Web Forms :: Regular Expression Validator For Not Accepting Special Characters And Space
Apr 5, 2012Regular expression validator  for not acception special characters and space.
View 1 RepliesRegular expression validator  for not acception special characters and space.
View 1 RepliesI am trying to write a regular expression to replace all special chracters within a string so that I am left with just alphanumeric characters and spaces or full stops.
I am using this expression at the moment
[Code]....
But then I test this with the string "This is a test!", it returns "Thisis a test", which would be fine, except for the space it removes between "This" and "is", can anyone else me where I am going wrong or supply a better expression?
I would like to have an regular expression that does not allow any spaces(before,within,after the word) and alphanumeric characters.
View 3 RepliesWhat is a good regular expression that will allow only characters with the space?
View 5 RepliesI need to construct a regular expression for the password textbox which shouldn't accept special characters($,@,!,etc).Even whitespaces,tabs. I tried the below this accepts special characters.
<asp:RegularExpressionValidator ID="RegEx" runat="server" ControlToValidate="Password"
ErrorMessage="Password must be atleast 8 characters and include a number,alphabets upper case and lower case.
"ToolTip="Password format is not correct"
ValidationExpression="^(?=.{8})(?=.*d)(?=.*[a-z])(?=.*[A-Z]).*$">
</asp:RegularExpressionValidator>
I'm wanting to remove all the special characters (leaving only numbers) in a phone textbox. Here is my current code:
Regex.Replace("(123)456-7890", "[\(\)\-\.+]", "");
I want to maintain the consistency of my database, I want the first letter and every letter after a space to be capitalized before the record can be entered into the database. Currently my validator expression (^[A-Z]+[a-zA-Z]*[0-9]*[^f
v]*$) can achieve only the first capital letter and it can't check on the letter after every space, so what is the expression to achieve that?
I using RangeValidator (0-10)gularExpressionValidator for text box ,Iam using regx for validate numeric characters
But if i enter charcters it will fire both RangeValidator and regx validator eventhoug i am enterd character,
i want to fire both validators seperatly
Here is my code
[code]...
I'm trying to use the validator to work on a email form to ensure that they enter a valid from email address. That part works. I also want to add to the expression the text that I pre-populate in the txtbox ("Enter your email address") so on postback, after sending the message, I can clear the fields and repopulate that box.
How do I add that wording to the current expression: w+([-+.']w+)*@w+([-.]w+)*.w+([-.]w+)*
I am using Regular Expression validator for a text box. The below is working fine.It is not performing validation when I enter values like 0000..001.How can I modify validation expression? But it would allow values like 100,...5000 i.e zeros after a number.
<asp:RegularExpressionValidator ID="reg2" runat="server" ControlToValidate="rng2"
ValidationExpression="^[0-9]+" ErrorMessage="*Please Enter a Valid Number for Second Range."
ForeColor="Red" Font-Bold="True"></asp:RegularExpressionValidator>
How to check the textbox1 value if there is a space or numeric or any special charecters in it
View 7 RepliesThe following reguular expression doesn't trigger a message if a user only puts in just spaces. It will trigger if a person starts with a space and puts in another character. How can I modifiy it?
[Code]....
here is waht i am trying to achieve.
first character is in caps and the rest of the name is in small for Firstname Space
first character is in caps and the rest of the name is in small for lastname
ex: Ajay Kumar Bakshi
expression: ^[A-Z]{1}[a-z]*[s]{1}[A-Z]{1}[a-z]*$
what is the regular expression validator for letters only?. I have tried this"[a-zA-Z]" and "[a-z][A-Z]" with no luck..
View 4 RepliesI have a page with required field and regular expression validators. I noticed recently that some of the regular expression validators (the regex validators on the Date fields) are not firing. What should I be looking at to troubleshoot this?
View 8 RepliesWhen I added Regular Expression validator on FileUpload Control, Page.IsValid returns false & Data is not Saved. I had used Regular Expression Validator like this:
asp:RegularExpressionValidator
ID="REVFileType"
runat="server"
ErrorMessage="*Invalid File(.bmp)"
ControlToValidate="FileUpload1"
Font-Bold="True"
SetFocusOnError="True"
ValidationExpression="^(([a-zA-Z]:)|(\{2}w+)$?)(\(w[w].*))(.jpg|.JPG|.gif)$"></asp:RegularExpressionValidator>.
I had used it to check if uploaded file is of extension .jpg|.JPG|.gif
How would I create a regular expression validator for a textbox, to limit the input to a decimal number between .1 and 1?
View 1 RepliesI have a fileupload on my page which only accepts PDF Files and to do this i have a Regular Expression Validator to check the extension of the files. step 1 load pagestep 2 browse and select a txt file using fileupload then validator error is displayedstep 3 browse and select a pdf file using fileupload then no validator error.step 4 Upload the file using a Button and on post back i can see the validator error is displayed again.how can i remove the validator error on postback without hidding the control.?
View 2 RepliesEarlier my text box was running on this Validation Expression="^[a-zA-Z'.s-]{1,80}$", to allow only alphabets,  ' . s . Now my text box should be capable of taking Chinese characters as well, so I was learnt online to use this p{L} for unicode instead of  a-zA-Z, and set EnableClientScript="false".
asp:RegularExpressionValidator ID="regexpName" runat="server" CssClass="failureNotification" ErrorMessage="No Special Characters allowed"
ControlToValidate="txtName" ValidationExpression="^[p{L}'.s-]{1,80}$" Display="Dynamic" meta:resourcekey="regexpNameResource1" EnableClientScript="false"
I have done both, but it doesn't work. My input values were like
1. John123 2. 汉è¯%^&
Both of these were accepted without any errors. But I expect only alphabets in english and chinese and ' . s - to be accepted as Name input.
I have this email, which I know is valid:
MyName@MyDomain.info
I am validating an input field with the default asp net email validator expression and it returns the email address as INVALID.
Here is my code:
<asp:RegularExpressionValidator
ID="RegularExpressionValidator1"
runat="server"
ValidationExpression="w+([-+.']w+)*@w+([-.]w+)*.w+([-.]w+)*"
ControlToValidate="Email"
runat="server"
ErrorMessage=" * "
/>
Is there a better regular expression pattern to validate an email address?
I'm using RegularExpressionValidator controls to impose password rules when creating new passwords. I want to avoid repeatitons such as 'aaaa' or sequences such as '12345' in the password.
How do I write the validationexpression to a RegularExpressionValidator to impose this rule? I do not want to do thing using C#, just with a regular expression that could be put within the validator control like below:
<asp:RegularExpressionValidator
ID="RegularExpressionValidator3"
runat="server"
ErrorMessage="Password
should contain Minimum 8 Characters"
ControlToValidate="txtPwd"
ValidationExpression="w{8,30}"><asp:RegularExpressionValidator>
I am using regular expression validator for Numbers, Comma and Decimal.. The expression is given below.
mNumValidator.ValidationExpression = "^(d|,)*.?d*$"
Now I would like to have 5 digits behind decimal.
I need Regular expression validator for validating date format dd/MM/yyyy
View 1 RepliesI need a regular expression on a RegularExpressionValidator that just checks if the minimum length is 3 characters, it doesnt matter what characters are typed in...
View 3 RepliesI am looking a regular expression that will remove all of the text except for the charachters that comes after the last "-" character. in this way I can get the ID for a URL.
[URL] so that after the regular expression will be exutes I will have "t43g2g" ID.