Periodically ViewState verification fail - ASP.NET Discussion Boards

hi! I have a user control, which consists of a label and a text box. I want to make validation of my user control with standard asp.net validators. I write the following:

[System.Web.UI.ValidationPropertyAttribute("TextBoxValidation")]
public class MyUserControl : System.Web.UI.UserControl
{
public string TextBoxValidation
{
get {}
set {}
}

The question is:

What should be written in the TextBoxValidation setter and getter?

Thanks in advance!

When i try to connect to sql express database in the project i am getting this error. can anyone help me?

An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)

Thanks annd regards
Hari

Have you checked the possible cause that is mentioned in the error message?

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where can i correct that. i am new to sql express

Open the Configuration Manager and enable the protocol under Network Configuration.

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Hi to all,

I'm trying to invoke a method in ASP from JScript page (OnClick or anything similar to it) on the same related .aspx page with no success.

can someone please explain me how something like that can be done?

I am not sure about the method but you can fire the event from java script. by using do_postback method.

Mad | :mad:

Sathik

Hi I hope you can help me with this problem:

Checking the event viewer of a Web Application I have noticed that periodically happens a ViewState Verification fail. It happens several times by day on a diferent .aspx pages. Sometimes it causes an error and the user loses his data, but other times apparently user can continue using the application.

This is the event registered ( I have changed the computer name and the path data, but it's not importante for the question)

COMPUTER_NAME	Event code: 4009  <br />
Event message: Viewstate verification failed.<br />
Reason: The viewstate supplied failed integrity check.<br />
<br />
Event time: 10/8/2006 6:54:00 PM  <br />
Event time (UTC): 10/8/2006 4:54:00 PM  <br />
Event ID: 78a9d00b907b4edab1ac37665fa3175c  <br />
Event sequence: 447 <br />
<br />
Event occurrence: 2  Event detail code: 50203    <br />
Application information:      <br />
Application domain: /LM/W3SVC/250184202/Root/ApplicationPath-1-128047877472787699      <br />
Trust level: FullApplication <br />
Virtual Path: /ApplicationName     <br />
Application Path: D:\Directory\www\ ApplicationName \   <br />
Machine name: COMPUTER_NAME<br />
Process information:      <br />
Process ID: 2916<br />
Process name: w3wp.exeAccount name: NT AUTHORITY\NETWORK SERVICE<br />
Request information:      <br />
Request URL: http://ApplicationName /ApplicationForm.aspx      <br />
Request path: ApplicationName /ApplicationForm.aspx      <br />
User host address: 80.66.205.47      <br />
User: USER@application.com      <br />
Is authenticated: True      <br />
Authentication Type: Custom      <br />
Thread account name: NT AUTHORITY\NETWORK SERVICE    <br />
ViewStateException information:      <br />
Exception message: Invalid viewstate.      <br />
Client IP: 80.98.185.47      <br />
Port: 16528  <br />
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.7) Gecko/20060909 Firefox/1.5.0.7  <br />
PersistedState: ML0cSytZ3NNxTv6HMBICK (… Here appears lines and lines of the viewstate dumped) … LecAy+p3fFVSdi7LZEE=      <br />
Referer: http://ApplicationName /ApplicationForm.aspx     <br />
Path: ApplicationName/ApplicationForm.aspx aspx  <br />
Custom event details: <br />
10/8/2006	6:01:15 PM	ASP.NET 2.0.50727.0	<br />
Information	Web Event 	1316	N/A

Any help would be appreciated

Thanks

hi ,

I have a database table with 3 columns

table1:

eid ename parentid
0 root 0
1 child1 0
2 child2 0
3 gchild1 1
4 gchild2 1
5 gchild3 2
6 gchild4 2
7 ggchild1 3
.... and so on.

now i want to populate the ASP.NET tree view with the table entries by querying the eids and parentids.
i am using ASP.NET 1.1. so i am using microsoft web controls.

TreeView:

Root
---child1
------gchild1
----------ggchild1
------gchild2
---child2
------gchild3
------gchild4
and so on.....

Can some one point to some logic or to some document.

i am using ASP.NET and C#

I'll try to make this as simple as possible, it's just to give you some idea...

Table "TreeItems":
item_id, item_parent, item_caption, item_url

Main Code:
[Run Query] SELECT * FROM TreeItems WHERE IsNull(item_parent) OR IsEmpty(item_parent)
[Loop ResultSet]
[Create Parent Node]
RecursiveScan(thisnode, item_id);
[Add Parent Node to Treeview]
[End Loop ResultSet]

RecursiveScan (Parent_Node, ParentId)
{
[Run Query] SELECT * FROM TreeItems WHERE item_parent = @ParentId
[Loop ResultSet]
[Create Child Node]
RecursiveAddNodes(thisnode, item_id);
[Add Child Node to Parent]
[End Loop ResultSet]
}

of course you will have to adapt to your custom table settings and to the treeview control you are using, I've never used microsoft web controls before.

Sir,

There is a button in the form and the focus is already set on the button.There are few lines of code written on button click.Now the problem is if u press the enter key I don't want to execute the code written on button click.

Please help.

Thanks

Sir,
How can i delete the history programically in vb.net 1.1.
please help.

plzzzzzzzzzz help me
In my project nearly 10 to 12 datagrids are there
in datagrid Serial Number binding from the database
based on serial number i have delete the row
suppose there are 5 records if i delete the 3 record the 4th record should swap to 3rd and 5th record to 4th it should update in the database if u know the solution plz help me in swaaping the records in datagrid and database

shivamala

-- modified at 7:31 Monday 9th October, 2006

Can you explain your question?

Mad | :mad:

Sathik

i hav to develop a web appliction thn i want to store DataBase in Sql Server2005. in this task i stored DataBase sucessfully.now i want to create a Xml file abut the entered records and whn it'll created thn i want to link this XML into my html pages and show the database value in html page.so wat can i do for tht particular task in asp.net2005. if someone help into this particular thn send me.bcoz if i'll get it thn my project is too much complete.

thnx

Smile | :)

smile a lots its costs nothing so keep smiling.

deepak

In ASP.NET 1.1. I am having a template checkbox column in a dynamically created datagrid. Inorder to maintain the viewstate, i initialize the datagrid in Page_Init itself and modify the datagrid through Ajax Function. The Ajax function will modify the enabled property of checkboxes. After AJAX method is invoked, in next Postback, i'm able to get the checked property of checkbox from Viewstate but not able to get the enabled property from viewstate. But if i don't perform Ajax Modification, in postback i'm able to get both enabled and checked property.

Kindly provide any idea regarding why enabled property is not in viewstate after using AJAX Function

Maha

-- modified at 7:15 Monday 9th October, 2006

Hi,

I know of three ways to inject some strings into an aspx:

- <%= which is the old ASP way
- <%# which is used in databinding expressions
- <%$ which can be used to evaluate certain expressions such as AppSettings:MySettings or ConnectionStrings:MyConnectionString (assuming that MySettings and MyConnectionString are defined in web.config in the appropriate sections).

So, are there any more? I'm trying to inject the value of a const variable into the DataNavigateUrlFormatString property of an HyperLinkColumn, if I use <%# it complains that the template doesn't support DataBinding, if I use <%= it just gets rendered as is (i.e. the name of the constant, not the value of it), and if I use <%$ it complains that the constant is not on the form "Expression:Value" (and I REALLY don't want to write a custom Expression builder for injecting a single constant into an aspx page...).

What am I missing? Any help would be very much appreciated Smile | :)

Regards,
Daniel

Hi Everyone,

I am doing an web application. Here I need some help. I am not able to swap two rows in a grid.
I have done for a table. In web application for a grid it is difficult for me.Help from anyone is appreciated.
Thanks in advance.

Thanks and Regards,
Libran

Problem with Context User when I authenticate users in the same thread of a process

Hi, I hope you can help me with this problem, (in spite of my english! Smile | :)

I use CustomIdentity to authenticate the users in my webapp and read some information (Language, ID....) of the context user. It works fine if users use different browser instances for access the webapp, but if they use different threads of the same process, context user of these threads are mixed.

Some example

1) Alice opens iexplorer and connect to the webapp. She authenticates herself with her user 'UserAlice' and goes into. At this moment exist one process (iexplorer.exe) running

2) Alice open another iexplorer and connect to the webapp. She authenticates herself with another user that she managed 'UserAlice2' and goes into. At this moment exists two process (iexplorer.exe of step 1 and this one). These users can works fine at the same time

3) Alice uses 'open new window' command from the browser that she opened at step 2. (At this moment exist two process, not three) If she connect to the webapp and authenticates herself with another user that she managed 'UserAlice3' , the context user of the step 2 will be replaced for this user, and, in spite of the tree users connected (UserAlice,UserAlice2 and UserAlice3) at the tree different window browser, we have only two users (UserAlice on the first window and UserAlice2 at the others)

I need that people can manage diferent users on the same machine, but I can't control that they use new browsers spite of 'new window' commands. Besides, I need that they connect to the webapp from a link in a mail, and this action causes always that iexplorer starts a new thread, not a new process....

I use this code to authenticate users:

CustomIdentity userIdentity = new CustomIdentity(user.Name, 1, true, false, student.Surname + " " + student.Name, student.Email, user.Language, "");<br />
ArrayList roles = User.GetRoles();<br />
CustomPrincipal principal = new CustomPrincipal(userIdentity, roles);<br />
Context.User = principal;

Thanks in advance, any help would be appreciated

Hi, I am Ravindra.Currently learning ASP.net.
In my project I came across to develop a Registration form, It contains two textboxes:

one for :To enter Email addr,
other to: confirm the Email addr.

I want to make the First textBox property to set in such a way that it does not allow "the user to copy the entered email address (ie in textBox1)to another textbox(textBox2)".
If anybody know please help................
Ravindra

First I have to say that don't really see any reason for this. The double entering of values is a service to the user to help verify that the data is correctly entered. If the users don't want this help, they can circumvent it on their own risk. It might feel awkward for the user to enter the same data twice, but it's all for their benefit. If you try to force them to use this feature, it will feel even more awkward. I think that it's more effective to try to educate the users of the reason for this feature, instead of forcing it upon them.

It might be possible to prohibit copying and pasting, but it's not that easy to make it work in all browsers, as it's not really a browser function but rather a system function. There is no simple setting that allows you to control copying and pasting in a field.

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Hi

The following error was encountered when i tried to retrieve a Class file of c# in One namespace(of the same Solution) from the UI Webform of different Namespace(Of the same Solution).Thats retrieving data to UI from the DataAccess Layer.

"Could not load type App1.Web1.DAProg1.Class1 from assembly DAProg1, Version=1.0.2460.20572, Culture=neutral, PublicKeyToken=null.
"

What is this error and how can i rectify it?
Kindly help me

-- modified at 5:01 Monday 9th October, 2006

import the namespace which you are using and use the class in that namespace. let me know the result please.

Sathik

HI
How can i calculate datagrid Row

I want calculate the total row of a datagrid

EX :
------
----------------------------
ID Name Marks
----------------------------
1 aaa 200

2 bbb 250

3 ccc 200
----------------------------
Total 650

THX

asdfasdfasdfasdfasdfasdfasdfasdfasdfasdf