473,388 Members | 868 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,388 software developers and data experts.

Datalist Dynamic Template Loading Problem

I am failry new to asp.net but have been coding in general for a while.

I have a datalist whos templates are built on the fly.
In the Page_Init sub, based on a certain value, certain external
controls are assigned as the ItemTemplate and the EditTemplate.

1)If I only assign these templates if its not a post back, the datalist
is blank when I click on the edit button in the datalist.

2) If I let the page_init assign these templates everytime there is a
postback, the edit datalist renders correctly (a few drop downs and a
But when I click my update button, I then try to a FindControl on my
datalist with a control I know is in the edit template but it gives me
this error:"Object reference not set to an instance of an object. "

Has anyone come across this?

Thanks in advanced!

Nov 19 '05 #1
3 1609
> 1)If I only assign these templates if its not a post back, the
datalist is blank when I click on the edit button in the datalist.

You need to recreate any and all dynamic controls upon every postback. You
typically do this inside of CreateChildControls (a virtual from the Control
base class). If you recreate the controls properly, then it will behave as
if they were done statically in the ASPX file.


Nov 19 '05 #2
If any one else is interested, I found this article:

" When the FormView's EditItemTemplate is dynamically loaded using
LoadTemplate, the attached data source control is passed zero
parameters when updating the record."

According to the doc, this problem is:

"Status: Closed
Resolution: Postponed"

Nov 19 '05 #3
Thanks Brock, I'll give it a shot.
I did not see your reply before I posted my previous reply.

Thanks Again

Nov 19 '05 #4

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

by: Fabrizio | last post by:
Hi, I'm trying to create a page with a datalist that loads from a template the ItemTemplate, which contains a linkbutton that should have the commandname = "edit" But when I click on the link...
by: Yan Wang | last post by:
Hi!: I encounter this problem when I do some tests: I have one user control with datalist in it. The ID for datalist is "dlTest". Then in this control code behind class, I declare a protected...
by: Scott Schluer | last post by:
Hello, I've got myself a small problem and I'm hoping someone can help. I have a DataList called dlProducts (displays products from a database). Within the <ItemTemplate> container of the...
by: Bharat | last post by:
Hi Folks, Suppose I have two link button on a page (say lnkBtn1 and lnkBtn2). On the click event of the lnkbtn1 I have to add a dynamically created control. And On the click event of the lnkBtn2 I...
by: Stimp | last post by:
I have a datalist that outputs a link to a picture in each ItemTemplate: e.g. <asp:DataList id="DataList1" ...etc> <ItemTemplate> <a href='Pic.aspx?pic=somenumber'>picture</a> </ItemTemplate>...
by: Ed Chiu | last post by:
Hi, I have the following item template in a datalist: <asp:LinkButton id="lnkAction" runat="server" CommandName="Action" cssClass="TabMenu"> <%# Container.DataItem("Title") %>...
by: Isz | last post by:
PROBLEM: This problem is related to the postback and handling events correctly. BACKGROUND: I have a datalist which acts as a tabbes list with horizontal layout. This datalist is bound to a...
by: Mirek Endys | last post by:
I have DataList as part of DataList item. DataList in DataList. The parent DataList working well including Edit command, that shows Edit template and correctly bind the data into edit template...
by: =?Utf-8?B?Y2luZHk=?= | last post by:
I have am dynamically loading a web user control based on the click of a tab strip I load the default control for the first tab in the page load event after checking page is not postback. After...
by: taylorcarr | last post by:
A Canon printer is a smart device known for being advanced, efficient, and reliable. It is designed for home, office, and hybrid workspace use and can also be used for a variety of purposes. However,...
by: ryjfgjl | last post by:
If we have dozens or hundreds of excel to import into the database, if we use the excel import function provided by database editors such as navicat, it will be extremely tedious and time-consuming...
by: ryjfgjl | last post by:
In our work, we often receive Excel tables with data in the same format. If we want to analyze these data, it can be difficult to analyze them because the data is spread across multiple Excel files...
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers,...
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.