Regex Validation On A Text Box Locks-up Text Box On Postback?
Nov 10, 2010
I have a web application (done in ASP/C#) that has regex validation on a text box. Initially the regex works perfectly fine. But then I also provide a button click event (clear) that allows the user the clear text box and change their input for a new query. At this point (page post back) the regex takes control and maintains control of the text box so a new query can't be run. Can anyone tell me what to do so that the regex doesn't fire on page postback and allows new input for validation?
i've currently got a registration form that works fully however i've run into a problem getting the validation text to appear. basically i want the form to present the following message "Congrats you are now registered and can login using the login page" only if all the fields in it are filled in. However with what i have coded below it always presents the message, i am using asp.net 2.0 with webmatrix.
string pattern = "<(.| )+?>"; System.Text.RegularExpressions.Regex regEx = new System.Text.RegularExpressions.Reg(pattern); string result = ""; result = regEx.Replace(htmlText, "");
In this "htmlText" will have some html code which also contains break tags. Right now its replacing all the html tags, but I want to leave break tag and replace the rest.
I have a table being brought in using HttpWebRequest (screen scraping). The table I grab is formatting properly but I have noticed a situation. This table has a URL which refers to a physical web page. What I would like to do is to take that URL using a .Replace clause and thereby change the URL to reflect <a href="details.aspx?id=111"> as opposed to <a href="111.htm">. So I went ahead and tried doing it this way but it doesn't do any replacement.
[Code]....
I figured using the regex expression it would find it and then I could just reuse it.
I would like to conditionally remove a block of text between specifed start and stop delimiters. The code below does not work, but hopefully it suggests enough of what I am trying to accomplish.
Background: I've wrote a small library that is able to create asp.net controls from a string.
Sample text:
Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et {{asp:hyperlink|NavigateUrl="/faq.aspx";Text="FAQ";}}{{codesample|Text="FAQ";}} accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur
I've expanded the code with some reflection to gain full flexibility to be able to render WebControls and UserControls. Works fine so far, for every usercontrol I've tested. I'm now facing the problem, that the parsing for my property key-value is not flexible enough to support arbitrary multine content.
This is part of the code that I'm using for the string operations:
Currently we are saving files (PDF, DOC) into the database as BLOB fields. I would like to be able to retrieve the raw text of the file to be able to manipulate it for hit-highlighting and other functions.Does anyone know of a simple way to either parse out the files and save the raw text on save, either via SQL or .net code. I have found that Adobe has a filtdump utility that will convert the PDF to text. Filtdump seems to be a command line tool, and i don't see a way to use a file stream. And what would the extractor be for Office documents and other file types?-or-Is there a way to pull out the raw text from the SQL Full text index, without using 3rd party filters?Note i am trying to build a .net & MSSql solution without having to use a third party tool such as Lucene
I am developing a site using VS2008, so I have AJAX 3.5, and the site is meant for using IE8 browser only. I have a TabPanel with 6 tabs, one of them uses controls with postbacks. I had an UpdatePanel outside the TabPanel so the entire panel will perform a refresh on postback. However, the refresh is a little slow so I tried using an UpdatePanel inside the specific tab to refresh only the controls I need updated. It worked, but what ends up happening is the subsequent AJAX controls (I have NumericUpDownExtenders) and tabs become locked (can't click on them). Is this a problem because the Update Panel is already nested inside an AJAX control (TabPanel)? Or is there some other way to go about doing this?
I am developing a site using VS2008, so I have AJAX 3.5, and the site is meant for using IE8 browser only. I have a TabPanel with 6 tabs, one of them uses controls with postbacks. I had an UpdatePanel outside the TabPanel so the entire panel will perform a refresh on postback. However, the refresh is a little slow so I tried using an UpdatePanel inside the specific tab to refresh only the controls I need updated. It worked, but what ends up happening is the subsequent AJAX controls (I have NumericUpDownExtenders) and tabs become locked (can't click on them). Is this a problem because the Update Panel is already nested inside an AJAX control (TabPanel)? Or is there some other way to go about doing this?
I'm trying to use required validation controls on two text boxes and tried using the following code:
<asp:TextBox ID="starttimeInput" runat="server" Width="130px" Height="23px"></asp:TextBox> <span class="style1">*</span> Start Time <asp:RequiredFieldValidator ValidationExpression="^([1-9]|1[0-2]|0[1-9]){1}(:[0-5][0-9][aApP][mM]){1}$" ID="StartTimeValidator" runat="server" ErrorMessage="You Must Supply Both a Start and an End Time" ControlToValidate="starttimeInput"></asp:RequiredFieldValidator>
but I can still enter whatever I want into the text box. What I'm trying to check for is that users are entering a time in a valid format.
Am trying to implement some sort of validation on a text box, that users would input dates into. I need help on writing VB code, such that when users fill there date of birth into the text box, it prevents them from putting a date in the future. Also for a text box that requires a date in the future, the validation should prevent them from picking a date in the past.
In ASP.Net textbox, How I can restrict the user to enter maxlength. I should show message in label or message box, if user exceeding the maximum length. I am using C# as code behind.
I have in my database the News Table which consist of => Id, Title, txt . I need to be able to get a description text from the whole text which exist in txt Field , but without any codes like <...> , just a pure text !! how can I do this?
im rather new to this and unsure of how to complete the task in the title. I currently have a text box called txtmodule, i want to restict the user from entering any number except 20 or 40. How can i do this using a RegularExpressionValidator or is there a better way?
I have a table with 5 rows and 2 columns. Each cell contains a text box. I want to show error if one of the text boxes in each column is empty. I want both text boxes in a row shld be filled or both shld empty. How can i do this via Asp.net validation controls? I want to extend CompareValidator so that it will validate only if the controlToValidate and controlToCompare both have some text in it or both are empty.
