Hex In Text Box - Char-arrays To Serial
Jun 8, 2011My last post isn't even solved yet but already i'm on a new job, of which i'm not very proud. This time i need to convert the hex codes i put in a textbox as a string like this:
[Code]...
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String / Char Arrays And Whitespace
Feb 6, 2012I am developping an app which talks across a network and will eventually be used to read in a text file (on the client) and transfer it to the server. Currently, the server and client succesfully connect to each other using the Tcplistener/Tcpclient classes. I am now trying to send some data across the network using the networkstream class, which I have implemented.Currently for testing purposes i am sending a char array which contains the characters "hello" which succesfully sends and outputs to console on the server. Although, "hello" is followed by a long list of whitespaces. I have tried converting this to a string array on the server and/or client and using the string.Trim() function (amongst trying many other things over the past couple of hours) although the output remains the same.
View 19 RepliesSending A Char Down A Serial Link?
May 5, 2010I'm writing a program that sends data to a micro controller via an RS232 serial link.
What I'm asking is am I using the correct code to transmit a number as a char, the code i'm using to send a number 2 is:
Private Sub MsToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MsToolStripMenuItem.Click
SerialPort1.Write(Chr(2))
End Sub
Function Which Take String (alfanumeric+special Char) As Input And Return Serial Key
May 6, 2010i want to generate a serial key which depend on system harddisk manufacture id ...
so Is any function which take string of alfanumeric + special char as input and after encrypted return output as unique serial key / product key...
File I/O And Registry :: Read Char By Char From A String?
Dec 16, 2008i want to read a character 1 by 1 from a string and a .txt, i know all about stream reader so for the .txt would it be somthing like:textbox1.text = tr.readCharacter.i would prefer to be able to read from a textbox or String array though.
View 10 RepliesValidate String To Have No Space Char And Only First And Last Char As Delimeter
Mar 30, 2012I need validation for string to comply with next: no space char starts with one delimiter char ends with one delimiter char has no other char as delimiter char. Updated sorry missed that should only be one delimiter char at start and at the end
View 2 RepliesOperator '-' Is Not Defined For Types 'char And 'char'?
Sep 30, 2010Public Shared Function UrlTokenDecode(ByVal input As String) As Byte()
If (input Is Nothing) Then
Throw New ArgumentNullException("input")[code].....
Sisplit The Text Into 48 Char Lengths?
May 9, 2011simple loop code to split a text which is displayed on the text box. All that will need to do is split the text into 48 char lengths.
View 11 RepliesDetermining If A File Is Text/ASCII Char Only?
Jan 26, 2012Simple question, what would be the optimum code in VB2010 to read in a text file and verify that:1) It is a text file, and2) There are no non-ASCII characters anywhereAnd conversely, we would want the code to provide a warning if the file is not a text file, or if the text file contains non-ASCII characters. [Note that LF, CR and EOF are expected to be in the text file, and should not be flagged as errors]
View 1 RepliesSplit Text But It Always Have A Return Char With It Array?
Aug 2, 2011I try to split my text but it always have a return char with it array.
This is the code.
text_as_list = Split(ControlChars.CrLf & Trim(text))
How can i split on a new line and split on white space at the same time?
Separate A Text Input From A Form Into A Char Array
Apr 14, 2011I am wanting to create a char array that consists of input from a form text box. I am unable to determine how to index the Char array to accept input letter by letter. if i assign the array a specified length, i am not allowed to set the strID.toCharArray to it. If i choose no index am told the value is less then the array size. I have tried many different ways, including using a counter to increment the array, but i am unable to index the array.
[Code]...
Test A String Of Text That To Contain A Certain Type Of Char Values?
Dec 1, 2011I need to test a string of text that needs to contain a certain type of char values. The known is allowing of a-z,A-Z,0-9. But the variable (which will be coming from a database field) will be the allowed symbols. The allowed symbols will look something like:!@#$%^&*()
So using regex, how can I check a string of text to make sure it ONLY contains a-z,A-Z,0-9 AND the allowed symbols as shown above? Remember, the allowed symbols is dynamic at run time so I need to somehow be able to plug that in to the method at run time.
The following examples would be valid using the above symbol string:
Test1234%
Test1234
The following example would NOT be valid:Test1234%_
Increment A Char - Turn Char A Into B?
May 19, 2009i am trying to increment a char in vb.net, eg: Dim letter As Char = "a"c. and i want to make it b, and so on. how can i do this?
View 1 RepliesError When Aligning Text And Setting Password Char In Runtime
Dec 31, 2011I have very new to VB. I was just fiddling and ran into this. I cant set the text alignment of a text box twice with the focus events as well as cant set or reset the password char property. The code is given below:
Private Sub tbxLogin_LostFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles tbxLogin.LostFocus
If tbxLogin.Text = String.Empty Then
'tbxLogin.ResetText()
tbxLogin.ForeColor = Color.Gray
'tbxLogin.TextAlign = HorizontalAlignment.Center
'trying to align the tbx gives it focus
[Code] .....
Copy The Char Array To An Int Array With The ASCII Values Of Each Char?
Mar 22, 2012I have split a string into a char array, now i need to copy the char array to an int array with the ASCII values of each char.Donīt know how to do it without looping each value.
This is my code:
origen = RichTextBox1.Text.ToString
Dim valor As Char() = origen.ToCharArray
Dim numeros As Integer() = (How can i convert "valor" to an int array?????)
What Is The Difference Between Char And [char]
Jun 5, 2009i have found [char] specified in some of the examples at msdn , what is the difference between char and [char]
View 2 RepliesVS 2008 Using Text With Arrays.
Aug 14, 2011Say you have a Combo Box with a List of Months in it.When a Month is Selected, the number of days in the Month is displayed in a nearby Text Box.
View 1 RepliesFile I/O And Registry :: Opening A Text File Into Multiple Text Boxes Using Loops And Arrays
May 20, 2009So I'm in the final stages of finishing a program I've been working on for nearly a year now, and this is basically my final hurdle. The Save dialogue is working beautifully, with 'flags' in order to switch it over from the regular input into text boxes to the Listbox input protocol.
However, I'm having a *** of a time getting it to take lines from the text file and put them in the proper text box. Here is an example file:
Quote:
SHOWNAME
CALLNAME
BREED
[Code]....
So with the sample file I provided above, in the textbox named callNameText would appear "SHOWNAME", and so on and so forth. With this build, I get a NullReferenceException on the "Me.Controls(strboxNames(i)).Text() = strAllText(ati)" line.
Multiple Arrays To Text File?
Apr 29, 2010trying to save users names and passwords from input boxes and save it as arrays in text file that in future multiple users will log in with their names and passwords
have this code so far but doesnt realy save the user info to file, dont even create file.
Imports System.IO
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code].....
Saving Arrays To Text File?
Apr 28, 2010arrays saving to file that if new user account is added name and email address is saved. if in the future multiple users login in whe name and email address will match correct users.
here is what i got so far....
Public Class Form1
Public strName, strSurname, strEmail, strPassword As String
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
[Code].....
StreamWritter Arrays To Text File?
Apr 29, 2010lads, I'm having problems with saving user input to text file. Need use the streamWritter to write users names and passwords to text file I gues the arrays would work out but the code is mess and I'm stock with this:
[code]
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim file As System.IO.StreamWriter
[Code].....
Writing In Text-file Using 2 Arrays?
Nov 2, 2011I'm trying to solve a problem I'm having with writing in a text file using 2 arraysthe first array is the normal text, line by line.g.
dim arrCode as string()
arrcode(0) = "This is the first line"
arrcode(1) = "The second line etc."
[code].....
IDE :: Can't Display Text During Serial Transmission
Feb 10, 2010I am using this routine to send one line of text to a serial port.The text file is made of many lines. This code works except for TextBox1 line.I like to print * signs for every line sent to indicate the system is working.[code]The routine waits and pumps out all of the * signs after the transmission is completed.
1- How can I place one * per line of transmission in TextBox1?
2- Is there an easy way to add 15milisec of delay at end of each line?
Random Text In Serial Read?
Feb 1, 2012im reading a serial com port (Ardunio FTDI presented as a com anyway). It works fine for a few seconds then randomly I get random text, Ive tried a few different settings but there dosnt seam to be a specific trigger for the randomness.Ive read a few notes about a known buffer overflow issue and checked it in terminal where it's fine. This is my first return to VB in 10? years so im more then alittle rusty but this has me stumped,
Private Sub Timer2_Tick(sender As System.Object, e As System.EventArgs)
Handles Timer2.Tick
Dim LineOfText As String[code].....
Read Text From Serial Port
Oct 13, 2009i cannot read data from my serial port..i am using HYPERTERMINAL on my other computer(computer 2)..i can send data from my computer(computer 1) and it showed on computer 2..but when i type things into my HYPERTERMINAL in computer 2, the Visual Basic program cannot read it??this is my code:
[Code]...
Update The Serial-number By Using A Text Box?
Jan 4, 2010i want to update the serialnumber by using a text box,,,,suppose i am updating the serial number as 3,,,,it was updated,but if i wants to update the serial number as 4 ,that is already in the database it is also updated..but actually it is not updated..but it is updated.........
Protected Sub Button3_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button3.Click
Try
Dim conn As New SqlConnection(ConfigurationManager.ConnectionStrings("guest1").ConnectionString())
Dim adp As SqlDataAdapter
[code]...
VS 2008 Serial Data To A Text Box?
Aug 21, 2010I have a PIC program written in PicBASIC pro that sends out variables in word (ie 260, 458 etc). I would like to write a simple one form application that displays these variables in a box like this (just a mocked up image)In my search for VB code examples on how to use the serial port I came across one basic but functional example
Imports System.IO
Imports System.IO.Ports
Imports System.Net
Imports System.Data
[code]....
This is correct as there is only one variable that contains data at the moment (Temperatures(2) ), so the values are 0,0,261,0 for the first line. the increase in temperature was reflected in subsequent readings as it went up to 26.6C and then 26.8C.However I am now stumped... I don't know how I can adapt the code to brake the data up into the 4 variable and place them in to 4 different text boxes.
Read And Write From One Text File To Two Arrays?
Apr 10, 2010I've been making a program whereby users names and numbers must be stored in external files. At the moment I can get the names to read and write to a file with these lines:
Imports System.IO
Public Class frmDefaultMenu
Private Sub frmDefaultMenu_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code].....
Where each line has a name, a seaparator (,) and then the corresponding number.
When the program loads I would like it to be able to access that file, and store all the names into an array named ExistingUsers() and all the Numbers into an array called ExistingNumbers(), and then when a new name is added in the textbox, it is assigned the number "100" and placed at the end of the array, then when the application quits OR straight away, the external files are updated.
Set X,y,z Values From Text File Into Separate Arrays
Nov 7, 2011I have been trying to find out how to do this for days now, so I am finally asking how. I am newish to programming. Here is my problem.
I am trying to extract x,y,z coordinates from a text file arranged as such:
x,y,z
x,y,z
x,y,z
etc.
I need to be able to extract the x column into an array, the y into an array, and the z into an array. I learned how to pull it into a string, and how to split for every line, but i don't know how to split after each comma and separate them.
Upload Data From Text Files Into Arrays?
Jun 12, 2011I have text files that are formatted like the following[code]...
I was wondering how to code a button that will get the title in the first line and set it as a variable and then create four arrays (one for each column: number, date, description, number).