StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

POASP.NET - FileUpload with PostBack Trigger
primarykey
Id
2788314
data
AcceptedAnswerId
0
AnswerCount
4
ClosedDate
CommentCount
5
CommunityOwnedDate
CreationDate
2010-05-07T11:57:08.233
FavoriteCount
0
LastActivityDate
2014-01-20T08:07:19.677
LastEditDate
LastEditorUserId
0
OwnerUserId
30512
ParentId
0
PostTypeId
1
Score
3
ViewCount
8800
LastEditorDisplayName
text
Body
<p>I have an UpdatePanel which has an upload control and a button to upload. The button is set as a trigger, but the event handler for the button fails to execute on the first PostBack. </p> <p>My ASPX code is:</p> <pre><code><asp:UpdatePanel ID="updPages" runat="server" UpdateMode="Conditional"> <ContentTemplate> <div class="tabs"> <ul> <li><asp:LinkButton ID="lnkContentsPages" runat="server" OnClick="updateContents" CommandArgument="pages">Pages</asp:LinkButton></li> <%-- these tabs change the ActiveViewIndex to show a different UserControl --%> <li><asp:LinkButton ID="lnkContentsImages" runat="server" OnClick="updateContents" CommandArgument="images">Images</asp:LinkButton></li> </ul> <div class="tabbedContent"> <asp:MultiView runat="server" ID="mltContentsInner" ActiveViewIndex="0"> <asp:View ID="viwContentsImages" runat="server"> // ajax usercontrol for a list of images - works fine with ajax <fieldset> <legend>Upload New</legend> <div class="formRow"> <asp:Label ID="lblFile" runat="server" Text="Filename" AssociatedControlID="uplFile" /> <asp:FileUpload ID="uplFile" runat="server" /> </div> <div class="formRow"> <asp:Label ID="lblImageDescription" runat="server" Text="Description" AssociatedControlID="txtImageDescription" /> <asp:TextBox runat="server" ID="txtImageDescription" /> </div> <asp:Button ID="btnUpload" runat="server" Text="Upload" CssClass="c3button btnUpload" CausesValidation="false" OnClick="btnUpload_Click" /> </fieldset> </asp:View> <asp:View ID="viwContentsPages" runat="server"> // ajax usercontrol - works fine with ajax </asp:View> </asp:MultiView> </div> </div> </ContentTemplate> <Triggers> <asp:PostBackTrigger ControlID="btnUpload" /> </Triggers> </asp:UpdatePanel> </code></pre> <p>The button works without fail on the second and subsequent times, just not the first. Is there any reason for this?</p>
Tags
<asp.net><ajax><updatepanel><postback>
Title
ASP.NET - FileUpload with PostBack Trigger
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. This table or related slice is empty.
UserOwnerUserId
1. USEchilon
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
  singulars
  PostTypePostTypeId
  PTAnswer
2. PO
  singulars
  PostTypePostTypeId
  PTAnswer
3. PO
  singulars
  PostTypePostTypeId
  PTAnswer
VotesPostIdCreationDate
1. VO
  singulars
  PostPostId
  POASP.NET - FileUpload with PostBack Trigger
  UserUserId
  USEchilon
  VoteTypeVoteTypeId
  VTBountyStart
2. VO
  singulars
  PostPostId
  POASP.NET - FileUpload with PostBack Trigger
  UserUserId
  This table or related slice is empty.
  VoteTypeVoteTypeId
  VTUpMod
3. VO
  singulars
  PostPostId
  POASP.NET - FileUpload with PostBack Trigger
  UserUserId
  This table or related slice is empty.
  VoteTypeVoteTypeId
  VTUpMod
CommentsPostId

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.