Web Forms :: ValidationExpression To Just Accept A-Z, 0-9 / Hyphens / Underscores / Spaces?
May 11, 2010
Using a RegularExpressionValidator, I want my textbox to accept a max of 20 chars, and only English characters A-Z (upper and lowercase), 0-9, hyphens (-), underscores (_), and spaces. That's it.
Now that I think about it, since this text will be used by a proprietary software to create a file of the same name, and will also be included in the querystring when the page is redirected (so that I can find the file so the user can download it), I'm not sure if I should keep it safe and not accept spaces.
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.
[ActionName("about-us")] public ActionResult EditDetails(int id) { // your code }
The above works for actions but I would like to be able to do the same (or similar) for controllers, ie have a hyphen in the URL name too. Is there any easy way to achieve this (I tried the ActionName attribute but no luck)
I am attempting to compare one of ASP.NET's membership userID's with the current userID in an SQL query, however because of the "hyphens -" in the uniqueidentifier field type of userID, i am unable to compare the ids. is there a way around this? (in my example, family_id from tblFamily is the userID that has type uniqueidentifier). my code as it stands is:
Dim UserID As String = New String(Membership.GetUser(User.Identity.Name).ProviderUserKey.ToString()) Response.Write(UserID) Dim strConn As String = ConfigurationManager.ConnectionStrings("ApplicationServices").ConnectionString Dim SQLI As New Data.SqlClient.SqlCommand("SELECT family_name FROM tblFamily WHERE [family_id] IS " & UserID & "") Dim sqlCon As New Data.SqlClient.SqlConnection(strConn) sqlCon.Open() SQLI.Connection = sqlCon Dim RSI As Data.SqlClient.SqlDataReader = SQLI.ExecuteReader() RSI.Read() Dim FamilyName As String = "0" While RSI.Read FamilyName = Convert.ToString(RSI("family_name")) End While Response.Write(FamilyName) RSI.Close() sqlCon.Close()
I've heard from a couple of different sources that when using HTML helpers in ASP.NET MVC2, one can create custom attributes with dashes in them (e.g. <a data-rowId="5">) by using an underscore in place of the dash, and when the HTML is written to the page the underscores will be replaced by dashes.
So, something like this:
<%= HtmlActionLink(Model.Name, "MyView", null, new {data_rowId = Model.id}) %>
should render as
<a data-rowId="0" href="myURL">Row Name</a>
But... it's not. I think that maybe this feature is only enabled in the MVC3 Beta preview (as it's mentioned in the MVC3 preview release notes), but this thread is about the same thing, and it's regarding MVC2.
I know I can use the other solution presented in that thread, but I'd rather not have to resort to using the dictionary if a more elegant solution exists.
i am generating a wcf data contract from a schema, using svcutil /d: option, however the enum of type xsd:int in schema is generating all the values as ints, with underscores, obviously to make valid code. How can i get the actual value of 1000
E.g Enum Impact with values 1000,2000,3000 generates code
I'm very new to asp and vb.net, I've just learned about regular expression validation but one thing is bugging me: How can I hide my expression from being viewed on my source code?
The plan is to make a very simple 'login' type of page. I know this goes against all that is holy in this kind of operations, but it's just something I'd like to try out.
Also, after the expression has been validated, I want to load another page, I was thinking of achieving this with:
i have this ValidationExpression="(d{1,}.{0,2} .{2,})|(.{2,} d{1,}.{0,2})" used in regularexpression validator. I want to use the same one in a customvalidator. But customvalidator does not have option validationexpression. how can i add this in code or in tag.
I'm trying to implement a RequiredFieldValidator with a ValidationExpression which is fail validation if the value is -I'm guessing there will probably be a very simple RegEx for it but I am still trying to get my head around it.
I found the answer to this, but it's a bit of a gotcha so I wanted to share it here.
I have a regular expression that validates passwords. They should be 7 to 60 characters with at least one numeric and one alpha character. Pretty standard. I used positive lookaheads (the (?= operator) to implement it:
(?=^.{7,60}$)(?=.*[0-9].*)(?=.*[a-zA-Z].*)
I checked this expression in my unit tests using Regex.IsMatch(), and it worked fine. However, when I use it in a RegularExpressionValidator, it always fails.
I've finally figured out an issue I'm have with a zip code field being entered in a text box of a details view in edit mode. I'm trying to understand why i have the issue though. I don't understand why it keeps occurring.his what happens with the zip code field. I've been able to make it reoccur numerous times. If the details view is put in edit mode and the record is updated with the original 5 digit zip code, unaltered in any way, my regular expression validator catches it and doesn't let the update happen. If I change the replace the 5 digit zip code with a new one the update goes through fine. This new value can be a different or the same 5 digits and the update will work. If I don't change the value at all though the update will not go through.
How can I make this regex not accept spaces?: [0-9a-zA-Z' ']{3,}
Everything I'm reading says to put a * or a + after the [] , but I get an invalid expression error when I do. The end result I'm looking for is a string of letters and numbers only - no spaces inbetween.
I have a textbox where email addresses are displayed at the click of a button. There is one problem, before the first email address there are two empty spaces. Is there any way of getting rid of them? The result looks like this: " emailaddress; emailaddress; emailaddress;"
I have a simple issue..the user types his/her name in a textbox. Accidentally if a space is entered after a name or before, is it possible for me to trim it while accepting and not raise any error (which actually arises when the textbox is empty)?
i have text box, i want to enter age in to that,if i enter "Text" into that that text should not enter into that.only numerics only enter. Alphabetic key must be disable for that text box.
I have a javascript to validate and avoid null values for my form but there are some textboxes that I need to be 'optional'. I tried erasing the validation for province address and province contact in javascript to make it optional, but the problem is whenever I add the values in the database, an error message appears "Input string was not in a correct format". It's in C# This is my present code wherein the provincial address and provincial contact must only be optional:
In my registration form, there is field to enter emailid of member, i want to restrinct user, so that he would able to enter to only three domain name like gmail, hotmail, yahoo like this emailids.
