Web Forms :: Regular Expression For Empty Textbox?
Jun 16, 2010I have a problem with regular expression because I want to validate a textbox and I want that mark the error text when the textbox be empty.
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Web Forms :: Regular Expression For Empty TextBox
Nov 20, 2010I am using regex for server side validations.
I am facing a problem with regex. I want to check for sepecial characters like ><*&()%$@!~+...
I need to filter these special charecters...but the problem is in my 10 textboxes there only 3 are required...
I can submit the form without entering anything...but my regex is not allowing me to submit the form without giving a space from keyboard...
I just want to check for special charecters and empty textbox without giving a spacebar...
I just check these sites(http://regexlib.com/ and http://www.regular-expressions.info/) and read some documentation on regex...its kind of confusing....
Here is my regex for Middlename: ^[a-zA-Z''-'s]|[ ]{1,40}$ its worked but its not correct....then I changed it to ^[a-zA-Z''-'sd*]{1,40}$ this also not taking emptytextbox without giving a space...
My Goal:
In most of the textboxes I need to allow only numbers and - # _ in some textboxes....
For Address: need to allow alphabets and numbers and #-_' "
City: numbers and alphabets no special chars...
Main problem is I can write regex for most of these stuff but need to all textboxes without entering anything (empty textboxes).My work got stoped due to this.
Web Forms :: Validate Empty Textbox With Regular Expression
Jun 16, 2010I want That validate the textbox so this no be empty I put that
"[ws]{1,50}"
But I want that the error mark when the textbox be empty.
Regular Expression Validator Does Not Validate Empty Textbox?
Jun 30, 2010I would like to validate the textbox for specific text and it must not be blank. But the regular expression validator is not validating if the text box is BLANK. However, it validates if I type something in the text box.
How can I make regular expression to trigger even if the text box is empty?
Should I use Required Validator + Regex Validator at the same time?
<asp:TextBox ID="txtcard" runat="server" MaxLength="16"></asp:TextBox>
<asp:RegularExpressionValidator ID="RegularExpressionValidator2" runat="server"
ControlToValidate="txtcard" ErrorMessage="Please type credit card no"
ValidationExpression="^d{16}$"></asp:RegularExpressionValidator>
Web Forms :: Regular Expression That Validates Empty Strings
Oct 16, 2010I'm trying to write a regular expression that allows positive & negative floating point numbers, but doesn't allow empty strings and characters.I have managed to create this
[Code]....
but it allows empty strings and I can't figure out how to add [+-].
My program is a web app which asks the user to input a temperature.
Web Forms :: Validate A Textbox With Regular Expression ?
Jul 1, 2010I want to validate a textbox with regular expression so you only can enter numeric characters, but now I want that the error validation appear if the textbox be empty. here is the code
Types.Add("NUMBER",
new
Validation(@"[d]{1,255}","Only
numbers can be entered in this field."));
Web Forms :: Regular Expression / Textbox String Should Be In Value?
Apr 26, 2010I am new to regular expression. Could you give me the syntax in asp.net??
The textbox string should be int value, non zero, non-negative.
Web Forms :: Regular Expression On A Textbox In Gridview?
Apr 2, 2010I have the following within a gridview:
<asp:Textbox
ID="txtACK855Quantity"
runat="server"
Text='<%# Eval("ACK855Quantity") %>'></asp:Textbox>
<asp:RegularExpressionValidator
id="RegularExpressionValidator1"
runat="server"
ErrorMessage="Invalid" ControlToValidate="txtEstimatedDeliveryDate"
ValidationExpression="^d+$"
Display="Dynamic"></asp:RegularExpressionValidator>
But it's not working. I key a 1 in the textbox and I get the "invalid" errormessage. What am I doing wrong?
Web Forms :: Regular Expression To Validate Textbox ?
Oct 19, 2010i want to validate my textbox where following things are not allowed
1) phone no
2) email
3) internet url
i want to use regular expression
Web Forms :: How To Create A Regular Expression Validator For A Textbox
Aug 30, 2010How would I create a regular expression validator for a textbox, to limit the input to a decimal number between .1 and 1?
View 1 RepliesWeb Forms :: Code(regular Expression) Validating Textbox?
Oct 29, 2010the text box should validate in such a manner that the special characters like <,>,%,!,? should not appear in the text box.if appears an erroe msg should be displayed representing invalid name.or else it sholud be processen....
can any one tell the code(regular expression) for the above mentioned.
Web Forms :: Regular Expression - Check Length Of Textbox Less Than 200 Character
May 1, 2010i have a textbox in my web form and i want to input any word with any character. so, only i want to check length of textbox less than 200 character. how can i do it with regular expression? and if i want to block some character how can i do it?
View 3 RepliesWeb Forms :: Enable And Disable Regular Expression Validation For Textbox
May 7, 2012I having a two radio button. When the second radio button is enabled, a text box which accept the email id will appear. I am validating the Email using Regular expression validator.
When the second radio button is clicked, and I enter the invalid email id so that it shows me and error. But when I click the first radio button, it is  showing the save validation. I need this to not show the validation when the first radio button is clicked and invalid email id is there in the text box.
Regular Expression / Input String Is Valid Based On The Given Regular Expression?
Sep 20, 2010i have to check if an input string is valid based on the given regular expression.. this is the regular expression.
(a(bb+aaa+((ab)*bb+(aba)*aa)(a+b)*) + (b(aa+bbb+((ba)*aa+(bab)*bb)(a+b)*)
+ is an OR
* is a LOOP, it is optional, it may be done as many as a user wants.
i've tried many ways to solve the problem that my professor gave me but my knowledge isn't that enough to solve this problem..
Web Forms :: Regular Expression Validator For Date Format Validation For TextBox
May 31, 2012I need Regular expression validator for validating date format dd/MM/yyyy
View 1 RepliesWeb Forms :: Create A Regular Expression For The Password Textbox/unable To Limit The Length To 16
Sep 21, 2010I need to construct a regular expression for the password textbox, Min:8,Max:16 and must include atleast a number(0-9),alphabets upper and lower case. I am unable to limit the length to 16.
<asp:RegularExpressionValidator ID="RegEx" runat="server" ControlToValidate="Password"
ErrorMessage="Password must be min:8,max:16 characters and include a number,alphabets upper case and lower case.
"ToolTip="Password format is not correct"
ValidationExpression="^(?=.{8})(?=.*d)(?=.*[a-z])(?=.*[A-Z]).*$">
</asp:RegularExpressionValidator>
Regular Expression For Multiline Textbox?
Feb 17, 2010I have a regular expression
ValidationExpression="^((?!script).)*$"
this works good when I am using it for a normal(singleline) textbox.But when i use this with Multiline textbox it does not work. I am using RegularExpressionValidator control of asp.net for the same.Would there be any way I can make it compatible with Multiline textbox?
Web Forms :: Construct A Regular Expression For The Password Textbox Which Shouldn't Accept Special Characters
Sep 16, 2010I 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>
Using A Regular Expression Validator For Numbers In A Textbox?
Jul 13, 2010How can I use a Regular Expression Validator to ensure that only a number like 3.00 is entered into a text box?
View 1 RepliesAJAX :: How To Use Regular Expression To Validate TextBox
Sep 8, 2010i'm stuck with password validation in c#.
I'm using regular expression to validate the string.
Password criteria is alphanumeric.
The password must have atleast one number(0-9), atleast one character(a-z or A-Z)
MVC :: Use Regular Expression Validation On Textbox And Pop Up Message On Save Button Click?
Jul 21, 2010I want to use regular expression validation on textbox and pop up message on save button click in MVC2.
View 6 RepliesRegular Expression (C#) Remove All The Special Characters (leaving Only Numbers) In A Phone Textbox?
Mar 8, 2010I'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", "[\(\)\-\.+]", "");
Web Forms :: Regular Expression Validator / Add Wording To Current Expression: W+([-+.']w+)*@w+([-.]w+)*.w+([-.]w+)*?
Feb 16, 2010I'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+)*
Web Forms :: Validation Expression For Regular Expression Validator?
Feb 2, 2011I 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>
Regex - Regular Expression And Validation Expression ?
Dec 1, 2010I need some help in regular expression.I am validating the textbox text when updating the records.When i click the update button,the first 5 letters should be equal to CM000 or cm000.How to validate this using regular expression in asp.net. does anyone know validationexpression for this.
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