Web Forms :: How To Use A RegularExpressionValidator
Sep 17, 2010
I have a text field where user can enter either an URL or an Email address. How can I use a RegularExpressionValidator to validate that user have entered an URL or an Email address
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Similar Messages:
Feb 15, 2010
I am using a RegularExpressionValidator in my code as follows:
<asp:RegularExpressionValidator ID="rev1" runat="server"
ValidationExpression="[a-zA-Z0-9]{5,7}"
ControlToValidate="txtTAM5" ErrorMessage="Please enter a valid value." SetFocusOnError="True"
Display="Dynamic" ValidationGroup="vg1"></asp:RegularExpressionValidator>
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Sep 21, 2010
I have a query on RegularExpressionValidator. Although this question already asked in various time, I just want to confirm that if I want to validate "only alphanumeric or(and) double quote, single quote, exclamation, semicolon, colon, ampersand, dot, comma, hyphen, question mark, front slash, parentheses, space of 5-40 character length" then will the regular expression be this :
[Code]...
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Nov 4, 2010
I have a ValidationExpression that works fine in IE8 and Firefox but client uses IE6 and it doesn't seem to work for them. The issue concerns special characters in a password text box, the clients wants to be able to INCLUDE special characters but IE6 doesn't seem to pick them.
Basically we want to be able to include any letter (upper and lower case) , any number and any special character. This is what I've got so far...
ValidationExpression="^(?=.*d)(?=.*[a-zA-Z]).{8,}$"
Like I said,
test123*
works ok on IE8 but IE6 doesn't seem to pick up special chars so thinks it's only 7 characters long..
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Apr 11, 2010
I added to my project a simple RegularExpressionValidator for email.ut i cant undersend why it is allows wrong for any email.
[Code]....
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Feb 24, 2011
Wondering if you could give me a nudge in the right direction. I'm working on an app where I need to validate a field for a correct URL. However, this is an optional field and may be left blankI was just wondering, how can I bypass the validator if the field is null.
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Jan 13, 2011
Does the RegularExpressionValidator always need a RequiredFieldValidator?I see that when there is no input the RegularExpressionValidator is not working. Correct?
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Jan 7, 2010
[Code]....
so what did i do wrong with the regex that its now allowing other document types to be uploaded. I need to make sure that ONLY pdf are allowed. What can i change to the validator and if anything add to the code behind to correct this?
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Aug 31, 2010
My implementation is simple. I have a public static variable in a class called EmailHelper containing my regular expression as follows:
[Code]....
I then have the following web controls on my page:
[Code]....
The problem is that doesn't matter what regular expression I define as the value of my static public variable bound to the <asp:RegularExpressionValidator />, I always get an error (i.e. it aways says "invalid email")...
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May 5, 2010
gularExpressionValidator on my textbox that I am already using, but I need it tweaked. Here is the one I'm using: ^(([0-9]|[1][0-9]|2[0-3])(.)(25|50|75|00))|(24.00)|([0-9]|[1][0-9]|[2][0-4])$It is for the input of hours worked in a day. The minimum is 0.00 and the max is 24.00. The hours are rounded off to the quarter hour, so it allows for .25, .50, .75, and .00.
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May 10, 2010
I am currently working on a web form where you need to make your own account. One of the required fields is where you need to fill in your postal code. I work with an RegularExpressionValidator. This exists out of 4 numbers. The first number may not be a zero. I know that I need the ValidationExpression (propertie of RegularExpressionValidator) but I don't know what to fill in.
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Mar 17, 2011
i am using RegularExpressionValidator inside Ajax popup.
inside this poupup i have a cancel button which will exist the popup in whatever state it is.
problem: when ValidationExpression is false i am not able to exits the popup by hitting cancel button.
i always have to remove the vale from the textbox and exist from poupup.
question:
how can i achieve my goal, not always emptying the textbox...?
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Jan 20, 2011
i have an text box i need to validate so that the user can enter up to four character and they can be aplha numeric (combination of numbers(0-90 and characters(a-z),
i am using vs2003, .net 1.1
what is the expression i should use to validate this condition
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Oct 19, 2010
I have tried everything and can't seem to wrap my head around it...I am trying to use the RegularExpressionValidator to validate that a asp:textbox has an '' in the value that the user types in, and it can't be the first or last character.
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Nov 24, 2010
I have a small form with 3 TextBoxes. One textbox I check for numeric values using RegularExpressionValidator / ValidationExpression. Bellow are two buttons: Cancel / OK.
Is there any way to allow the user to continue with "Cancel" even though RegularExpressionValidator finds an error in the textbox?
note: now, if there is an error, whatever user clicks (cancel or OK), nothing happens until the user either corrects the error or deletes the text from textbox completely...
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Dec 13, 2010
I have an asp:regularexpressionvalidator with the following expression to validate a file upload.
[Code]....
Expresso shows me that it works. The simple html test page below shows that it works, but in my application, loading an html file in the file input always triggers the validator?
debugging the javascript of this control?
control code:
[Code]....
simple test page:
[Code]....
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Aug 4, 2010
My website has 500 *.dll in bin folder. I write a page with only one TextBox At aspx file.and cs code as below. After iisreset , it costs a long time to open the page.The trace log show itspend much time between Begin PreRender and End PreRender. Please tell me why it takes so long ?
cs code:
protected void Page_Load(object sender, EventArgs e)
{
RegularExpressionValidator _regularExpressionValidator = new RegularExpressionValidator();
_regularExpressionValidator.EnableClientScript = true;
_regularExpressionValidator.Display = ValidatorDisplay.None;
_regularExpressionValidator.ControlToValidate = "TextBox1";
Page.Form.Controls.Add(_regularExpressionValidator);
}
trace log:
aspx.page Begin LoadComplete 0.000986438220500092 0.000158
aspx.page End LoadComplete 0.00100739060411309 0.000021
aspx.page Begin PreRender 0.00102359378077381 0.000016
aspx.page End PreRender 16.6258622255063 16.624839
aspx.page Begin PreRenderComplete 16.6259253620223 0.000063
.net framework 2.0
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Feb 5, 2011
I have a Detailsview working fine in ASP.NET 2.0 VB. where I can obtain any links or articles detailing the settings for the Template as a guide to me apply RegularExpressionValidators to a number of the fields in my application.
My application works fine with the Required Field Validator. The majority of examples that I have been able to find are using this particular Validator.
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Feb 15, 2010
a full proof RegularExpressionValidator expression for a comma seprarted numeric field (ie. 123,345,567)?Also, would somone know what web site I can go to for RegularExpressionValidator expressions.
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Dec 16, 2010
I want to validate the price field. This is my RegularExpressionValidator
<asp:RegularExpressionValidator
id="RegularExpressionValidator1"
ControlToValidate="txtPrixFormation"
ValidationExpression="^d+(?:.d{0,2})?$"
Display="Static"
EnableClientScript="false"
ErrorMessage="enter a dollar amount"
runat="server"/>
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Mar 30, 2010
I have a e-mail address validator but I need to add special characters as valid for example ü, ç... Because users in Turkey (or anywhere else) can have a web site url like: hasangürsoy.com My code is below:
[Code]....
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Dec 13, 2010
I want to validate the price field using RegularExpressionValidatorThis is the code I used. It worked except that when I modified the other fields, it gived me the message "Enter the dollar amount" at the price field. ( I don't want to touch the price field. I only want to modify the other fields )
<asp:TextBox
ID="txtPrixFormation"
runat="server"
[code]...
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Mar 26, 2010
I'm burning my brain for 2 days trying to make the RegularExpressionValidator message to apear inside of the textbox but nothing is working .
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Sep 13, 2010
[Code]....
The above control is firing the error message -- even when a valid email address is entered. Any idea what I am doing wrong?
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Jan 9, 2011
I have a 'City' TextBox on one of my web pages but people from many European countries sometimes prefix the city name with the postcode instead of putting it in my dedicated 'Postcode/ZIP' TextBox. I have therefore just added a new RegularExpressionValidator to this TextBox. Its purpose is to prevent the user from entering any numeric characters but allow everything else. After browsing for a suitable regex (I am not a regex expert), I found the following code that was claimed to do what I want.
ValidationExpression="^D$"
Unfortunately, the RegularExpressionValidator does not work as expected. Instead of just rejecting numeric characters it appears to reject everything! Where might I be going wrong?
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