State Management :: Grab A List View's Page And Reset The List View When Returning From A Different Page
Apr 12, 2010
I'm having troubles remembering how to grab the list view's state, or page, so that when you leave the list, you can return to the list view page you left on. I have a data pager, and I have hyplerlinks for items in the list view that take you to a file upload or file delete page, and then returns to the list view. It returns to the list view's initial state (first page).
I am having a ASP.net application it having three pages ,page 1,page 2,page 3,when the user navigating between this pages I want to maintain the view state in page level after postbacks(i.e.) .If a user visits page 3, passing some query loads some data .then he moves to page 1 doing some entries .after that he once again moves to page 3 now I want to display the data previously available at the time he moves to page 1, same way I want to do to my three pages up to the user logging out.
I have four dropdowns in the first page and then a button which saves the selected values from the dropdown to a session state .
In the second page I do have previous button which comes to the first page. My problem is that the dropdown values are not getting preserved.
Here is my code for the First page
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using MyBusinessLayer; using MyDataLAyer;
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The problem is that I get the error object instance not set to an instance of an object
I want to do a list view that gathers information from a table based on the userid that the person is logged into the application. I am using the standard asp.net 3.5 login structure. I get the list to work, but I cannot get the UserID and only select from the view based on the userid.
how can i access the labels from a list view when i submit the page? for example i have a ListView with 5 items and each item contains a label calles Label1 and i want to read out each of this labels when i push the submit button
I am having two list view and the pager control inside the layout in page, two listview is having same data but two different layout what i want is if i changed the page of one listview and it must effect the other one
I have a created a form using a user control. One of the dropdownlists in the form is populated after the user makes a specific selection from another dropdownlist...i.e. a dependent dropdown list. This is triggered using the SelectedIndexChanged event handler on the controllling dropdownlist.
The dependent dropdownlist gets populated correctly, but when I choose one of the options and go to submit the form, the dependent dropdown list is reset and doesn't maintain the selection that was made.
The controlling dropdown list ID is "level". The dependent dropdown list ID is "EnrollmentSize".
The "EnrollmentSize" DDL only losses the option that was selected. The DDL is sitll populated with all the correct values. It only losses the option that was selected and goes back to the first option...i.e. "Select..."
The viewstate on the page is enabled and all the other form values are maintained. It is only happening with the EnrollmentSize ddl.
I've set breakpoints and tried debugging and I do see that the EnrollmentSize.SelectedValue is an empty string, but I don't see why or where that is happening in the button click event
I thought it had something to do with EnableViewState,but that is set to true and has no bearing. Everytime I try to submit the form, the "EnrollmentSize" DDL is reset and doesn't maintain the option that is selected.
I have a requirement in my application that, while saving the application, need to get all the value from drop down list and pass it to the view model. But application should not allow the user to select more than one item from drop down list manually, ie, only one value at a time. My view model is like ...
public class ListManagement { public IEnumerable<selectListItem> InactiveProduct { get; set; } public string[] InactiveProductSelected { get; set; } public IEnumerable<selectListItem> ActiveProduct { get; set; } }
Now I want to attach to the click-event of every single li-element, so that if the user clicks on a div-element, detailed product-informationen should be loaded asynchronously into a details-pane. I know how I can use jQuery to invoke an action-method ajax-style and also how to display the json-result which contains the product-details, BUT I have no idea, how I could attach the onclick-event to every single div, so that I can use the productId to load the details.
When I am creating Strongly Typed View I get lots of Classes in View Data Drop down. Classes like Automapper, ninject, Interface..., latebound... Due this its very hard to find my project classes. Is there any way to restrict dropdown to only display my project classes?
i have the following problem concerning the index::
my source code::
[Code]...
the problem is appeared when i have added the pager to my list view ,,i have out of range for index exception ... how to determine the page iam in and specify the right index either i use list view or grid view or other such controls..
I'm trying to display a list of images in the View. I have a list of URLs (List<string>) that I'm passing from the Controller using ViewData["imageURLs"], but nowI have no idea how to generate and display them?
I am working in a MVC application. I want to list html control names of one view in another view.I know it is possible to list out server control names as given in the url http://dotnetguts.blogspot.com/2008/11/finding-all-controls-on-page-in-aspnet.htmlo b0But want to know is it possible to list HTML control names also ?
I'm building an ASP.NET MVC site where I want one of the Views I return to be automatically scroll to a certain point.The part of the site where I want this to occur works sort of like a forum - there are "threads" that contain "posts". A user can either browse to the whole paginated thread or can browse to a specific post, using its ID. When a user browses to a specific post, I want to show the regular thread interface, then browse to the page that the post is on and scroll down to the post.
Is it possible to somehow automatically scroll down to a certain point when returning a View from an action in an ASP.NET MVC site? If so, how do I do this?NOTE: One solution to this problem that I've found is how Stack Overflow and the other Stack Exchange sites do it: each answer to a question can be linked to by adding #ID to the URL. If it's impossible to automatically scroll down when returning a View, I would implement this instead, but I don't understand how to use such an approach when there are multiple pages and the post in question isn't on the current page.UPDATE:Based on Chris' answer, I'm currently planning to implement it with the URL looking like this: example.com/forum/[ForumID]/thread/[ThreadID]/post/[PostID]#[PostID]. In my Action, I figure out what page of the Thread the Post is on, and then I return all the Posts from that page to the View.However, I noticed something special in how Stack Overflow solves this problem. Try going to: http://meta.stackoverflow.com/questions/57170 - it ends up sending you to http://meta.stackoverflow.com/questions/57155/gravatar-bugs-and-improvements-in-chat/57170#57170.
i want to see the sales in the grid view based on the month selected from drop down list. Ex: when I select June 2010 from the ddl box, the sales for that month are correctly displayed in the grid view. I go to page 4 to look at some sales there and then switch the month to August 2010 to see sales for that month instead. Here is the problem. When I switch the month, it show August 2010 sales, but stays in page 4 instead of going back/resetting back to page 1 of August 2010 sales.
How do I reset the grid view page back to the first page of August 2010 sales?
I am fairly new to ASP. If I have missed an imp. detail in this post, let me know and I will get that info. out there.
I am trying to create an MVC List View that can be filtered by the value selected from a drop down list.
Selecting a value should repost the page ... Since there is no concept of view state data I am having some issues with this ... I can get the repost to take place but my drop down resets and I am not able to get the value that was selected.
ASSET CONTROLLER:
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I have tried many of the posts that refer to setting up drop down lists but can't set them up in the content because this is a List View.
i have one method which save datatable in viewstate.i am calling this method in. page_load2. Prerenderthe page was every heavy,i did tracing of page i found due to calling of method from preprnder it doubled the viewstate sizewhat was the reseon behind this.
I know the basic of view state. But I dont understand the functionality of view state at a control. For example, a texbox has a property view state. what is the purpose ? what it wiil act for true or false value.
*1* report views -- 4 options -- NOT in updatepanel *2* pagination views -- 2 options -- IS in updatepanel
The situation goes as follows: Refresh WORKS in default setting but when I select *2* radio button options and refresh the page renders the state that the (1) was entered in.
I am using the session variable to hold the Pagination Viewing option but during page states, I've noticed that when a 2nd option is selected of *2* radio buttons (doesn't matter of 1st or 2nd option was initially selected) that during debugging mode the step over corrects the issue but not the right table viewing. Upon entering Page_Init selection selection index of radio button list returns to 1st option.
