i have used ajax , but i am not very clear of its concepts
i just knw that it prevents full post back
1) frm where can i get a very clear concept for the use and purpose of ajax and how its to be used
2) i have a textbox with autocomplete extender and a button (button1)
button1 is in the updatepanel as i wanted tp prevent post back when i click button the datafrom the textbox is inserted in grid as the click event gave full post back i used updatepanel , now its wrking fine but the prblm is when i enter new datain textbox and fetech the deatils frm database full postback occurs i tried to put the autocomplete etext box in a update panel but its giving error.i need toprevent this post back
3) on the same button click at the end of the click process(ie after adding to grid)i need the autocomplete extetender text box shld be blank
I have a ajaxPopupExtender in where I placed a login control. But when I login i get a full postback. I've tried to put it all in an updatepanel but that didnt help.
What I want is for the client to login from the popup Window, in case of login error I want to show that error message in popup (still visible). But if the login in successful I can in codebehind do a full postback.
As of now, even when error is presented the page is doing a full postback and the popupExtender with login control is collapsed.
on my page I have a GridView that displays a bunch of people from different parts of the world. I display their names, email addresses, etc. I also wanted to display the local time of their location but I didn't want this to be a snap shot of the time when the page gets rendered so I decided to use JavaScript to display the time and have the clock keep ticking.
I found a nice jQuery plug-in called jClock which is very simple to use and implement. I simply place a <span class="timeZoneID"></span> and it works like a clock -- except if I place my GridView in an UpdatePanel.
It wasn't working and I kept troubleshooting to no avail. I thought it was the GridView's TemplateField somehow throwing some junk in there. Then I tried removing UpdatePanel and everything started working fine.
Why is UpdatePanel preventing this JavaScript from functioning?
Here is what I'm trying to do: Click a button on my page, which in turn makes (2) things happen:Display a ModalPopup to prevent the user from pressing any buttons or changing valuesCall my code behind method, hiding the ModalPopup when finished Here is the ASP markup:
So I have a button on form that is supposed to execute some code-behind on a click event. To this button I also connected a Modal Popup Extender, which once you click OK, it goes away. What doesn't happen (and it should) is btnSendContactForm_Click never gets called.
Using the OnOkScript didn't help me either. I have tried setting the OnOkScript property of the extender, by calling a javascript that simulates the button click on the send button, but that only re-calls the modal pop extender, and a never-ending loop results everytime you click OK.
I'm using the "cache tecnique" to prevent multiple logins. Reading in this forum I have read the following code:
Global.asax
[Code]....
Login.aspx [Code]...This code works fine, If the user is already logged the second login is not permitted. But....
But if I make the logout (destroing all my session variables) and I try to login a second time... it's not possible, I read that the user is already logged!!I have also tried to clear the cache after the logout but nothing changs, even if it is illogic because the code must work even if I don't do the log off...
there any way where i can make a page only accessible through a RedirectToAction? It's a bit dumb of a question given a redirect writes a URL.. I know it might sound a bit silly, but i really don't like the fact i have to be 'forced' to create a partial view to be able to make the page i want to redirect to. What i want to do is quite simply, after deleting a user account, redirecting to a page where it says, account deleted (with a bunch of other stuff), so its quite a simple task. I have no problem making a partial view here and there, but if i want to make many pages unaccessible, i think i would have to make most of the website in partial views haha. Maybe i'm getting it wrong though, i've read a couple of posts about it, including Phil Haack's ->http://haacked.com/archive/2009/11/18/aspnetmvc2-render-action.aspx But i'm still very confused about this subject,
This involves using the Membership provider to add a comment to users server side records when they log in and out, and then confirming that when a cookie is used to authenticate, that the user hasn't logged out. This makes perfect sense to me. Where this starts to fall apart is that we do not currently use a membership provider, and so it seems like I face reimplementing all our authentication code to use a membership provider. We currently check authentication in a controller, and make a call to FormsAuthentication.SetAuthCookie() once we know the user exists. It would be a lot of work to force a membership provider in.
Is all this work really neccesary. Can I roll my own key value store of cookie values to logged in users and just make sure I clear this when a user hits the logout button. If this seems unsafe is there a way of implementing a minimal Membership provider in order to make these checks without handing off all authentication code to it?
I guess my main problem here is that we decided a long time ago that the membership provider model doesnt fit with the model we use for locking and unlocking accounts, and chose not to use it. Now we find that the MS recommendations specifically mention a membership provider, and as this is security I need to be sure that not using it as they recommend isn't going to cause troubles.
How to prevent the new line character at the beginning of the text entering in a multiline text box? Now, I already trimmed the white space at the beginning of the text. but i can't prevent the new line character that has to be occurred by entering the enter key on the most beginning of the text box.
I am relatively new to ASP.NET and have searched the Internet to find guidance in preventing caching of web pages (in the latest versions of IE, Firefox, Chrome and Safari). Based on my search, I found a lot of conflicting/confusing info. As best as I can tell, it appears that I need to add the following 3 lines to the <head> section of my .aspx files:
[Code]....
if the aforementioned lines are correct and if all 3 lines are necessary? I have tried using different combinations of the 3 lines, but I get conflicting results (i.e., sometimes the page is cached and sometimes it's not).
I am developing a registration process which consists of 4 steps. Each step has its own action method. As such a user could type the url for each step as follows: bogusURL/Step1 //returns the View Step1 bogusURL/Step2 //returns the View Step2 etc... I would like to prevent users from gaining access to a step unless they have completed the previous steps. i.e. If they typed in bogusURL/Step2 without having completed Step 1 they should be redirected to the first step.
I'm using a file manager-type WebControl that does lots of postbacks. It's placed inside a Page that is relatively complex. I would like to prevent the WebControl from causing the whole Page to go through the lifecycle.
Is there any way to isolate the WebControl from the rest of the Page? The only way I can think of is sticking the WebControl in a separate Page and creating an iframe in the original Page. Unfortunately that also means my WebControl properties/settings are no longer in the original Page. If I want two instances of the WebControl with different settings, then I have to create a Page for each setting and reference the correct one in my iframes. Not quite as "drag & drop" as I would like.
I want to show a confirmation dialog when a specific value is selected in an asp:DropDownList. If the confirmation dialog returns false (cancel) then I want to prevent the AutoPostBack.
How can i prevent a user from entering the same data twice, i guess i need some validation in somewhere?For example:I add a name of a city, added successfully to the table.Try adding it again, click add and the program crashes.What type of coding do i need for this, some type of compare tool or something for the table?
I've got an ASP.NET web application, and I'm attempting to reduce HTTP calls to the server, so I'd like to not load things like MicrosoftAjaxWebForms.debug.js and MicrosoftAjax.debug.js.
Script manager is used to form all of my external javascript files into one, and I'm concerned that this is causing other non-related libraries to be loaded.
I have a master template that all the pages on my site use. In the template there is an empty panel. In the code-behind for the page an imagebutton is created in the panel dynamically in my Page_Load section (makes a call to the DB to determine which button should appear via my controller). On some pages that use this template and have forms on them, pressing the Enter key fires the click event on this imagebutton rather than the submit button in the form. Is there a simple way to prevent the imagebutton click event from firing unless it's clicked by the mouse? I'm thinking a javascript method is a hack, especially since the button doesn't even exist in the master template until the button is dynamically created on Page_Load (this is ugly since I can't simply do <% =btnName.ClientId %> to refer to the button's name in my aspx page).I tried setting a super-high tabindex for the image button and that did nothing. Also set the button to be the DefaultButton in its panel on the master template but that did not work either. Moreover, I don't want to add a property to all of my pages that use this template (there are hundreds). It would be optimal to find a solution that works globally from my master template.I'll try to show our example here:We have a button on the top of each page in our system that lets you star the page as one of your favorites, sort of a server-side bookmark system. When the page loads it looks to see if the page is one of your favorites or not and then shows a gold star if it is, and a gray star if it is not. Clicking the imagebutton of a star toggles the page favorite status.In my master template (FullMenu.master) I have this panel
I am expecting the RequiredFieldValidator control to prevent a postback when the textbox is filled in with an incorrect data and the button pressed. What happens is that the validator displays an error message but a postback is fired.
When a user presses Button1 on the Webpage, I would like to copy slightly modified string from txt1 (Text) into txt2 (Text). The problem is sometimes I get an error "a potentially dangerous request.form value was detected from the client validaterequest". I get this error when special symbols llike "<" or ">" are in txt1.Text.I've read about that problem. That error is to prevent from hackers who can input scripts into the txt1.All I did is:
1) Put validateRequest="false" into <%@ Page Language="VB" validateRequest="false" at Default.aspx.
Now it works and allows to take any data from txt1, slightly modify it and put into txt2.So, my question is: Did a level of security was reduced after I wrote validateRequest="false" ? Any code should be added to keep the good level of security? Or, I'd better use another way to copy txt1 to txt2?
I'm just wondering what people use to stop user from click a submission button more than once thus creating many records. Does any one have any examples that take client-side validation into account. I have done much research on this but am yet to find a feasible solution.
I would like to create a module that is similar to the inventory system but not with a whole lot of bells and whistles. Basically, I have a jumper business and would like create a database to hold the items (jumper, pop-corn machine, etc.). I would like to have a calendar that when a user click on a date that he/she like to book my item only the available items display and not the one that is already booked. Pretty much to prevent the same item to get book by two different people on the same date. I also would like to create a form on the order page to have the booking information to go into the database.
I realize what I am trying to do is a little unconventional; but I want to make my search SEO. Basically I want the query string resulting from my search to be human readable; if I was doing straight html this would be cake:
I realize that I can change the form method in asp.net, however, all the asp.net state holders show up in the query string. I even tried disabling viewstate and removing all javascript submitting controls (to get rid of __EVENTTARGET) to no avail.
The thing is, I really want to keep using the same master page as I do in the rest of the site; does any one know of anything I can do short of building the page from scratch?
I'm using an asp:ImageButton as a custom CheckBox. When the user clicks on it it shows a dotted rectangle briefly. My code-behind immediately switches the focus to the submit button, but how can I keep this rectangle from appearing while the user has the mouse button down?
I have a web site with an administrative section. All administrative pages are stored in a directory called "db/administration". There is only one user that I want to have access to the pages in this directory. That user's username is "system". Currently, I am using the following approach in my web.config file:
[Code]....
When I logged in as another user, I was still able to access pages under db/administration when I navigated to them through the browser's address bar. What am I doing wrong?
