Web Forms :: Unique Id Not Being Set Early Enough On User Control?
Jan 14, 2011
I have a UserControl (basically a custom menu) that has some properties on it that I store in the view state. My pages may have multiple instances of this control, so to keep the values unique in the ViewState I concat my names with the control's UniqueId. However, when the properties are set the UniqueId does not exist yet, it returns the control's ID, in the case below, mnuFormNote. So then later when they are read it doesn't return the correct value because later the UniqueID is set so it attempts to read from a different ViewState location.
So, my question is am I doing something wrong or just missing something? If not, is there a way around this?
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So when the page loads, and ShowEvents is set to False the property set actually does this: ViewState("mnuFormNoteShowEvents") = False. But later, when I attempt to Get the ShowEvents value it is doing this: ViewState("ctl00$ctl00$mstrContent$iepointMasterContent$dlForms$ctl00$dlStudentForms$ctl00$mnuFormNoteShowEvents"), which is nothing, so it returns the default of True. I need this value to be unique.
My users need to stay logged in for 1 day, so I used a persistent authentication cookie with an expiration of 1 day but it still times out after 20 minutes (which is the default timeout for the session, not the cookie).
An aspx page's Page_PreInit event happens before an component server control's (e.g. a TextBox) Init event. However it is possible to set a TextBox's Text property in Page_PreInit. I suppose this means the TextBox's Text is set before the TextBox is even initiated.
I have a webpage Default.aspx which generate the id for each new user after that the id will be subbmitted to database on button click on Default.aspx...
if onother user is also entering the same time the id will be the same ... till they press button on default.aspx
How to get rid of this issue...so that ... each user will be alloted the unique id ...
i m using the read write code to generate unique id ..
I use a form variable to sore USER_ID and pass it in various sub and function at the same page.Is form variable unique for each user? That is, if more than one user open this page at same time
I realize that user names are unique, but is there another identifier associated with the username? If there is, how do I find out what it is for the user who is currently logged in?
I have a user control, which is added dynamically, but I have noticed that when it is on the page and viewing the source that none of the controls within have been given unique ids. How do I give my user control and the controls within unique ids in order that I can use them in my events?
have an ObjectDataSource with the following configuration:
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And the 'Select' parameters will aid in making a 'unique' combination per user selection to populate the GridView it is bound to:The problem that is occurring is that GridView search results are indeed cached, but the cache is a little too public and shared between all users currently running the application. So if user1 creates a search that populates the GridView with 100 results based on some unique dates and CategoryID, and then user2 in a separate browser does another search with different dates and a different category
we have an ASP.net web application running on IIS7. We have multiple users, but we don't always know their password. Here's what we'd like to be able to do:
Login as some sort of administrator, be presented with our current list of users, click some sort of "Run as John Doe user", at which point we'd be able to see the application (or certain pages) as that user.We're looking to do this in a support/debugging capacity. I've looked into ASP.net's Impersonation, but that doesn't seem to apply here.
How generate the unique no. 1,2,3 and so on .... on button click of each new user ..
the code mentioned below is a readwrite coding in vb.net ...
but the problem is it generate the same id for different users on button click event... but i want the no. of times button clicked the new ids will be generated
I need to send a cookie to the my web site's visitors and receive them back for information. For example when machine1 visits my site if not set I set a cookie with "user1", for machine2 I set "user2" etc.
Actually I need to retrieve the cookie back from my log file, so I thought if I do this it will be saved to my log file.
Using vb.net/asp.net 2005 and SQL Server 2005:I have a unique constraint setup to prevent users from entering duplicate email addresses in my online system.When a user tries to edit an existing email to one that already exists (add a duplicate) it shows the following<ERROR>Cannot insert duplicate key row in ojbect "dbo.someTableName" with unique index.....The statement has been terminated This prevents the user from adding duplicates which is good but I would like to provide a more user friendly exception message and I do not want to show the table and field names to the user.
I don't think I understand fully how ASP.NET does inheritance of controls.I have a user control, ucBase, which has an asp.net label in the ascx file. Code behind references the label and it works fine during run time if the control is not a parent for another user parent.
If I have another user control, ucChild, inheriting from ucBase, the label in ucBase's code is always null. ucChild has no controls in its ascx fileThe server controls (like the label) needs to be declared in the ascx file and not created programmatically.What needs to be done for ucBase to see its own controls when it's a parent user control?
I've got a web site that has a master page and that master page (mpMaster that has a user control ucControl1) which has a sub user control (ucControl2), this user control has a property which accepts a value. Now, I have a page that uses the master page and on this page I have another user control (ucPageControl), I need to find a way of setting the value in ucControl2 from ucPageControl. Is this possible at all?
I am trying to assign user control from another user control ..first time its binding control successfully but when we refresh the data its giving error
saying "Object reference is not set an instance".
how to refresh data from another user control ...
My senerio below :
1 Aspx page
2. User control
calling usercontrol databinding method from aspx page but once it get refreshed ,not allowed to bind it again..
I need a way to create unique values for a property in my custom server control..
In this case I will have the poroperty called "Name" and I neeed the value of Name to be unique for each "instance" of the control...
So for instance if I have a page with more then one instance of the control, I dont want the value of the Name property for these instances to be allowed to be the same..
...to put it kind of simple, if I dont remember this incorrect, I want it to be sort of like the ID property..but with another name then ID.
All I would like to be able to do is include one user control within another! Is this possible? I have spent the last hour searching the internet and it seems that I can't find a single thing.
In classic ASP it would be something like: <!--#include file="EditProject.ascx"-->
I tried this but no luck!
Parser Error Message:
There can be only one 'control' directive.
Source Error:
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Line 1: <%@ Control Language="VB" AutoEventWireup="false" CodeFile="EditProject.ascx.vb"Line 2: Inherits="Controls_WebUserControl" %>Line 3: <form runat="server">