Web Forms :: Can Validators Automatically Prevent Database Entry If Triggered
Nov 8, 2010
When I use RequiredFieldValidator inside a DetailsView control field template, it automatically prevented DetailsView from inserting new records into the database, when triggered. JavaScript was disabled.
I'm a bit surprised and I'd like to know whether this is caused by the validator or is there a built-in feature in DetailsView that prevents database from being updated if some validators on the page are triggered?
If so, how is it possibly implemented (e.g. inside when eventhandler)?
I have created a form with several textboxes and a dropdown list and assigned a required field validator to each of them. I also have a master page with several links to other pages, some made using <a href=..> and some linkbuttons. The problem I am having is that when I click the linkbutton links they do not redirect to the proper page, rather they trigger the validators for all textbox fields and display the validator characters next to each textbox (and the dropdown). When I fill out the form, those links redirect properly. The links created using <a href=..> do not cause this problem.
Server Click event is not being triggered when I click on the "LookupButton". The weird part is that this code works on our Dev server, but not QA. If I get rid of "LookupValidationGroup", from the Lookup Button ValidationGroup property, the page does postback, but then my validators do not work. I could explicitly do the validation on the Server Side, but dont think I should need to.
No errors are being displayed. I also reinstalled .net 3.5 using aspnet_regiis -i command.
I have a text box (txtbx1) and a button(btnadd). Id like to use a regular expression validator or of some sort to prevent the user from continuing on the form unless its a number entered.
I have a 'City' TextBox on one of my web pages but people from many European countries sometimes prefix the city name with the postcode instead of putting it in my dedicated 'Postcode/ZIP' TextBox. I have therefore just added a new RegularExpressionValidator to this TextBox. Its purpose is to prevent the user from entering any numeric characters but allow everything else. After browsing for a suitable regex (I am not a regex expert), I found the following code that was claimed to do what I want.
ValidationExpression="^D$"
Unfortunately, the RegularExpressionValidator does not work as expected. Instead of just rejecting numeric characters it appears to reject everything! Where might I be going wrong?
Is it possible to setup the CreateUserWizard to check for a duplicate entry in the aspnet_profile table (for a custom field) before the new user is created? For example, if I added a phone number field and wanted to make sure nobody else could create an account using that same phone number if a user already has an account with that phone number in the aspnet_Profile table's PropertyValuesString row?
I want to prevent the entry of two characters together but I want the user to be able to enter one or the other as well as use the enter key. I would like to use a white list instead of black listing characters. The regular expression also needs to support a min and max length. I'm doing client side validation using the asp:regularexpression control. I do not want to have to do server side validation unless that's the only solution to this problem. Has anyone else run into this?
I'm using a asp.net textbox that is set to multiline so I have to allow for and or what's the point of using a multiline textbox :)
I want to keep the user from entering &# together but allow them to enter text with & or # in it and allow all of the characters a-zA-Z0-9!@#$%^&*_=+~''"";:, .()?-.
A valid text entry would be as follows:
I have a question about my order. The order number is 12345.
An invalid text entry would be as follows:
I am trying to keep the user from entering &# in the textbox, but I want to allow them to enter & or #.
I have several text boxes in an ASP.NET Web Form. I want to ensure that users are not entering HTML into those text boxes. However, I'm not sure how to prevent HTML from being entered. Because of this, I decided that I want to only allow alphanumeric characters, spaces, exclamation point, sharp sign, dollar signs, percentage signs, carets, stars, and left and right parenthesis. I'm omitting the ampersand because I do not want them entering something like "<script&rt;..."
I am using forms authentication on ASP.NET. If I try to access a page by copying the query string and pasting it into the browser, it allows me access to the page. How can this be prevented? I want the user to always have to login.
My IIS server requires authentication to access the localserver this is causing android WebView component to get 403 error once directed the the url if I uncheck Basic Authentication under Directory found in Computer Management -> Web Sites -> Properties I would receive 403 error(Access Denied) this time including my browser
once I restart my computer How do I disable authentication without losing access to it? if this is not possible Is there a way to allow android WebView enter the username and password automatically to prevent 403 error?
I have these 4 images along with the descriptions:
Flag Description
Green Flag (WBGTI of 80 to 84.9 degrees F): Heavy exercises, for unacclimatized personnel, will be conducted with caution and under constant supervision.
Yellow Flag (WBGTI of 85 to 87.9 degrees F): Strenuous exercises or physical labor will be curtailed for unacclimatized, newly assigned personnel in their first 3 weeks. Avoid outdoor classes or work in the sun.
Red Flag (WBGTI of 88 to 89 degrees F): All PT or very strenuous work will be curtailed for those not thoroughly acclimatized by at least 3 weeks. Personnel not thoroughly acclimatized may carry on limited activity not to exceed 6 hours per day.
Black Flag (WBGTI of 90 and above degrees F): All nonessential physical activity will be halted.
1 page to set the flag condition and another page to display the flag and the description. I am new to coding and Im not sure how to do it. I do have MSSQL Server 2005 that I can use to store the data.
I have a simple web form with controls such as test boxes, radio buttons, etc. I also have an empty SQL database created from within Visual Studio Express 2010, in the same project. I want to be able to open the web form, enter text, for example, in a text box, and have it saved in the corresponding field in the database. Ditto with the choice I make from a Radio List box, etc. Is there a simple way of connecting a control on a form with a field in the SQL database? I've tried a number of ways but can't seem to do it, though I realise it must be simple. I also think the control need to be in data entry mode, if there is such a thing, rather than automatically looking for data within the database to display (there is none). I'm new to SQL server and ASP.NET in general, though I've been through a lot of the excellent video tutorials etc.
I am writing an application that collects Customer Complaints and stores them into a database. I want to keep it simple so that the Managers without much web knowledge can use it. This is how my Entry Form works. The Manager selects the name and id of the staff by choosing a location. This loads ids and names of the Staff in that location from the database. Then the Manager rates the complaint based on the severity and enters the comments. I was able to use Session objects to get all these values from the Entry page to the Confirmation page so the Managers can check again. This is where it gets tricky. If there is a correction they have to make by trying to go back to the Entry page, the values are lost (esp. Drop-down ones).
I have a page where I am using 2 update panels. The first update panel contains a form that has some validation tied to it. The second on has a simple form, but no validation. When I go to use the form in the second panel, the postback is halted by the validators in the first panel. Everything works as it should when I remove the validators.
I am creating a website using MVC and Entity Framework for data access and implementing my own user registration etc.. I was wondering if it is better to use a SQL Trigger or addtional LINQ in the register function to enter data into a user profile table after entering data into the Users table when a user registers. I need to add a row to the UserProfile table with the userID etc for additoional info they might have down the road if they choose to enter it.
I am really new at this. I have a site that I would like to display a certain image (a colored flag) based on an entry in the database. I have a folder called flag_images, I'm using VB, and MSSQL Server 2005. I have never done anything like this. There are 4 images total. They are green.gif, yellow.gif, red.gif, and black.gif. The database table is called tblflag. There are three columns. ID (int), time_set (datetime), and flag_color (nvarchar).
I would like to display the green flag if the column flag_color is equal to green and so on for the other colors. Only one flag will be displayed at a time.
How can I prevent ASP.NET page from automatically binding data controls on the page? I want to increase performance and I want to do binding of each data control based on my own order.
I have an entry from a database that has 500 characters. But when i display it i only want to return 200 charcters. How do I do that. I use Sql Server.
my requirement is to delete database value automatically on a given date. In my application i am inserting records in database, now admin will give the expiration date for the value inserted in db. On that particular date, the value should be deleted automatically. I want a logic for this in asp.net. I am using SQL 2005 with C#.
I have to create a simple application which scans, displays and stores the info from a barcode. I have been able to sort the scanning and display part of this application but I need to know how to store the infromation entered into a textbox to a database and then be able to display the stored data as a list at a later stage.E.G. Once the "STORE" button is clicked, the information/text within the textbox is stored to a database. Once the "VIEW STORED DATA" button is clicked, the stored information in the database is displayed as a list.I am a complete beginner when it comes to creating web applications using asp.net. Also, the type of database to use (i.e. sql, wamp.etc) and how to link it to my application is also puzzling.
i have a web application with sql server 2008 i wanna know if its possible to load the data automatically after its been inserted to DB..i have a alerts table which store message and user name to which the alert is to be send i wanna display the alert msg to user after it has been inserted...
How to generate a employee code in textbox automatically while in run time in web application.......when i run the page it will check the employee code in the database and it automatically shows the next value in the textbox how?
Lets take an example of online ticket booking system. Many users could be booking the tickets at any point of time. a GridView displays the list of Allotted and Free seats If a seat gets booked, this information must get updated in all the opened pages in user's browser. User need not require to refresh the page to see if a seat is booked or not Should i put GridView in update panel and keep looking into the databse constantly ??? This could turn out to be a heavy work if databse is too large any other alternative?? or should i stick with the above approach....?
