Web Forms :: Expression Validator For Empty String

Dec 19, 2010

Is there any way to use a validator that shows an error mesagge, if the user leaves a textbox blank (empty string)? Note: in this case I can use RequiredFieldValidator, because the control I want to check for empty string is on a modalpopup (which is not visible most of the time) and the RequiredFieldValidator then blocks the Buttons on the rest of the (visible) page.

View 1 Replies


Similar Messages:

Regular Expression Validator Does Not Validate Empty Textbox?

Jun 30, 2010

I 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>

View 3 Replies

Web Forms :: Using Range Validator And Regular Expression Validator For A Text Box?

Dec 31, 2010

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]...

View 8 Replies

Web Forms :: Regular Expression Validator / Add Wording To Current Expression:  W+([-+.']w+)*@w+([-.]w+)*.w+([-.]w+)*?

Feb 16, 2010

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+)*

View 4 Replies

Web Forms :: Validation Expression For Regular Expression Validator?

Feb 2, 2011

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>

View 2 Replies

Forms Data Controls :: Getting Text As Empty String When Gridview Cell Is Empty?

Feb 19, 2010

I have a gridview with two bound fields. On clicking a button i want to display the values in first row of gridview in two textboxes. But if gridview cell is empty i am getting the text in textbox to which the value of cell is given as -' 'i know my problem will be solved if i use the template fields instead. But i want a solution while maintaining the bound fields ,if any.

View 2 Replies

Web Forms :: Regular Expression Validator Not Working?

Feb 16, 2010

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]*$

View 5 Replies

Web Forms :: Regular Expression Validator For Letters Only?

Jul 2, 2010

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 Replies

Web Forms :: Regular Expression Validator Not Firing?

Jan 5, 2011

I 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 Replies

Web Forms :: Error Comes When Regular Expression Validator Added?

Jan 6, 2010

When 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

View 4 Replies

Web Forms :: How To Create A Regular Expression Validator For A Textbox

Aug 30, 2010

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 Replies

Web Forms :: File Upload And Regular Expression Validator?

Feb 5, 2010

I 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 Replies

Web Forms :: Regular Expression Validator For Both English And Chinese

May 7, 2015

Earlier 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. 汉语%^&

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.

View 1 Replies

Web Forms :: Right Email Bounces By Default Regular Expression Validator?

Jan 12, 2011

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?

View 3 Replies

Web Forms :: Change Validation Expression On A Validator To Alpha Numeric Or Another?

Jan 12, 2010

MMM the title speacks for it self i think,

View 3 Replies

Web Forms :: Regular Expression For Empty Textbox?

Jun 16, 2010

I 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.

View 1 Replies

Web Forms :: Regular Expression For Empty TextBox

Nov 20, 2010

I 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.

View 1 Replies

Web Forms :: Regular Expression Validator For Numbers, Comma, And 5 Digits Behind Decimal

May 5, 2010

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.

View 7 Replies

Web Forms :: Regular Expression Validator For Not Accepting Special Characters And Space

Apr 5, 2012

Regular expression validator  for not acception special characters and space.

View 1 Replies

Web Forms :: Regular Expression Validator For Date Format Validation For TextBox

May 31, 2012

I need Regular expression validator for validating date format dd/MM/yyyy

View 1 Replies

Web Forms :: Regular Expression That Validates Empty Strings

Oct 16, 2010

I'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.

View 2 Replies

Web Forms :: Validate Empty Textbox With Regular Expression

Jun 16, 2010

I 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.

View 4 Replies

Web Forms :: Regular Expression Validator Does Not Work With Aspx Generated Register Form

Jan 2, 2011

I'm trying to add a regular expression validator to verify the email text box that is within a Create User Wizard. The form that I'm working with is called Register.aspx, and is the form that is auto generated when you start a new web application found under the Account folder.

For some reason the code below is not firing off when I enter an email address that is incorrectly formatted. I have a feeling it's because I manually added the code within the form but that's just my guess.

[Code]....

[Code]....

View 2 Replies

Web Forms :: Regular Expression Validator For Email Address With Specific Domain Validation?

Feb 26, 2013

In my registration form, there is field to enter email-id of member, i want to restrict user, so that he would not able to enter gmail, yahoo, radiff.... emailids is this possible.., Only company email id eg: priyanka@juncturetech.net must be allowed?

View 1 Replies

Data Validator Expression?

Jun 8, 2010

I really don't know about regex expression.I would like to have an regex expression that will validate my textbox.To ONLY allow this format MM/DD/YY

View 7 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved