File I/O And Registry :: Read Char By Char From A String?

Dec 16, 2008

i 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.


Validate String To Have No Space Char And Only First And Last Char As Delimeter

Mar 30, 2012

I 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

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Read The File - Error "Option Strict On Disallows Implicit Conversion From String To Char"

Mar 9, 2012

When I try to read the file, I am getting an error = "Option strict on disallows implicit conversion from string to Char"


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Operator '-' Is Not Defined For Types 'char And 'char'?

Sep 30, 2010

Public Shared Function UrlTokenDecode(ByVal input As String) As Byte()
If (input Is Nothing) Then
Throw New ArgumentNullException("input")[code].....

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Increment A Char - Turn Char A Into B?

May 19, 2009

i am trying to increment a char in, eg: Dim letter As Char = "a"c. and i want to make it b, and so on. how can i do this?

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Error When Read File (on 2nd Instance Of Software) - Output Char Buffer Is Too Small To Contain The Decoded Character

Apr 16, 2012

So I tries to read txt file to memory, sometimes (just sometimes) I getting this error: The output char buffer is too small to contain the decoded characters, encoding 'Unicode (UTF-8)' fallback 'System.Text.DecoderReplacementFallback'. Parameter name: chars


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Copy The Char Array To An Int Array With The ASCII Values Of Each Char?

Mar 22, 2012

I 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.Don´t 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?????)

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What Is The Difference Between Char And [char]

Jun 5, 2009

i have found [char] specified in some of the examples at msdn , what is the difference between char and [char]

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Read Individual Char In TextBox And Send To Comm?

Apr 11, 2011

May I know instead of using WriteLine(MyTextBox.Text) to send data to a serial port, how do I send character by character? Use BaseStream.Write?


Dim ComLine As Ports.SerialPort

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.net String To Char In C?

Jul 14, 2011

I have a DLL that I am importing:Declare Function QueryInfo Lib "mydllname" (ByVal DevName As String, ByVal pcQueryParam As String, ByVal Result As String, ByVal Length As Int32) As Int32


Anyone have an idea what the issue could be? If I run similar code in VB6 (only diff is mtStatus = String(mtValueSize, Chr$(0)) ) it returns what I expect.

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Why Is String Returning A Char

Jun 27, 2012

I have built a DataTable from my database. Then I am looping through the rows and trying to access a string, however the value is being returned as each character in the string.

For Each theseRows In DisplayForm.MainTab.Rows
If theseRows.Item("Last_Name") = userLast And theseRows.Item("First_Name") = userFirst Then


The Trap_Code values are two or three letter strings, the returned value is each letter once at a time. The loop seems to cycle through the individual characters of the string as an array rather than display the entire value, which is what I was hoping for.

View 2 Replies View Related - Remove Last Two String Char?

Aug 24, 2009

The following code:

If checkboxList.Items(i).Selected Then
.Fields("DESC1").Value += checkboxList.Items(i).Text + ", "
End If

should produce output such as "A, B, C,(space)", which will then be bound to a dynamically created GridView. I would like to remove the last two-char string, that is ",(space)". How can I do this?

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Convert String To Char?

Jun 5, 2011

I am writing a database and need to post a value in a lable to a sql field.the sql datatype is set to money.when posting i have

CMD.Parameters.addwithValue("@Claim", LBCLAIM.text)

when posting i gett an error

cannot convert a char vaule to money. the char vaule has incorrect syntax.

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Cut The 1st 3 Char In A String With Vb 2008?

Apr 29, 2009

how can I cut the 1st 3 char in a string in vb 2008?

For example:
Dim i As String = "ABCDEF";

I want to only cut the 1st 3 char and the system will only display "ABC" after the 'cut' action done.

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How To Convert String To Char

May 27, 2012

I want to convert say Input: textbox1.text=blabla Output: blabla becomes into: textbox2.text=(char45 & char34 char45 & char34 char45 & char64 )


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Move First Char In String To The End?

Apr 28, 2011

Im wanting to create a function that receives a string and moves the first letter to the end and returns it.

Public Function moveLetters(ByRef word As String) As String
Dim length As Integer = word.Length
Dim chars(length) As Char


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Remove Char From String?

Oct 29, 2008

what is the best way to remove FileFinder1 from this string:

"C:Program FilesFileFinder1"

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Using Char - First Letter Of String Must Be Certain

Apr 18, 2010

Basically the first letter of a string must be a certain letter. At the moment the only way I know how to do it is as follows:
If sConsignmentNo(0) = "J" Or sConsignmentNo(0) = "C" Or sConsignmentNo(0) = "U" Or sConsignmentNo(0) = "N" Or sConsignmentNo(0) = "H" Or sConsignmentNo(0) = "S" Or sConsignmentNo(0) = "V" Then
Basically listening the same thing out over and over. Is there a way I can say, If sConsignmentNo(0) = ListOfValidEntries i.e J,C,U,N etc?
Using Visual Basic 2008 and cant use regex!

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Converting A String To A Char Array?

Mar 23, 2012

I have a string like this.

Dim str As String = "code"

I need to break this string down to an array of characters like this,

{"c", "o", "d", "e"}

How can I do this?

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Find The Index Of A Char In String?

Aug 20, 2011

I have a string that goes like "abcdefg..."

I would like to find the index where the letter d is at, so I can get the number 3.

I managed to do it by looping through each letter in the string, but that doesn't sound very convenient.

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Function To Test First Char Of String?

Jan 15, 2012

Function to test first char of string

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How To Check If Theres A Specific Char Within A String

Nov 10, 2008

my question is how can i check a string for a specific char (for example, in the string:"242.421" theres the char "." how can i make a rule so that char can only be typed once... (in a textbox) so when a user click the "." button on their keyboard it won't allow it again (more than once)

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Replace A Char From String At Specified Position?

Apr 29, 2011

Hello all, im now trying to create a way to replace the last char of a string with "4"[code]....

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Replace Char At Specified Index Of String?

Dec 1, 2009

I want to replace a char at a specified index of a string.

Short of using the .Remove and .Insert methods I was wondering if there is an easier way.[code]...

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Splitting String With Array Of Char

Jun 14, 2011

I want to split a string with this array of char
Dim sepa As String = " '"",.;:(){}[]·#|-_<>+¿?=/&%$‚¬@!¡"
The question is how do I include in this string vbcrlf? So I can do the fallowing:
dim palabras as String() = RichTextBox1.Text.ToString().Split(sepa)

I tried:
Dim sepa As String = " '"",.;:(){}[]·#|-_<>+¿?=/&%$‚¬@!¡\r\n"
But it does not work.

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String / Char Arrays And Whitespace

Feb 6, 2012

I 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.

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String Char Strange Appearance In XML

Feb 17, 2011

Why when I wrote in a xml the char "&" it appears &amp; ??

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VS 2010 Way To Insert Char Into String?

Feb 24, 2011

I have string that is equal to 112233. I need to insert "-" after every second char in string so i wrote the

Dim str1 As String = "112233"
Dim str2 As String = ""
Dim i As Integer


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Copy The Value From String To Char Array Using String.CopyTo() Method?

Jul 13, 2010

I am trying to the copy the value from string to char array using String.CopyTo() method.

Here's my code

Dim strString As String = "Hello World!"
Dim strCopy(12) As Char
strString.CopyTo(0, strCopy, 0, 12)


Edit : I get the this error at runtime.ArgumentOutOfRangeException Index and count must refer to a location within the string. Parameter name: sourceIndex

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.net - Count The Number Of Occurrences Of A Char In A String?

Mar 30, 2012

Count specific character occurances in string

I have a delimeter in string that i have to validate. How can I count occurrences of that char. For now i have a next function.

Private Shared Function CountChars(ByVal value As String) As Integer
Dim count = 0
For Each c As Char In value


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C# - Built-in Function To Repeat String Or Char In .net?

Nov 6, 2010

Best way to repeat a character in C#

I wonder if there is a function that returns x times of given char or string. Or I must code it?

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C# - Extract Char By Sequence In A String Vb 2010

Dec 24, 2010

I have a text in richtextbox1, i want to extract each 3 char of the string and so on, like:


How can i do it ? Code can be in C# 2010 i will translate to 2010

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Generating A Globally Unique ID Of 16 Char String?

Jun 18, 2009

I need to generate a globally unique ID of fixed 16-lengthThe GUID is too long for my purpose. So I wonder is there any way to convert it to a 16-length?If this is not possible, I have a program key of 8 chars, and is thinking of using the DateTime as my key.

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VS 2005 Converting System.String To Char

Dec 10, 2009

how to convert system.string to char for label text?? Here it my


I need to get the strings from the site and input the fields strings in the label text, so I needs to convert char of system.string but i don't know how to fix it.

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VS 2008 : Strip Every Other Char From String Or Array?

Jul 7, 2009

I need to strip every other char from an array or string. Whichever is easier.

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What Is The Difference Between VbTab And The Typed Tab Char In String?

Oct 16, 2010

data as string =webbrowser1.Document.Body.InnerHtml
Dim chqSavgBalHdg As String = "Chequing / Savings" + vbtab+ "Balance"
dim idx as integer = data.IndexOf(chqSavgBalHdg) ' got -1 ??? why while
idx = data.IndexOf("Chequing / Savings Balance") ' use the physically typed tab key before Balance here
' got some +ve number in idx

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C# - Remove Duplicate Char On String (more Than 3 Occurrences) Using Regex?

Jan 13, 2012

I'm sorry if it's a duplicate of some question but this is specific on Vb.Net Regex function.

I need to remove any occurrence of 3 or more duplicate characters on a given string. For example:

Dim strTmp As String = "111111.......222222 and 33"
Dim output As String = Regex.Replace(strTmp, "????", "")

The "????" part I guess should be the Regex expression, which I must assume I know almost nothing about.

I don't know if that's the correct syntax. But I need the output to come as:

"1.2 and 33"

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Test A String Of Text That To Contain A Certain Type Of Char Values?

Dec 1, 2011

I 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:


The following example would NOT be valid:Test1234%_

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Bug Using String.format() - Automatically Add Crlf After Char Position 1025?

Jul 6, 2011

I've found this strange behaviour, I'n using vS2010 sp1 on a x64 machine in a class library project (VB) with FM4.0, there is added automatically an crlf to the concatenated string using string.format() funtion, you can reproduce this using the following lines of code:


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Can A LINQ Or A LAMBDA Expression Be Used To Count The 1's In A Binary String Or Char Array

Sep 15, 2010

Can a LINQ or a LAMBDA expression be used to count the 1's in a binary string ?For example, if I convert a number to its BINARY using.>>

Dim binaryString As String = Convert.ToString( numberVariable, 2 )

1) Without using a loop such as a FOR NEXT loop, can I count the number of 1's in the STRING using LINQ or a LAMBDA expression?

2) Can I get the indexes of where the 1's are at in a collection such as a LIST using LINQ or a LAMBDA expression?I know the syntax of some LINQ expressions, however, I don't know which method may be suitable.

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