Security :: Restrict User To Enter Special Characters In Textbox?
Mar 16, 2010
I gave an option to user to change password but the text boxes are taking - / @ (special characters). How to check at runtime that user may not enter these characters?
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Similar Messages:
Nov 16, 2010
I want to restrict the user in toolbar search by not allowing him/her using Some Special Characters like
('/','>','<','|').
$("#tblFundComp").bind("keydown",function(e)
{
if(e.keyCode >=48 && e.keyCode <=57 ) [code].....
I have placed this piece of code after before search function. But this does not work
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Oct 14, 2012
I want user to enter name in Arabic if the user enter in english it should give Message " Enter Message In Arabic " and same for English if user try to enter in arabic it should give a message "Enter Name in English"Â ...
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Dec 19, 2012
I want to restrict special chars `!`~@#$%^&*()_+|-={]}[;:,.?/ without any alphabat in asp.net textbox.
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Dec 17, 2010
I've built a web application that employees sign on to and take tests, get certifications, etc. My client wants all employees set up so that their user name is their real name, in the format of "Lastname, Firstname". It doesn't look like MembershipProvider will allow commas or spaces in the user name. Am I going to have to store this in a separate column in another table, or is there a way to tell the provider to accept those characters...
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Aug 31, 2010
I want to prevent users from entering url's (like a href="") in a TextBox.
I want to use a regular expression validator but no idea what to write?
How can I do it?
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Jul 22, 2010
I have few Text Box controls on my webform on which I would like to do some validation. Validation: Controls should not be allowed to accept All special characters EXCEPT ALLOW letters (incl all foreign language characters), numbers, period, comma, question mark, apostrophe, ampersand, soft parentheses & hyphen. Whats the best way to implement this & how?
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May 31, 2010
i need a regular expression validator for password that should not allow some of the special characters like % ' " ; *. give me the expression such that it should allow special characters except the above and a numeric a capital letter and a small letter ...
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Mar 8, 2010
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", "[\(\)\-\.+]", "");
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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 3, 2010
i am making a webform for university students to register projects.there is a dropdown list which will ask how many students have participated, suppose student select 3 students, now my question is how can i restrict user to enter only one students data,i want he/she should fill all three students data than the submit button should enabled.
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Sep 17, 2010
I have developed a ASP.NET application,I have used sessions for parameter passing.I dont want to let the user to enter data when the session expired.Please suggest me how to do that.
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Jan 10, 2012
I am using this method to encrypt password.. When user enters special characters it gives an error.. Method below :
private string base64Decode(string sData) {
string result=null;
try
{
System.Text.UTF8Encoding encoder = new System.Text.UTF8Encoding();
System.Text.Decoder utf8Decode = encoder.GetDecoder();
[Code] ....
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Nov 18, 2010
I have a gridview control that has two bound fields. I want to restrict the user's to enter only numeric values in the second bound column. I went into the properties of the gridview control. Selected "Columns" and clicked on collection. The fields showed up.
I selected the field and clicked on the properties. I found DataFormatString property. can I restrict by making changes to this property?
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Apr 20, 2010
VWD 2008 Express.
I have pages containing textbox controls into which names are typed. I need to be able to type Spanish characters like á ã é ũ Ñ ã ñ (I cut and pasted these from a Word document where they had been inserted as symbols). How can I enter these accented characters into textboxes using the keyboard?
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Dec 22, 2010
I used the following code to encrypt the password using md5 and store it in the database.
public partial class register : System.Web.UI.Page
{
SqlConnection con = new SqlConnection("Data Source=Shihab-PC;Initial Catalog=test;User
[code]...
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Apr 27, 2016
I am referring [URL] ....
I want to apply this function on all textboxes and text area rather than applying it on keypress event on all text boxes.
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Dec 4, 2010
how to type the user in textbox in arabic text without changing the language in their pc?! using c# .net
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May 25, 2010
we have uploded multiple documents. i want to faclitate free user to download one of file.
If Free User want to download another file then i want to show message "Register now for download this file "
If User will complete the registration from then he can download multiple files.
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Nov 26, 2010
i need a code for my web app where i want to restrict a user after...let say 10 visits....on the 11 th time when the user tries to login he/she gets a error messege denying login.maybe we can use session or cookies...but i dont want to limit..it with cookies i.e if he tries to enter after 30 days or so he is allow to login. what i raelly want is, a user has only 10 views after that he is unauthorized to login.
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Aug 23, 2010
i have 4 pages of website 2 pages are authorized to used by USER and 2 pages are restricted for useradmin can authorized to go all 4 pagesi need coding for Login window from which Admin/User Login
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Jun 22, 2010
Can anyone explain how to make unique login in asp.net
<b>Problem:</b> If user is logged at a client machine and tries to login from other client machine at the same time, then he should be prompted that "You are already logged in, Do you want to continue?" on continue user should be logged out from other machine and logged in to current machine.
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Jan 13, 2011
I have a comment control in vb.net, It works fine but the problem is if you use special characters like " ' ! $ * It never save the comment and through javascript error ( As i am using Ajax ) , Is there any workaround to save special characters aswell?
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Aug 3, 2010
I've got a program that in a nutshell reads values from a SQL database and writes them to a tab-delimited text file.
The issue is that some of the values in the database have special characters (TM, dash, ellipsis, etc.) When written to the text file, the formatting is lost and they come across as junk "â„¢ or â€" etc"
When the value is viewed in the immediate window, before it is written to the txt file, everything looks fine. My guess is that this is an issue of encoding. But, I'm not real sure how to proceed, where to look, or what to look for.
Is this ASCII or UTF-8? If it's one of those how do I correct it before it's written to the text file.
Here's how I build the text file (where feedStr is a StringBuilder)
objReader = New StreamWriter(filePath)
objReader.Write(feedStr)
objReader.Close()
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Jul 21, 2010
I'm fairly new to ASP.NET and have the following problem:
I add data to an Access database through a form on a aspx.-page. Now my problem is, if the user enters characters like " or & the syntax of the SQL command i send to access changes and the whole thing crashes. :-(
It should nevertheless be possible to write special characters in the Access database. How can I do that??
Seconde question:
I put a GridView under my form to display the data entries from the access database to the user. This GridView has 3 Options in every Line at the beginning (Edit, Delete and Select) by default. OK, when i klick on Delete it comes the following error message (hand-translated from german into english ;-] )
"Deleting is not suppoorted from the datasource "AccessDataSource" unless the DeleteCommand is not specified.
[NotSupportedException: Das Löschen wird von der Datenquelle "AccessDataSource2" nicht unterstützt, sofern nicht DeleteCommand angegeben wurde.]
System.Web.UI.WebControls.SqlDataSourceView.ExecuteDelete(IDictionary keys, IDictionary oldValues) +1648440
System.Web.UI.DataSourceView.Delete(IDictionary keys, IDictionary oldValues, DataSourceViewOperationCallback callback) +89
System.Web.UI.WebControls.GridView.HandleDelete(GridViewRow row, Int32 rowIndex) +714
System.Web.UI.WebControls.GridView.HandleEvent(EventArgs e, Boolean causesValidation, String validationGroup) +869
System.Web.UI.WebControls.GridView.RaisePostBackEvent(String eventArgument) +207
System.Web.UI.WebControls.GridView.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +175
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565
The equvivalent error message appears when I klick on the "Edit"-Button...
How do I have to specified the Delete and EditCommand?
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