Regex - .NET: Manipulating TextBox Input: Dash Every 5 Characters And Removing Special Characters?
Dec 21, 2011
Essentially I am trying to replicate the Windows 7 (In-Windows) activation key TextBox form. The Form where it will auto capitalize letters, remove or deny all non alphanumeric characters except dashes every 5 characters that will be auto-input.I assume this can be done with a fairly complicated replacement Regular Expression but I cannot seem to create one to fit the needs.
This is an Example of what I have right now, but it creates an infinite loop as it removes all characters including dashes, than adds a dash, which changes the text and removes the dash again.
I am trying to split a data field in VB using the split function.
The data field has the following character strings"&|:"
which I need to base my split on.
Dim elements As String() = Regex.Split(dataField, "&|:") field1 = elements(1) field2 = elements(2)
The field1 and field2 still have a trailing "&|" chracters.How do I check if the field1 and field2 have these trailing characters? How do I delete them?PS - I have tried "&\|:" as the delimiters in the split function which did not work.
I have an autocomplete box doing a search in my database. The sql command removes special characters but the textbox does not display the results because the returned results contain those special ones.For example if i type in 1234 the sql server will return 1234 and 123-4 but the autocomplete box will only show 1234. Is there a way where i can get both to display?
example. i have 2 textboxes and if there empty it says "Incorrect Information", but how do i make it that like when a person enters something into the textbox1 it can be 3 values minimum.. like it could be eather 2 letters 1 number or what ever just more than 3 values (no special characters), and on the password.. 6 values minimum (no special characters).
I'm trying to insert a - after ever 5 chars. I made this code. Private Sub TextBox1_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged If TextBox1.Text.Length = "5" Then TextBox1.Text += "-" End If [Code] ..... But the mouse returns always to the left after it enters a -.
I need the code to filter the data entered in a textbox. Although it accepts all the characters during runtime, the code should remove all the strings and alpha numeric characters except the numbers (which would be my output). I tried the following code but guess it won't do:
a = Textbox1.text Dim value As Decimal = CDec(Regex.Replace(a, "[D]", ""))
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 "Ã¢â€ž¢ or Ã¢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()
Assume the above contents resides in a file. I want to write a snippet that removes any line which has empty string "" and put escape character before the middle quotations. The final output would be: buildLetter.Append("</head>").AppendLine(); buildLetter.Append("<style type="text/css">").AppendLine();
The outer " .... " is not considered special chars. The special chars may be single quotation or double quotation. I could run it via find and replace feature of Visual Studio. However, in my case I want it to be written in c# or VB.NET
I have a text file, the file is sent to me, but this file has a particularity, because between characters get special characters, as if the file was a binary file.I put a screenshot. I need to pick up and replace these characters by the character "-", those chracters are at position 13 to 18 on all lines. And sometimes there is a "\n" character that makes it split the line, and this should not happen.
I have a datafield [Money] of datatype float.when i input currency value with $,or , it throws an error.How do I allow $ or "," to this field without changing the datatype(I know changing to type money may fix it)
I have a code for the validation for special characters but my problem is i cannot use space bar because of included for the special characters.I want to happen is i cannot input special character except for the space bar. it is possible to do that?by the way this is my code:
Private Sub txtlastname_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtlastname.KeyPress Select Case Convert.ToInt32(e.KeyChar)[code].....
I have made a report in crystal reports 10 in that i want the field only displays data without the special characters like its showing 11-00-3200-002-37 but i want it would show the field like this 1100320000237 without (-). so does any one help me to do this in crystal reports 10 not in application or software code.
I've received a text file in which the text is like this, Ã£YAHOO.COM. When I'm debugging in Visual Studio, the value I see for the character is "ï¿½"c. Firstly can anyone tell what is the character before yahoo. Is it a special character or some html character, and what is the character that I'm seeing in VS while debugging.So it goes like this, the ascii value of the character turns out to be 63.But when I write the value to a file it generates 3 characters whose ascii values are above 127.
Unfortunately, this expression is true for the space character. I don't understand why. I'm trying to determine if str contains any special characters other than the ones indicated by s. If it does, I plan to process the string further.ebassador "Find it, fix it, move on.
I get some french characters in a string etc.Is there a simple way to replace them with English equivalent with a function or a regex or do i need to do the obvious(parse each character and when acute found replace with the english one)?
how to validate a text box to accept only alphabets and numbers. no special characters. in vb.net i have tried the following code but it doesn't allow numbers but it allows alphabets only
Private Sub TextBox2_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox2.KeyPress If (Microsoft.VisualBasic.Asc(e.KeyChar) < 65) _ Or (Microsoft.VisualBasic.Asc(e.KeyChar) > 90) _ And (Microsoft.VisualBasic.Asc(e.KeyChar) < 97) _
I have a text box where users will enter 4 digits that are ONLY numbers 0-9. I have blocked all letters and less than 4 or greater than 4 digits. But, for example if I enter 10.0, it will throw an exception, due to incorrect math used later in the prog. So how can I block the use of a (.) or any special character for that matter! I am using specific msgboxes to let the user know what isn't allowed, and would like to do the same for special characters.
What I have so far:
If Val(txtEntered.Text) < 0 Or (IsNumeric(txtEntered.Text) = False) Then MsgBox("Sorry, but letters are not allowed!")
I have a label in my form which displays the text-content stored in a text file. However it is not able to display special characters like ", ', : etc. Instead it just puts a small rectangular box (same size as that of the text).
How do I get them to display these characters? Should I not use text files in this case or do I have to turn on some control-properties?
I am writing an encryption program to become more familiar with MVB (2010). What it does is take each character in a file, convert it into ASCII, perform calculations on the ASCII value and then write to a file. (I change the extension from .docx to .txt, encrypt, decrypt, change extension from .txt to .docx)
The issue that I get is when taking the file from the encrypted state to the original. When I look at the before and after .txt values, they do not match up (I have tested the program on standard text with no issues). After doing a little looking, it seems that the special characters that show up when converting .docx to .txt are not all ASCII characters. Does anyone know anything about this, where to find information about the characters, or anything else?
I'm redirecting a acronis cmd script to a text box, when its running it looks like this[code]...
im trying to capture the percentage so it can be used for a value in a progressbar. my question is how do i remove the (.)%# characters and where do i put the code i need? the update text box was needed to update the progress but without the Form3.status.Text = "" it made a new line with every percent increment