RE: How to detect when a dynamically added control is clicked
From: William Main (wmain_at_newsgroups.nospam)
Date: 07/12/04
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Date: Sun, 11 Jul 2004 17:52:05 -0700
Also have a look at the AddHandler method
--
William Main
"William Main" wrote:
> take a look at Microsoft Knowledge Base Article - 317515
> HOW TO: Dynamically Create Controls in ASP.NET with Visual Basic .NET
>
> --
> William Main
>
>
> "who be dat?" wrote:
>
> > I need some help here. I'm creating a list on a page where the list is
> > created from a dataset with two tables linked with a datarelation. The
> > first table is a list of groups while the second table is a list of items in
> > that group. I want to show these items in what would basically look a lot
> > like a tree view. I decided to just show everything in a placeholder
> > control on an aspx form. First, I display a groupname from the first table
> > by creating a literalcontrol. Then, under the groupname I display all the
> > items that go along with that group in a list. For each group, I repeat
> > this (see code below). All this is done in a page load event. Thing is,
> > each item in a group's list is a linkbutton. I need to be able to detect
> > when a given linkbutton is clicked, put an item assigned in the linkbutton's
> > commandargument property in a session object, then redirect the browser to
> > another page. Thing is, I am unable to execute code when one of these
> > linkbuttons are clicked. Any ideas on how I can do this? If this isn't the
> > best way to do this, please let me know how. Some example code or a link to
> > a website with a sample and code would be great. I tried to think of a way
> > to do this by having a datagrid with a datalist control in each cell where
> > the groupname would be listed in the cell and the items would show up in the
> > datalist as linkbuttons. I couldn't quite get it to work. Below is the
> > code I'm currently using to attempt this. The controls are inserted into a
> > placeholder control in the form. I didn't include the aspx code as it's
> > fairly straight forward. If it's needed, just let me know. Thanks!!
> >
> > Chris Smith
> >
> > begin code -----
> >
> > ....code snipped which pulls data from SQL Server tables and stores them in
> > datatables....
> > dsForum.Relations.Add("groupid_relation", _
> >
> >
> > dsForum.Tables("Grouplist").Columns(0), _
> >
> >
> > dsForum.Tables("ForumList").Columns(0))
> >
> > For Each rowGroup In dsForum.Tables("groupList").Rows
> >
> > plhPlaceHolder.Controls.Add(New LiteralControl("<P>"))
> >
> > plhPlaceHolder.Controls.Add(New LiteralControl(CStr(rowGroup(1))))
> >
> > For Each rowForum In rowGroup.GetChildRows("Groupid_relation")
> >
> > Dim link As New LinkButton
> >
> > link.Text = Trim(CStr(rowForum(2)))
> >
> > link.CommandArgument = CStr(rowForum(1))
> >
> > plhPlaceHolder.Controls.Add(New LiteralControl("<BR><LI>"))
> >
> > plhPlaceHolder.Controls.Add(link)
> >
> > Next
> >
> > plhPlaceHolder.Controls.Add(New LiteralControl("</P>"))
> >
> > Next
> >
> >
> >
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