Say I open a text file in a richtextbox control. After that I search for a specific string like "6.1". The string actually continues like "6.1XXXXXXX". I need to get not just only "6.1", but also 2 more chars after "6.1", like "6.1XX". I will then output this in a textbox, but I can do that, I don't know how to get the X number of characters.
View 4 RepliesI have a query to solve for which I have coded. But my code produces output only for those hardcoded values found in the text file. I have a text file which is given as the input to my code. The text file contains lines with "_DIA" , "_DIA_some number" etc. In this case I need to remove few letters from that field.
Eg: 1)if the name field contains 1234567_DIA_2.PRT, I need to remove "_DIA_2" from the name field and concatenate the .PRT with the number. 2)if the name field contains 1234567_DIA1.PRT, then remove "_DIA1" and concatenate. I need to store the number of characters removed and add so many number of blank spaces with the name field after the concatenation.
for the 1) case I need to concatenate and add 6 spaces with the name field. for the 2) case I need to concatenate and add 5 spaces with the name field.
I'm not sure how to find the number of characters from "_" to ".", underscore need to be considered in the counting and the dot(.) should not be taken into account.
I'm attempting to modify some random password generator code, and wanted to do something a little different. I would like to list all uppercase, lowercase, numeric and special characters next to a text box. In the four text boxes, you would select how many characters from each set you would like in your password. For example 4 uppercase, 2 lowercase, 3 numbers and 2 special characters. That would generate a random password 11 characters long. I can generate random passwords now, and have included a text box which allows the length of the password to be specified, but i would like the granularity of selecting from each set.[code]
View 7 RepliesIs there a function in VB.net that allows me to divide a really long String into a specific number of characters? [code] The length of this string is 18 and I'd like to group it by 3, so each group would contain 6 characters. Is there an easier way of doing this? Is there a predefined function in VB.net? I'm already thinking of doing it manually, like converting the string into characters and storing them inside arrays.
View 1 RepliesI need to format a string in a fixed number of characters.
For example, if someone type TWO
It has too save in the variable
000TWO
if type THREE
0THREE
Always 6 characters and fill the rest with zeros on the left.
I'm using this code to return some string from a tcpclient but when the string comes back it has a leading " character in it. I'm trying to remove it but the Len() function is reading the number of bytes instead of the string itself. How can I alter this to give me the length of the string as I would normally use it and not of the array underlying the string itself?
Dim bytes(tcpClient.ReceiveBufferSize) As Byte
networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize))
' Output the data received from the host to the console.'
[code]....
Len() reports the number of bytes not the number of characters in the string.
For a project I need to do a String strX is said to be a cyclic rotation of a String strY if it's possible to rotate the characters in strY by some number of positions, n, such that strY becomes strX. I don't mean rotate in a Caesar sense here but in a left-right (or right-left) sense. For instance, strX = abanan is a cyclic rotation of strY = banana because rotating the characters in banana to the right by n=1 (i.e., by one position), wrapping accordingly, yields abanan. Similarly is strX = anabana cyclic rotation of strY = banana because rotating the characters in banana by n=3.I need to write an application that returns True if strX is a cyclic rotation of strY otherwise the result is False. I'm looking into how to do this, I know it will involve and if then statement and possibly some loops. Is there anyone who can help me better understand what I should do?
View 4 Replies1) Is it possible to set the maximum number of characters that a string can hold?
Just like the following example from VB6:
Dim my_var As String * 10
2) I noticed that Option Base 1 does not exist. I created a table my_table(2) and tried to msgbox the following[code]...
I want to user to enter only numbers and characters in textbox i.e no special charaters.I don't want to use key press event of textbox.As i need same validation in gridview.
So i want to validate whole string.
In order for me to increment a Number, It's just too easy.Here's How to Increment a Number.[code]
View 5 RepliesI may have a string for example potato in a vb.net application. I want to find all the occurrences of o and convert them to 0, so the desired out is: p0tat0.I know it can be done by the provided string operations but I need a regular expression in my scenario.
View 1 RepliesI would like to ask for some on how to create a random string with number and letters in 8 characters long in VB 2008
View 1 RepliesI have a string of characters, but I would like to have a string of hexdecimal characters where the hexadecimal characters are converted by turning the original characters into integers and then those integers into hexadecimal characters. How do I do that?
View 3 Repliesi have been trying to remove special characters. i am not able to remove many crlf in middile of the string.
View 3 RepliesI need to create a console program that allows you to enter a string, of which is then outputted in reverse.
Sample:
Input: Diewas
Output: saweiD
Apparently I need to find out about strings and will also need to use a loop.
Not sure if too many people know this, but the following line will cause an error:
GroupName.Substring(0, 3) = "jt_"
....if the length of GroupName is less than 3 characters. I always thought it would simply return whatever characters in GroupName, but no, it errors. I must be thinking of the old VB6 days.So, I now have to change the code to:
If (GroupName.Length > 2) Then
If (GroupName.Substring(0, 3) = "jt_") Then
Note that the two comparisons need to be on separate lines. If they are on the same line, such as:
If (GroupName.Length > 2) and (GroupName.Substring(0, 3) = "jt_") Then then the code will still fail as the length command is executed at the same time as the substring command- which will cause the error when the GroupName length is less than 3.Just thought that those of us not aware of this should be!
dp.SyntaxHighlighter.ClipboardSwf = '/dp.SyntaxHighlighter/Scripts/clipboard.swf'
dp.SyntaxHighlighter.HighlightAll('9844f9bfb55449e6a786fa62aaadfa20')
dp.SyntaxHighlighter.HighlightAll('f6d554fd98464bdba9159b319e51b381')
dp.SyntaxHighlighter.HighlightAll('93bf4ca63ad8447abdf084d8a9991e15')
I've written a piece of code that takes 3 fields from a database and writes out the 3 added together, but with the middle field cropped down, so that the total number of characters is always 28, what I thought was the width of my listbox. I realised when I debugged though, that the listbox was docked and grew or shrank depending on the size of the screen.
Is there a way to determine how many fixed width characters will fit in a control, at run time?
I want to restrict the number of characters you can put into a textbox.
View 7 RepliesDoes anybody know how to to count the number of characters typed in a text file and display in a label? I'm making a simple application on vb 2008 that needs to calculate the number of characters in a text file. The user will enter the text file in a text box. The file will be located somewhere in my hard drive.
[Code]...
Say you have the following string: Welcome to my program!
But you only want it to show a certain amount of characters then "..." so it would look like this: welcome to m...
I'm addressing this problem because I'm making a tabbed web browser and when I create tabs I have the document title as the text, but It looks weird without it cut off, so I wanted to know how I could replace the text after say, 15 characters with
I have written a program that uses an array of the english alphabet and Morse code. I also built a form with a input box for the alphabetic information and an output box with the Morse Code. What i am trying to do is basically type a word like "Hi" in the input box and produce the Morse Code equivalent in the Morse Code output box. [Code] This works but only one letter at a time. Do i need to Parse the string of characters one at a time, and then run it through a loop like i have created?
View 6 RepliesI have a RTB which I import with a set of 7 or 9 didit numbers, 7 for Staff and 9 for Students. e.g. Staff numbers [code]and depending on what is selected in a list box ('Student' or 'Staff') will generate a string to create user accounts. To further error check I would like to check if a line in the RTB = 7 And Listbox = "Student" Then msgbox("Data mismatch between User ID and Account type")
View 4 RepliesI have been looking for the best way to obtain the total number images in a folder where the first two characters on the file name are XX and place this number into a variable.[code]...
View 1 RepliesI did this for one of my homework assignments in C#. However I need to do this in Visual Basic. For VB it just needs to be 6 characters and have one numeric digit and at least one alphabetic character.
Private Sub btnVerify_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnVerify.Click
public string getPassword()
End Sub
Private Function IsValid() As Boolean
[Code] .....
I'm currently building a Terminal Emulator and can read RS232 data ok into a Textbox.
However, I want to remove a set number of characters before each line received.
I've got so far with StringBuilder but my code is wrong somewhere as it cuts out every other line.
The original text looks like this:W 320:15:25 0300 SAMPLE FLOW WARN
T 320:15:25 0300 CO= 4.6 PPM
T 320:15:25 0300 RANGE=50 PPM
T 320:15:25 0300 STABIL= 0.0 PPM
T 320:15:25 0300 CO MEAS=4012.0 MV
T 320:15:25 0300 CO REF=3457.3 MV
[Code]...
Is there any container that would hold a number that is 10,000 characters in length? would I have to create one? If so how would I go about doing something like that?
View 5 RepliesIs there a way to allow the user to only type in a certain number of characters in a datagridview column? Like a invoice number can only be 1-6 digits long and I want to stop them from typing more than 6 digits.
View 7 RepliesI have a string like 0010000.abc. Is it possible to print just the first 3 characters of the string i.e 001?ajaind
View 1 RepliesHow to count no. of characters entered in multiline textbox, i wanna enter maximum 140 characters in my multiline textbox using vb.net ...
In short i want textbox to enter limit is only 140 characters .[code]...
Assuming that I have a Windows Forms textbox and want to reduce the maximum amount of characters that can be allowed in via user entry, how would I do that?
View 2 Replies