473,395 Members | 1,702 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,395 software developers and data experts.

LoadViewState: What exactly does it do? Why does it go wrong? How can it be fixed?


Hi, I've been working with TreeView for ASP.NET. I've had several puzzling
difficulties with it. For example I can write an application that works
fine programmatically adding TreeNode objects to a TreeView. If I try to
derive a class as follows

public class MyTreeNode : TreeNode
{

}

and use the derived class in place of the TreeNode, things do not work.
There is an error in LoadViewState. Why should a derived class make such a
difference?

What I want to do is derive a useful editable treenode.

Thanks in advance.

David
--
Be Positive Every Day
Apr 7 '06 #1
0 947

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

Similar topics

0
by: Christian | last post by:
Hi, I have a Webform with 1 submit button and 1 label code behind : public class MainWebForm: System.Web.UI.Page { protected System.Web.UI.WebControls.Label lblFName; protected override...
2
by: SSW | last post by:
Hi: In aspx.cs page i had written the code below. I have a button control and only create TextBox Control dynamically. LoadViewState is Never called. But when we put datagrid/DataList it...
5
by: William F. Robertson, Jr. | last post by:
I am having difficulty in diagnosing this problem and was throwing it out for some other eyes. I have derived my own Page class from System.Web.UI.Page and have overridden the LoadViewState...
2
by: Devin Fensterheim | last post by:
Does anyone know of an issue with a control's viewstate not persisting when dynamically adding custom controls to a web form using AddAt? If a control is added to an HTML form directly using the...
0
by: Ferret | last post by:
I've found what seems to be a nasty bug in the DataGrid and Repeater classes. If CreateChildControls gets called before LoadViewState, ViewState fails to map and you end up with nothing on a...
0
by: J. | last post by:
Hello, I'm trying to override the LoadViewState-method of a simple page using the .NET Framework 2.0. However, the LoadViewState-method in the code below never gets executed. The...
3
by: Peter Rilling | last post by:
Okay, I am probably missing something simple so here is my problem. I have a page. On this page I have a usercontrol. On this user control I have another usercontrol. On each usercontrol I...
0
by: Vishal | last post by:
Hello, I have overrided the LoadViewState function in my webform. However when the page postsback the function is never called. Here is how I overrided it. Protected Overloads Sub...
0
by: Anand Saha | last post by:
In case you are creating your own control dynamically and need to re-create them on LoadViewState, only to discover that this function is not being called by the framework, reason and...
0
by: Charles Arthur | last post by:
How do i turn on java script on a villaon, callus and itel keypad mobile phone
0
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...
0
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
0
BarryA
by: BarryA | last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
1
by: nemocccc | last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
0
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...
0
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...
0
Oralloy
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,...
0
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each...

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.