Web Forms :: How To Restrict User To Entering HTML Tags In Textbox
Aug 25, 2009
i am having backend form to upload details to sqlserver.i am textbox to paste profile. company profile sometime contains bullets. so when i put <li></li> inside textbox and save it , i am getting error like potential A potentially dangerous Request.Form value was detected from the client can u please suggest me what to do.
I have problems with user typing html tags in som inputsfields in my webforms, and it has no relevans, but the eventvalidation throws an exception when the form is submittet! Can i validate the inputfields for html tags to avoid this exception, and instead tell the client that the content isn't valid?
I need to be able to insert HTML tags in some TextBox controls in a webpage. I know I can avoid the exceptions of type HttpRequestValidationException by changing the ValidateRequest property of the Page directive to false, as in
But that leaves all TextBoxes on the page open for HTML insertion, which I don't want. I need to be able to insert HTML in only some TextBoxes, not in all of them.Is there a way to accomplish that?
I am working on registration page. I am accepting some general inputs from user. Like First Name, Middle Name, Last Name etc.
Now what I want to do is:
1. When user enters in textbox then while typing; first letter should be automatically come up as capital letter & next as small case letters. E.g. If I am typing my first name then while typing it should be Sanjay & not as sanjay or sAnjay.
2. While typing in textbox user should not be allowed to enter white space in between the words like Sa jay this should not be happen. If user types like this I want to give an alert that something like please do not use space in between name.
How to check whether the html tags are well formed inside the textbox? I'm using vb.net 2.0 .For example , if i enter this sentence in textbox "Hello <b>swapna<b>" I want to check whether the opening of html tag also contain closing tags..
I have a text area in my ASP.NET web application that is used to enter html code. Now there is also an button control, which upon clicking should retrieve just the text placed between certain html tags in the text box. For example:
1) User types html code including tags etc. and clicks the OK button 2) In my code the text from the text area is retrieved and only the part between a <p></p> tag should be saved to a string object.
I can obviously get the text from the text area and attach it to a string object but I am not able to work out how to just get text within a certain html tag like <p></p>
I have a login form and users have to enter their username and password for entering the sites ..
Also now its possible for users to enter the sites without login .. they can select the options in the menu and access them ... But i want to restrict the users ..only allow them to access the menu componets after login ... If they tries to access the contents a text have to display ask them to login
how can i do that... i am using vb.net as my language in the page
Just wondering what the best approach is to labelling ID's (thats html id's) in .net.
For instance I may have a user control that is embedded in a page more than once. If I have a standard html div in the control with id="my-user-control", then it will duplicated when the page is built.
So what is the best approach for styling your html within user controls, master pages and .net in general?
In my web page I have an textarea control to enter some input from users.I want to remove all html tags from this input (for security and design issues). It is ok like this -> Regex.Replace(inputString, @"<a(.| )*?>", string.Empty);
However, I allow users to insert only custom tags which i specifies such as
so, for example user types <clickHere> forums.asp.net </clickHere> I will replace it with <a href="forums.asp.net"> click here </a>
also I can do it with regular expressions.But, if user types <a href="forums.asp.net"> click here </a> I want to remove all html tags because they are only allowed to use custom tags.The problem is when i try to remove html tags it also removes my custom tags, how can I exclude custom tags not to be removed?
i'm doing ajax website using PostWebRequest() function, when i call any .aspx page to the target html element the output is coming fine in IE but in FF(FireFox) is coming in html format(html tags) IE output : [URL] FF output : [URL]
I'm building my very first mvc project. I'm having this problem. i have a text area for users to write same text, more or less in a twiter style site. how ever in this text area if the user write same html tags (like <p> , br/> and so on I'm getting this Error: A potentially dangerous Request.Form value was detected from the client (status="...efor tags <br><br/> <p>"). I would like to have same valuator that just ignore any html tags that where written by user
Our customer needs to add a value like 'NAK' to the database. This is a hexadecimal value (think it's either 15 or 21). How can the user enter this in the textfield? Or, what do I have to do to allow this to be entered?
If he enters '21', it just saves '21' to the database because he once asked for backslashes in this particular field.
Then, once I know how to enter the hexa value, can I expect any trouble in saving this to the database?
I never knew that there was something like when you enter <xx> in the textbox it gives the error, so my question is how can i avoid this kind of problem? and how can i avoid this error? I cant say to ppl do not enter this in textbox who know what ppl can do, so it is better to make sure you wont get error cuz of this.
I ve design a page that has nine text box name txtSubject1 to txtSubject9 with the visibile properties to be false.I now have a method called Save1, Save2 to Save9 depending on the no of subject selected from the dropdown.But i think that is not professional bellow is a sample of how i did't and i believe the textbox can n number of an array that can be selected from the drop down. i need someone to put me through how to insert this into the database out side the fake method i ve used.
can i add new records in gridview by entering value in textbox in runtime?suppose a value is entered in textbox and concerned record is displayed in gridview again if i want to add a new record in gridview along with the old record how can i add?
I have a textbox where user can add comma separted value. I would like to add it to the database.that i can do it without any problem. After that i would like to get the value retrieve from the database and then display it to the user in grid or something like that.
I've got textboxes for dates, and they are hooked up to the jquery datepicker. I would like to disallow actual typing into the text boxes, forcing the datepicker UI to be the *only* method of populating the textbox. I tried setting the textbox to readonly, but that ended up not passing the on-screen-displayed datepicker-selected date back to the server, and hence not saved.
I have generated dynamic text boxes for each table row there are 6 text boxes
1. For the first two text boxes the values given by the user should be in valid range(this range comes from the database).User is allowed to enter the value within that specified values only. How to achieve this? I have taken drop down lists but if the values in drop down increases selecting required value is tedious to the user.. (if it is having 1000 values) and while I am retrieving the values I have written query such as Null values ignored. But I am getting NULL values in the dropdown here is the code what I have written,
(Database is Oracle) If Not (OledbCmd.Equals(String.Empty) Or OledbCmd Is Nothing) Then OledbDA.SelectCommand = OledbCmd OledbDA.Fill(ds, "textDB") dt = ds.Tables("testDb") If (dt.Rows.Count > 0) Then ddlist.DataSource = dt If UCase(s) = "NUMBER" Then ddlist.DataValueField = "num" ElseIf UCase(s) = "NAME" Then ddlist.DataValueField ="name" End If ddlist.DataBind() ddlist.Items.Insert(0, "Select") ddlist.SelectedIndex = 0 Else ddlist.Items.Insert(0,"Norecords") End If End If
2. In the rows generated when user presses functional key F3 then the values of the above row(previous row) have to be copied in present row. similarly for F4 column copying. This I achieved through the Java script. But I have many forms requirement is same. where as text boxes id differ. how can I generalize the One function to work for all forms. I wrote as like this.
i was wondering if anyone could help me with a problem i have. im not sure how to go about this exactly i have a web site for a group of ramblers
i have a master/details page which shows walks planned for the future and they can click "details" for the full details
but what i want to incorporate into it is that when they are looking at the full details there is an option to add them to it as attending by entering a user name and password (saved in a table in the database) and if entered correctly their username will be added to it as attending.