I'm trying to pass a char array or string to a C++ dll so it can fill in the contents and pass it backThe C function is declared as:
WORD yasdiGetDriverName(DWORD DriverID,
char * DestBuffer,
DWORD MaxBufferSize);
[code].....
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?????)
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?
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.
How to add the Alphabet as Char elements in a one dimensional array, using a For-loop. The length of the array depends on user input, but is generally between 5 and 15, so the how many Char of the alphabet only need to add as many as that.
This is how I have it at the moment :
Public arrayLengthIs As Integer
Public arrayOfColumnsLetter() As Char
arrayOfColumnsLetter = New Char(numberOfColumns) {}
Public Sub addCharToArray()
[Code] ......
convert char to ascii in array form?.asci[a]but a is char array.i need a syntax for it.
Admin Note: all the communication on the forums.
My program gets an encrpyted query string ,decrypts it and then pulls the pdfs in a popup window depending on the values in the string. The issue I am having is I have around 500 ids that I am passing whose pdfs need to be generated, but I keep getting the "Invalid length for a Base-64 char array".
Not sure what I need to do, I have read through the solutions and have done whatever has been said, with replacing the blank with the "+" but I cannot get this to work.
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
_CurrentProcName = "Page_Load"
[Code].....
Remove empty elements from char arrayI have this [code]...
View 6 RepliesI 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?
I need to strip every other char from an array or string. Whichever is easier.
View 4 RepliesI 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]...
I'm having problems with marshaling in VB.NET to C++, here's the code :
In the C++ DLL :
struct APP_PARAM
{
[code].....
I am creating a dll with all the functions and subroutines that I use all the time and I decided to create a function that I can pass different types of array to so the function obviously (or not) would have an array of type object. Now I no you can pass any type into an object type but when I pass an integer array into an object array I get an error.
value of type '1-dimensional array of integer' cannot be converted to '1-dimensional array of object' because 'integer' is not a reference type.
Shared Function CompareArray(ByVal FirstArray() As Object, ByVal SecondArray() As Object, Optional ByRef ErrorMessage As String = "") As Boolean
Dim IntArrayOne() As Integer = {1,2,3,4,5} Dim IntArrayTwo() As Integer = {1,2,3,5,6} Dim IsSame As Boolean = False IsSame = CompareArray(IntArrayOne(), IntArrayTwo())
I previously posted a Question about code that uses a function to return the frequency of characters in an array. I have now got this code.
View 5 RepliesCan 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.
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.
View 10 RepliesI 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 RepliesArgument matching parameter 'separator' narrows from 'String' to Ƈ-dimensional array of Char'. ERROR
View 7 RepliesPublic Shared Function UrlTokenDecode(ByVal input As String) As Byte()
If (input Is Nothing) Then
Throw New ArgumentNullException("input")[code].....
i 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 RepliesI am trying to pass a 2D array into a dll I wrote in C. When I run the program, it crashes at the first line (in the dll) that I try to read the array. It gives an error that it is trying to read protected memory. I'm guessing this means the array was not correctly passed to the dll, so the program is trying to read a memory location that doesn't exist. Is the problem somewhere in my VB code? If not, it must be in my C code, right?
Here is my VB code:
Declaration of the function in the dll:
Code:
Private Declare Function image_processing Lib "image_processingDLL.dll" _
(ByRef image_array As Long, ByVal dpi As Long, _
ByVal xDim As Long, ByVal yDim As Long) As result
Calling the function:
Code:
Call image_processing(hImgArray(0, 0), hImage.HorizontalResolution, _
hFilmPictureBox.Width, hFilmPictureBox.Height)
I am using Visual Basic .NET 2005 and I need to call a DLL made in VB6. Couple of days ago i wrote a test dll in VB6 and called it from VB.NET. I passed an array and another variable. And the dll got it and displayed the values in the array. (I didnt save that code)Now when I am writing it again I am getting an error "Specified array was not of the expected type." [code]If I do not pass array then it accepts but otherwise it does not. The array here is CD().
View 2 RepliesI have an old program written in VB6. I upgraded the program with VB 2008. The updated program works fine except when the program tries to transfer an array to another subroutine. The old VB6 program sends arr(0) as an argument to the subroutine, the address of arr(0) is passed to the subroutine. The array arr() address is the first of a block of consequent addresses one by one, arr(1), arr(2), etc.
Now when running VBnet, the address of arr(0) is not the first of all consequent arr(1), arr(2), etc. It is an isolated number, just like if arr(0) were a variable instead of an array. The addresses of arr(1), arr(2), etc do not exist in the subroutine. [Code]
The variable of y1 passes to the subroutine oK, whilst arr(0) passes also like y1 into an isolated address. So VBnet interprets arr(0) like a variable rather than the first value of a long list. I haven't been able to find out why the above sample does not work. I got stuck in my programming effort, as I cannot proceed to to further development. how the code should be modified to enable the whole array information passing through the subroutine.
I m a student and new to VBI m triyng to pass an array as parrametersAnd the compiler says I havent declared the array my coding is as below
[XCODE]Sub Main() 'Fill array Dim MyArray(0 To 9) AsString For lLoop AsInteger = 1 To UBound(MyArray)
Console.Write("Enter First Name " & lLoop & ": ")
[code].....
When I try to do the same in .net the "array argument" value of the second sub is either Nothing or I get an error saying "Value of type 'String' cannot be converted to'System.Array'."I've tried converting the array to a system.array but it will not hold all the Types of data it needs to hold. (I tried 3 days ago and don't remember what Types would cause an error. My 1st value is a string and the second is an integer and this caused some error.)
View 1 RepliesEdit by Moderator: Re:i have a question : how to pass array between vb & vc in dot net 2008.The description @ rio 1 does not work with me.It always complain abou
View 1 RepliesI have a question regarding calling a C++ dll from vb.net.My C++ dll has a function that takes char **data (2D char array) as a parameter like this for example.
extern "C" int fn(char **y_data)
I'm wondering if this sort of thing is possible in VB.NET.. say I have a routine which accepts an integer array, defined as:
Sub WriteTable(iRows As Integer, arrColumns As Integer())
The arrColumns parameter is an integer array of column widths.
I can pass a value by doing this:
[code]....
I'm having trouble passing an array of a user defined type to an procedure in a COM DLL. The prototype for the procedure i'm using is this:
HRESULT STDMETHODCALLTYPE GetData(
/* [in] */ DWORD dwCount,
/* [size_is][out][in] */ CSimData *puData) = 0;
CSimData is a structure which is also defined in the interface.
I'm trying to call it with the following code but am getting an exception:
Dim temp(1) As MACHPLANTSIM18Lib.CSimData
temp(0) = New MACHPLANTSIM18Lib.CSimData
temp(1) = New MACHPLANTSIM18Lib.CSimData
[code]....
The exception i'm getting is "COMException was unhandled - Exception from HRESULT: 0xC0000005" It looks to me that the array isn't passing properly to the COM function. I'm able to send a single object, but when I do an array of objects I get this exception.
I have populated an array.
Button1 click event
Dim array1 (3,3) as string
array1 (3,3) = "BLA"
End Event
Now, in the same class, I have another button.
When I click on this button2, i want to use this array to stream files to textfile.
The problem is that I cannot pass data from button1 click event to button2, as I have to declare the array again, and that causes array to lose data on button2 click.
If I however, declare array on top of class, I get a funny error sying out of index range etc.