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?
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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].....
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 RepliesXOR For Each Two Char
Dec 12, 2010I have a textbox with value in it like: "577457747037375770" and so on, i want to XOR each value of them with "0x1b" how can i do that ?Like "0x1b" XOR 57 ; "0x1b" XOR 74 ; "0x1b" XOR 87 and so on for all value in textbox.I don't want to check if the value in the textbox is in the good format, i want just XOR them all.
View 2 Replies.net String To Char In C?
Jul 14, 2011I 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
[Code]...
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.
Getting A Char Return Value From A DLL?
Sep 27, 2010I am currently using a C .dll file in my vb.net project, and need to access a string that it returns (as a pointer to a char array). How can I access this?
Private Declare Function src_error Lib "libsamplerate.dll" (ByVal err As Integer) As (???) 'i've tried intptr, string, integer, none work
<MarshalAs(UnmanagedType.LPTStr)> Dim ptr As String
...and then in the actual function,
ptr = src_error(6) 'returns an error based on what combination of things I've tried
Use A Char In A 'command'?
Feb 10, 2012First things first, sorry if this is in the wrong section and sorry if it has been answered many times before. I have no idea what to search for.
I have two integers and a char which is a maths operator (+ - / * ). What I would like to do is use the operator and pass the answer to another integer. Something along the lines of "Integer3 = Integer1 (Char) Integer2".
What Is The Replacement For Char* In .Net
Apr 8, 2011i have a C++ DLL. What i am doing is that i am passing memory address to my C++ dll where it write message on that address and i want to read the message from that memory address.
Here is my C++ function.
int _stdcall Test(int res, wchar_t *text)
Now in my C#.Net test app .. if i use unsafe char* .. i am getting proper output.
Declaration
static extern unsafe int Test(char* msg);
Implementation
[code].....
Now implementing in vb.net i am getting jst 1st character by using stringbuilder.
Dec
Private Shared Function Test(ByVal msg As StringBuilder) As Integer
Imp
[code].....
What is the replacement for char* in .Net ?
Why Is String Returning A Char
Jun 27, 2012I 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
[Code]....
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.
'System.IndexOutOfRangeException' With .Char()?
Jun 28, 2011Private Sub TbxInput_KeyUp(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TbxInput.KeyUp
[Code]...
Basically, what this code is supposed to do is compare the text inputted in the input textbox with the text of the string answerstring. It seems to successfully compare the two, but every time I type the first char into the input textbox the program crashes, givingmythe Out of Range Exception. I assume it means the Char() "array" thats built into vb is out of bounds, however as i've set the while loop so that it only is executed when the whilecount is less than both the length of the input textbox and the answerstring, I don't see how it could be out of bounds.
Asp.net - Remove Last Two String Char?
Aug 24, 2009The 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?
C# - Is Char In Unicode Class
Nov 28, 2011In .Net, given a char, is there a way to tell if that character is part of a specific Unicode category? The categories I'm interested are defined here http:[url]......For example, is there a function that does anything like this?:
bool isCharInClass(Char c, String class)
that could be called like:
SomeClass.isCharInClass("a", "Lo");
Char.ConvertFromUtf32 Not Available In Silverlight
Oct 12, 2010I'm converting a WinForms app to Silverlight (VB.NET). What should I use instead of Char.ConvertFromUtf32 as it's not available to use in Silverlight?
View 1 RepliesConvert ASCII To Char?
Feb 15, 2009I have a string of ASCII in HEX. ( 5A65726f)so first i split them into 2s >>>> 5A 65 72 6f then i change the hex to integer using these integer i convert them to char using chr() it did the job great, i can see the correct word i want..but it give me an error saying " make sure it has the right format" ( error shown below)
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim hexnum As String
Dim converttohex As String
Dim hextonum As Integer
[code]....
i thought it was the for loop problem...since i will go up to 7 while len(hexnum) is 8 so it would loop again but there is nothing after 8th HEX?so i tried For i = 1 To Len(hexnum)-1 Step 2 ...this time...textbox didnt show anything...+ the same error came up...
Convert Char To Binary?
May 1, 2012I want to make a program that can make:
1.) check if a character is in a text file
2.) if the character exist then convert the character into binary code
3.) display the result in a textbox.
Here is my code:
' s is my txt.file
' in this code i want to check if char "g" is the in the txt.file
If InStr(1, s, "g") > 0 Then
[Code].....
Convert Char To Byte?
Jan 25, 2010My application is reading in data from the serial port. The packet format uses 1 byte to tell the data length. The problem is as I am reading each byte in as a char when I try to get the value of the received character (using Asc(cRxd)) it only works up to values of 127, any bytes received that are over 127 are received as 63. I noticed that this was the default parity replace value, but I have parity.none set and I also changed the parity replace value. The received byte is always 63. I have tried reading the data using .ReadByte but this gives the same result - only works on values below 128.
View 1 RepliesConvert Datetime To Char?
Apr 23, 2009I get this result for "select GETDATE()"
2009-04-22 23:09:02.590
What is the best way to convert the datetime to only char like below?
20090422230902590
Convert String To Char?
Jun 5, 2011I 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.
Cut The 1st 3 Char In A String With Vb 2008?
Apr 29, 2009how 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.
Generate A Unique ID Using Char?
Nov 24, 2009I'm creating a program, and as part of it I'm storing a customer ID, which will be automatically generated using some form of combination of the customer's first name and surname? My thought so far has been to declare individual characters as Char and then put them together to automatically generate a customer ID? Problem being
View 7 RepliesHow To Clear Last Char In Textbox
Jun 30, 2009How I can clear last char in textbox in c# when I press key like D0 (mean when I press D0 clear 0 in my textbox)? Or don't let me enter 0? You know I don't want user cant enter number in textbox .
View 4 RepliesHow To Convert String To Char
May 27, 2012I want to convert say Input: textbox1.text=blabla Output: blabla becomes into: textbox2.text=(char45 & char34 char45 & char34 char45 & char64 )
[code]...
How To Handle 'unsigned Char *msg' Par
Sep 17, 2010I am trying to write a VB.NET program that will call a function in an unmanaged C DLL passing the structure like this:[code]What I have not been able to figure out is how to handle the "unsigned char *msg" part. How would you define this in the VB.NET Structure?
View 2 RepliesHow To Use TSQL Char Index
Feb 3, 2009i ised char index of TSQL in vb.net This is my sample script..
strCreditCardName = case when substring(insertedset.EncryptedAccountData, 0, 13) <> 'AccountName=' THEN '' ELSE substring(REPLACE(substring(insertedSet.EncryptedAccountData, charindex('AccountName=', insertedSet.EncryptedAccountData) + 12, charindex('&AccountNumber=', insertedSet.EncryptedAccountData) - 13), '+', ' '), 0, 50) END
How To Work With Usb (send Char To Usb)
Mar 10, 2011i work with applicator(this device send label on product Pallet in warehouse)so i insert my record in database then must send "O1" to this devise for print label how can i do?
View 2 RepliesInteger To Char Conversion?
Mar 31, 2010I want to convert some integer number to char. Basically i am writing these char to serial port to get response from modbus implemented hardware.
TempStr = Convert.ToChar(gSlaveNo) & Convert.ToChar(HOLDING_REGISTER_READ) & Convert.ToChar(writeAddressHigh) & Convert.ToChar(writeAddressLow) & Convert.ToChar(noOfRegistersHigh) & Convert.ToChar(noOfRegistersLow)
[code].....
Move First Char In String To The End?
Apr 28, 2011Im 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
[code]....