Hi Madar,
Have you had a chance to look at the suggestions in my last reply or have
you got any further progress on this question. If there're any thing else
we can help, please feel free to post here.
Thanks,
Steven Cheng
Microsoft Online Support
Get Secure!
www.microsoft.com/security
(This posting is provided "AS IS", with no warranties, and confers no
rights.)
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| From: (e-mail address removed) (Steven Cheng[MSFT])
| Organization: Microsoft
| Date: Wed, 20 Jul 2005 03:40:36 GMT
| Subject: RE: Resolving datasource expression
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| Hi Madar,
|
| Welcome to ASPNET newsgroup.
| From your description and the code snippet you provided, you're
developing
| a custom ASP.NET template databound control and the control will display
| some certain data which has parent/children relations. You're define two
| different template and you're wondering how to retrieve the template
type
| at runime from the binding data,yes?
|
| Based on my understanding on custom template databound control, the
| DataItem is just a propety of the "Container" , and the Container is the
| custom class we defined in our web control's code. During our custom
| control's creating child control period, we will loop through the
| datasource(if databinding ) and instance such a "Container" class object
| and use the proper template (ITemplate) to InstantiateIn it. So at this
| time, it's our code logic to determine which template to use and if you
| want to store this info for later use( in databinding), we can define
| another Property in our Container class. For example, we define a
ItemType
| field so that we can later retrieving through
|
| DataBinder.Eval(Container, "ItemType")
|
| Not sure whether you're developing your cusom control following the guide
| in the below msdn sample referenece:
|
| #Templated Data-Bound Control Sample
|
http://msdn.microsoft.com/library/en-us/cpguide/html/cpcontemplateddatabound
| controlsample.asp?frame=true
|
| the public class TemplatedListItem : TableRow, INamingContainer {
|
| in the example is just the custom "Container" class I mentioned earlier,
| you can have a detailed look in it to see whether it can provide any
clues.
|
| In addition, for your databinding scenario, we can also considering other
| approachs such as hierarchical databiding(nested databound controls).
Here
| are some related tech articles discussing on this:
|
| #Hierarchical Data Binding in ASP.NET
|
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnaspp/html
| /aspn-hierdatabinding.asp
|
| Hope also helps. Thanks,
|
| Steven Cheng
| Microsoft Online Support
|
| Get Secure!
www.microsoft.com/security
| (This posting is provided "AS IS", with no warranties, and confers no
| rights.)
|
|
|
|
|
|
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| | Subject: Resolving datasource expression
| | Date: Tue, 19 Jul 2005 08:07:02 -0700
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| |
| | Hi,
| |
| | I have templated databound custom control similar to repeater.
| |
| | <Display:Tree id="DB" runat="server">
| | <Root><%# DataBinder.Eval(Container.DataItem,"Node") %><br></Root>
| | <Leaves><%# DataBinder.Eval(Container.DataItem,"Subnode") %>, </Leaves>
| | </Display:Tree>
| |
| | I need display only one Node and all its subnodes then line break etc.
| E.g.
| |
| | Node1
| | Subnnode11, Subnode12, ... Subnode1N
| | Node2
| | Subnnode21, Subnode22, ... Subnode2N
| | ...
| |
| | I would like to do it so : in control code I will check whether
DataItem
| | from DataSource is from <Root> element and if yes I will display it
only
| | once. But I do not know how to check whether DataItem is from <Root> or
| from
| | <Leaves>.
| |
| | Or will you suggest me other approach ?
| |
| | I want to do it so becaause HTML formatting must be on .aspx not in
code
| | (.cs).
| |
|
|
