID="PanelExtender2">
                    </cc1:CollapsiblePanelExtender>
                    <cc1:CollapsiblePanelExtender   ID="CollapsiblePanelExtender3" 
                                        runat="server" 
                                        TargetControlID="pnlContentExplain" 
                                        ExpandControlID="pnlTitleExplain" 
                                        CollapseControlID="pnlTitleExplain" 
                                        collapsed = "True"
                                        textlabelid="lblExplain2" 
                                        ImageControlID="imgExplain" 
                                        CollapsedImage="images/expand_blue.jpg" 
                                        ExpandedImage="images/collapse_blue.jpg" 
                                        SuppressPostBack="True"
                                        Enabled="True"
                                        BehaviorID="PanelExtender3">
                    </cc1:CollapsiblePanelExtender>
                    <cc1:CollapsiblePanelExtender   ID="CollapsiblePanelExtender4" 
                                        runat="server" 
                                        TargetControlID="pnlContentValidate" 
                                        ExpandControlID="pnlTitleValidate" 
                                        CollapseControlID="pnlTitleValidate" 
                                        collapsed = "True"
                                        textlabelid="lblExplain2" 
                                        ImageControlID="imgValidate" 
                                        CollapsedImage="images/expand_blue.jpg" 
                                        ExpandedImage="images/collapse_blue.jpg" 
                                        SuppressPostBack="True"
                                        Enabled="True"
                                        BehaviorID="PanelExtender4">
                    </cc1:CollapsiblePanelExtender>
                    <cc1:CollapsiblePanelExtender   ID="CollapsiblePanelExtender5" 
                                        runat="server" 
                                        TargetControlID="pnlContentSummary" 
                                        ExpandControlID="pnlTitleSummary" 
                                        CollapseControlID="pnlTitleSummary" 
                                        collapsed = "True"
                                        textlabelid="lblExplain2" 
                                        ImageControlID="imgSummary" 
                                        CollapsedImage="images/expand_blue.jpg" 
                                        ExpandedImage="images/collapse_blue.jpg" 
                                        SuppressPostBack="True"
                                        Enabled="True"
                                        BehaviorID="PanelExtender5">
                    </cc1:CollapsiblePanelExtender>
 
<asp:Panel ID="pnlContentOpenClosedQueries" runat="server" cssclass="collapsePanel" style="z-index: 103; left: 88px; position: absolute; top: 360px" Height="424px" Width="840px">
                               <asp:TextBox ID="txtOpenClosedQueriesExpanded" runat="server" Height="400px" Width="808px" style="z-index: 100; left: 8px; position: relative; top: 8px;" TextMode="MultiLine"></asp:TextBox>
 
                    </asp:Panel>
                    <asp:Panel ID="pnlContentOpenedClosedCredits" runat="server" cssclass="collapsePanel" style="z-index: 106; left: 88px; position: absolute; top: 360px" Height="424px" Width="840px">
                               <asp:TextBox ID="txtOpenedClosedCreditsExpanded" runat="server" Height="400px" Width="808px" style="z-index: 100; left: 8px; position: relative; top: 8px;" TextMode="MultiLine" CausesValidation="True"></asp:TextBox>
 
                    </asp:Panel>
                    <asp:Label ID="lblExplain2" runat="server" style="z-index: 109; left: 400px; position: absolute; top: 224px"></asp:Label>
                    <asp:Panel ID="pnlContentExplain" runat="server" cssclass="collapsePanel" style="z-index: 110; left: 88px; position: absolute; top: 360px" Height="424px" Width="840px">
                               <asp:TextBox ID="txtExplainExpanded" runat="server" Height="400px" Width="808px" style="z-index: 100; left: 8px; position: relative; top: 8px;" TextMode="MultiLine"></asp:TextBox>
 
                    </asp:Panel>
                    <asp:Panel ID="pnlContentValidate" runat="server" cssclass="collapsePanel" style="z-index: 113; left: 88px; position: absolute; top: 360px" Height="424px" Width="840px">
                               <asp:TextBox ID="txtValidateExpanded" runat="server" Height="400px" Width="808px" style="z-index: 100; left: 8px; position: relative; top: 8px;" TextMode="MultiLine"></asp:TextBox>
 
                    </asp:Panel>
                    <asp:Panel ID="pnlContentSummary" runat="server" cssclass="collapsePanel" style="z-index: 116; left: 88px; position: absolute; top: 360px" Height="424px" Width="840px">
                               <asp:TextBox ID="txtSummaryExpanded" runat="server" Height="400px" Width="808px" style="z-index: 100; left: 8px; position: relative; top: 8px;" TextMode="MultiLine"></asp:TextBox>
 
                    </asp:Panel>
                                  
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Asked On
2009-11-05 at 08:00:40ID24874855
Tags

AJAX .Net 2.0

Topics

Asynchronous Javascript and XML (AJAX)

,

JavaScript

,

.NET Framework 2.x

Participating Experts
1
Points
500
Comments
5

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Answers

 

by: jb1devPosted on 2009-11-05 at 11:20:19ID: 25752890

I notice that's the only panel which has
CausesValidation="True"
And the others don't. Could that be related?

 

by: AidenAPosted on 2009-11-05 at 11:42:53ID: 25753111

it was a good guess...i didn't see that, but unfortunately it didn't help

 

by: jb1devPosted on 2009-11-05 at 15:24:31ID: 25755229

Can we see the rendered html? Maybe there is some ID collision?
Is this used elsewhere
ImageControlID="imgOpenedClosedCredits"

 

by: AidenAPosted on 2009-11-09 at 03:25:12ID: 25774906

the rendered html? i guess maybe that's what is in the IE source page after i run the project? i think that page is too big to be honest to put everything in. there's 1300 lines of html in the html source. is there anything in particular you are looking for?

imgOpenedClosedCredits is only used in that line of code. it is just the image control used to display images/expand_blue.jpg and images/collapse_blue.jpg.

 

by: AidenAPosted on 2009-11-10 at 02:34:29ID: 25784035

Ok, i figured out what the problem was, and it was pretty stupid actually. At some stage i must have changed the id of the image control and somehow never noticed. I guess those kinds of things happen but still, i probably should have noticed that really.

thanks for your help anyway

Aiden

20120131-EE-VQP-002

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