Make An Array And Put Result Every Time The Serial Port Gives A New Result?
Oct 14, 2009
I am encountering the following issue So i have a device that sends stuff at the serial port, i then parse it and put it into an array of bytes like that:
Dim HCI_Command_Rcvd_Byte() As Byte All good till here What i wanna do is make an array and put this result every time the serial port gives me a new result, for example:
[Code]...
Basically what i wanna do is let the port parse the messages, fill in the array with the result at an empty spot in this array and then i will have a separate thread that will look in into this array in each non empty space and after it looks into the non empty space it will use or discard the info and also mark this space as empty (after it checked)
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Dec 17, 2008
Anyone else have an issue using read, It appears when I use read it gives me the correct buys but returns the wrong integer value So I use it and it fills the Array i make with &h10, &h6 but read reutnrs number of bytes returned to 1. if there a better way to go with Vb.net with RS232 I mean really my projet dosent have anything out of the Normal
Friend WithEvents CashValidator As System.IO.Ports.SerialPort = New System.IO.Ports.SerialPort("COM1", 9600, IO.Ports.Parity.Even, 8, IO.Ports.StopBits.One)
CashValidator.Read(MyResponce, MyResponceLen, 4)
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Dec 10, 2010
I am currently having a headache on how to solve this problem that i am facing. here is the situation: I have a combobox and a list box on the main form. The combobox will get the data from the ms access database. In the database, i have the details of a person's IC, Name and DOB say for eg on one entry I have D215311523C,SHAWN,13/04/1987 So now, my combobox on form load will show the list of dates in the database to allow the user to search base on the date itself by clicking on the selected date. So when the user clicks on the particular date say 13/04/1987, people in the database whose birthday is 13/04/1987 will be shown on the listbox.Meaning to say if i have 3 entries whose dates are the same 13/04/1987, 3 entries will appear. If there is only two entry, then two results will be shown. But now, when i do a single click on the date, one result will be shown. That is correct. But the problem is when i click on the same date again, three of the same results will be shown on the list box. that is it will display : 13/04/1987 13/04/1987 13/04/1987 which is not the case. Then it will show more duplicates of the same results if i click more times on the same date which should not be the case.
Dim n As Integer
Dim numbers() As Integer
Dim StartFrom As Integer
Dim EndAt As Integer
[code].....
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Sep 25, 2010
I am using a datagrid in my where i am having four columns. In first column the parameter values are entered and in the second column measured value is entered and in third column the nominal value is entered.Inthe fourth column the result is displayed by subtracting the measured value and nominal values. I am doing this calculation in Datagrid cell validated event. What i want is,there will be many rows in the grid,when typing the value in the third column the corresponding result will be displayedin the rowof theresult column,save button will be displayed while the form loads,when the calculate part is completed that is there should not any cell of the resut column empty then i should enable the save butto.
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Apr 16, 2010
I just read about DataSet in VB.NET, it uses disconnected concept. My question is: if my apps has "List All" button that query data from 1 table in the database, and that table has "very very very" many rows, so my DataSet will be filled with those data and eat up memory. Can I limit the data that being put to the DataSet from that query? But I want to be able to retrieve the next data from the same query if the user want to see it?
For example:
I have 1000 rows in my database, and i query all of them. But I just want 200 rows being inserted to my DataSet, but if the user want to see rows number 201 and so on, I want to be able to retrieve the next 200 rows, and so on. So it just like cutting those data into a group of 200 rows. Can I do this with the concept of "disconnected" of the DataSet?
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Sep 18, 2011
See the result just stops at the first one, I want to try and overflow it so then it can do other commands as well. By the way, here is my code. Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim var As String
[code].....
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Mar 12, 2012
I have a 2d array of data that I have performed the sum of the individual column of the 2d array. I want to send the results to a datagridview and also will like to have the result as a 1d or 2d array.
Below is sample of my code
Dim Array1(,) as double
Array1(0, 0) = 5
Array1(0, 1) = 7
[code].....
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Jul 8, 2011
I have a problem with search form. I use date-time picker for user to pickup their prefer date. And when I tried to set any date, it produces no result. Bellow is my code:
Try
myDataSet.Clear()
myCommand = New SqlCommand("SELECT * FROM tblVisitor WHERE EnterDate LIKE @EnterDate",
[code].....
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May 12, 2012
I want to ask about looping
if i have big looping, and i want to print it result real time, how can i do it?(it look like when we scanning with antivirus, then the label that contain location that scanning change real time)[code]...
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Jun 21, 2011
I have set up a method in vb.net and in xcode for encrypting a string using as far as i can tell the same parameters for an AES encryption.I've looked all over the place but cannot find information on whether they use the same encryption algorithm and settings.
this is the vb.net code:
Dim encryptAES As New AesCryptoServiceProvider()
Dim encoding As New UTF8Encoding()
Dim encryptor As ICryptoTransform
encryptAES.Key = encoding.GetBytes("12345678901234567890123456789032")
encryptAES.IV = encoding.GetBytes("1234567890123416")
encryptAES.Mode = CipherMode.CBC
[Code]...
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May 27, 2009
How do I convert the query result into Array so i won't have to use the sqlResults.Item("xxxx") ?
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May 6, 2009
in one textbox i have 10:00 PM and in another textbox i have 12:00 PM....i want to subtract 10:00 PM from 12:00 PM and get result ie 2 hours...how can i perform that?
DateTime.TryParse(TextBox1.Text, d1)
DateTime.TryParse(TextBox2.Text, d2)
the code is to convert the text into time.
[code].....
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Jan 5, 2010
I am trying to search an array and then say whether the result was found or not.
So far i have:
Option Explicit On
Module Module1
Const MaxAnimals = 20
[Code]....
Now i have looked online and all of them seem to give you like ready made things on VB but i have not used them yet and i know there is an easy way of doing it as my friend managed to do it before but i can't get hold of him.
Basically it is a program (There is more of it but this is not necessary for this) which puts the names of animals into an array then you can either add another animal, or in the sub i am doing at the moment view all the animals in the array but i can't work out how!
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Apr 28, 2011
Background: I wrote code that will output all the currently logged in User's Active Directory group names. I want the group name (ex: Acomp_user_BIG) via IdentityReference.Translate instead of the current user's SID's (ex: S-1-5-32-544) returned via IdentityReference.Value.
Here is code that I used:
Public ReadOnly Property Groups As IdentityReferenceCollection
Get
Dim irc As IdentityReferenceCollection
[Code].....
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Jul 14, 2010
I'm a police officer and trying to write a program which will print the officers name, start and end dates and select a random road from an array that he/she will be responsible for during the time period. Right now I only have 6 entered to try and get the hang of this. It has a drop down list of persons names, a start date picker and an end date picker. The program will then display the name, start and end date and select a random road from the array. [code]...
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Jun 22, 2010
Public Class Form1[code]...
I would like the "Percent" result to come out as 37.50%
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May 6, 2012
I have created a COM Object via VB .NET and exposed some functions that I wish to call in Excel using VBA. I am currently trying to pass an array of objects as a result to VBA but Excel is complaining the following:
'Function or interface marked as restricted, or the function uses an automation type not supported in Visual Basic.'
I have looked around on the internet and have seen similar issues but not to one I am trying to do.My VB .NET function, which I wish to call in Excel is declared as follows:
Public Function CallArray(ByVal serviceName As String, _
ByVal effectiveDate As String,
ByVal serviceParams() As System.Object,
ByRef ArrayRes() As System.Object) As System.Boolean
VBA is complaining about the System.Objects my question is how the heck are you supposed to pass and return arrays from .NET to VBA. Also the data that will be in the ArrayRes() is mixed type, its not just strings etc, its an array of arrays that can contain strings, integers doubles etc.I chose VB .NET because I assumed it would be possible to map to VBA easier.if System. Object and Arrays in VB .NET is not the way, ie maybe theres another way via collections or lists, then Im open to that. I just need to get this data into VBA.Also I could move over to C# if needs be.
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May 25, 2011
I am interested in developing a multi-language program that will have a main .NET GUI but will perform calculations by calling procedures from a Fortran95 dynamic link library file. Right now I am just playing around with a very simple project in order to get the interoperability between the .NET framework and a Fortran95 (*.dll) file working correctly. So far, I've been able to pass the Fortran95 (*.dll) file an array from VB, sum all the elements of the array using an intrinsic Fortran function, and pass the scalar result back to the .NET framework with no problem. However, if I try passing Fortran the exact same array, construct the transpose of that array using another intrinsic Fortran function, and try passing the transposed array back to the .NET framework I keep throwing an exception. I am not a programming wiz, but it appears that when Fortran stores an array in memory, the .NET framework doesn't know how to read that. I am looking for some guidance on how to pass an array from the Fortran95 (*.dll) file back to the .NET framework.
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Mar 31, 2009
The Quiz is timed. Its result is in "m:s" format. How to make this result permanent, i.e. when the game is restarted the results would still be there?[cod]e...
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Apr 2, 2009
Make a Quiz result sortable? Option Strict On[code]...
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Jun 11, 2012
I'm attempting to make a generic query executer function. I want to be able to send it a query string and have it return a two-dimensional array containing the results. Below is my code for how to do it with a (9,x) array. How can I do it with an (y,x) sized array? Also, I feel like there must be a more efficient way to do this..
[Code]...
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Feb 18, 2011
if you want to make program to calculate the result of brackets math question , as 6+(9+(5-(1+(2+1)))) , and you made 2 buttons representing ")" and "(" , and you want when the user clicks on the "(" button it just applies that the number before it to be stored in a place like a label such that the program calculates numbers after it and then calculate the produced number and the label number , something will disallow you that the questions with many brackets as the mentioned one above 6+(9+(5-(1+(2+1)))) will for example store 6 and plus sign in a label but after that 6 will be placed by 9 because there is another bracket after 9 , so the question will be calculated false , more clarification for my question is the way brackets are made in the windows calculator so i want a coding idea to make the brackets like in the windows calculator
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Dec 26, 2011
Currently I'm doing a resistance calculator. If i got 3 combo boxes which let user to choose the color code of a resistor, how to make the resistance of the resistor(resistance after count according to the color code choose by the user) go into a listbox after click "Enter" button? And also initialise the color code choose by user just now and the resistance after count.
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Jul 23, 2009
i'm designing this window application wherby it has to get the data from serial port and new data will be display at the textbox.my textbox namely textbox1, textbox2.. till 20.so when 1st data comes in, it will be place to textbox1 then when 2nd data comes in, it will be place at textbox2 and so on.
Now. Should i place the data as array and do textbox array or is there a way to put the data as the for loop runs?i've tried using for loop and textbox + 1 but its not working.
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Nov 15, 2011
I'm creating a small program to read from an SQL server, loading result into an array, pivoting the array to my liking and mailing it out to selected members of a group. It's going to be run once a day with Windows schedule. I have the connection, query and mail sorted, but not the datareader to array bit.
(line 26)?
Imports System.Data
Imports System.Data.SqlClient
Imports System.Net.Mail
[CODE]...
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Aug 13, 2010
I'm trying to lern VS 2010 from VB 6 and one of the things i'm hawing a problem whid is control array.In vb 6 if you create a text box it's named "Text1" and if you yust copy it and paste it it renames to "Text1(0)" and the new one's name is "Text1(0)" and the code would lock like this
[code]...
then it would print for each loop the random result in one of the text boxes corresponding to i.
How do i do this in VS 2010?
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Oct 4, 2010
I've got a 9pin serial port plug and I'm wanting to use a button to play music, seems easy enough except from a hardware point of view, say my standard button has a output wire how do I connect that to my serial port? this video says PIN 1 and 4, but why?
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Aug 16, 2011
i am a absolute beginner and i want to use vb to receive data from micro controller through serial port using rs232 standards, i found this code to receive the data serially, can any one tell me where should i paste this code, so that the data received will be displayed in message box.Private Sub DataReceived(ByVal sender As System.Object, ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) HandlesSerialPort1.DataReceived
[Code]...
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Oct 26, 2011
The link below has code to connect to a modem thru the serial port but it is for an earlier version of VB. when I convert the code, it does not fully convert and has 4 errors that prevent building the project. can someone tell me what needs to be changed or added?
[URL]
Note: the error: not CLS-Compliant
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Mar 26, 2009
I've been struggling with writing my own Ethernet to serial program and just about to give up since I'm down to the wire on this project. I keep getting intermittent errors and I just can't get around them.
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