Web Forms :: Regular Expression To Validate Repeated Subset Characters In A Password?
Aug 9, 2010
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>
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Similar Messages:
Sep 16, 2010
I 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>
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Jan 18, 2010
I 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?
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Jul 1, 2010
I 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."));
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Oct 19, 2010
i 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
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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
Jan 20, 2011
I am looking to find a regular expression that conforms to military addresses.
View 2 Replies
Mar 6, 2013
i want a regular expression to validate path. THe path is :
Server.MapPath("../Error/Feedbackdoc/" & fid & ext)
& fid & ext is the file which is uploaded.
i want to validate the path i.e. ../Error/Feedbackdoc/ and rest can be name of uploaded file.
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Apr 5, 2012
Regular expression validator for not acception special characters and space.
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Apr 8, 2010
What is a good regular expression that will allow only characters with the space?
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Jan 20, 2010
I 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...
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Jul 31, 2010
I 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.
View 10 Replies
Sep 3, 2010
I have a string which has to be matching @"^[w*$][ws-$]*((d{1,})){0,1}$". If it doesn't match this regex i want the characters that do not match to be deleted from the string. How can i set this up?
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Nov 16, 2010
how to use regular expression in vbscript to validate username field. ie it should have minimum of 4 characters and at the same time it should contain minimum of 3 ALPHABETS. ie
1234 - not allowed
abc1 -allowed
My code
dim regObj,retVal
set regObj = new RegExp
regObj.Pattern ="[A-Za-z0-9_s]{4,}"
regObj.IgnoreCase = true
regObj.Global=True
retVal = regObj.Test(sString)
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Mar 23, 2011
Need a regular expression to replace the following sequence
Before : abbbccdd After : abcd
And also if numeric data is present instead of alphabets i would like to remove the duplicates and display
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Mar 3, 2010
I'm using the ASP Validation control a wanted to test that multiline textbox content was between 2 and 40 characters. Any character can be provided, including the new line character. What would be the expression? What I have below fails.
[code]...
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Jul 16, 2010
I have custom control for create user. I use RegularExpressionValidator with expression (?=W{1,}){7,} (lentgth min 7 character and must include not less 1 NotAlphaNumeric character) . I test this expression
function GetText(AInputText) {
var VRegExp = new RegExp(/(?=W{1,}){7,}/);
var VResult = VRegExp.test(AInputText);
return VResult;
}
it's work. But RegularExpressionValidator doesn't accept this expression for input - 1234567! or 12345qwer!
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May 4, 2010
give me Regular expression for validation string that must have at least one alphabet and at least one numeric value?
View 7 Replies
Sep 8, 2010
i'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)
View 2 Replies
Jan 6, 2010
i need a regular expression for validate authors of bookssomething like:
John, D.
John, D.O.
John, D.O.E.
i mean First Char UPPER ended with, the 1 or many initials UPPER separated with.
View 4 Replies
Sep 21, 2010
I 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>
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Nov 24, 2010
i want regular expression for my password field 1. which will not allow to enter two same consecutive charcters 2. it should contain min 8 charcters.3. should contain atleast 2 numeric charcters and if possible code for not allowing user to enter comman passwords
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Jun 8, 2010
I would like to create a regular expession for my login password validation (membership -> provider) but can't find an example anywhere that meets my needs.I would like to require that the paassword begin with an alpha character, contains at least one a-z, one A-Z and one 0-9. The password must be at least 8 characters long but I don't believe that needs to be in the regex.
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Sep 28, 2010
I'm having a hard time trying to create a right regular expression for the RegularExpressionValidator control that allows password to be checked for the following:- Is greater than seven characters.- Contains at least one digit.- Contains at least one special (non-alphanumeric) character.Cant seem to find any results out there too.
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May 19, 2010
I'm looking to validate the length of a textarea using a regular expression validator. It should allow all characters and crlfs. I'm also concerned about crlfs counting as 1 or 2 characters, I'm concerned it may be different across browsers but I'm hoping ASP.NET regulates it. Also, I'm saving to a mix of varchar and nvarchar fields in MSSQL, do I need to be concerned about the way crlfs are saved there? I'm in a hurry to do this right, so I'll be researching all this on my own but I'm just hoping someone out there might have experience handling such concerns.
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