I'm collecting in an array the splitted text of a textbox in order to search in a bimensional array for matching in the name, but I got the error "NullReferenceException" at the red line. Now, I looked the code multiple times, but I didn't find the error. Dim info(0 To 0, 0 To 5) 'this is array is already filled by a sub
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check if array consist of only elements from another array
View 3 RepliesI am getting some values in arrayIDs if some particular condtion match i am assinging values to array.Here i am getting problem when this condition not match i am getting values zero in all array indexes,here how to check if array contains zero values in array indexs
Dim
selects As ListView.SelectedIndexCollection
selects =[code].....
Is there any code that will make possible check if the user typed a word i want in order to show him something ? something like , if the user types time , or tim or timing or the word time and transformated to show him up the time ..
View 4 Repliesi'm working on a system that upgrades a basic version to a proversion but i have a payment gateway . it generates a code in an SQL DB.now i have a form in VB that has a textbox and a button how can i let VB connect to my SQL DB receive the code and then check if that code is correct and if its correct download silence the pro file. from an url.
View 7 RepliesI wrote this do while loop it is supposed to search through an array until it finds an account number that matches. but I have a problem I cant check the very first part the array when its subscript is 0 because of where i put increment x but if i move it to the end it won't work how can i fix this?
Public Sub AccountNumberSearch(ByVal a() As Account, ByVal accnum As Integer, ByVal numacc As Integer)
Dim x As Integer = 0
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On a button click I need to test whether or not an array has been filled, if it has the user gets linked to a new form otherwise they receive a message box telling them to first assign values to the array.
I've tried 'If MyArray Is Nothing Then....' and 'If MyArray.Length < 1 Then...' but neither seemed to have worked.
i have an array
Dim ShippingMethod() As String = {"Standard Shipping", "Ground EST"}
Dim Shipping as String = "Ground EST"
How do i do an if statement that will check if the string Shipping is in the ShippingMethod() array
I have a question about working with arrays
I don't have any code written out I just want to know the best way to do this sort of senario to put into a flowchart, the program i'm working on isn't homework, its just practice and the book I have is less than helpful with what i'm working on.
I want to check to see if at least 3 numbers in the array are the same but no less so that it meets a certain requirement how would I check this?
How do I not return duplicate random numbers with Do Until loop?
Dim numbers(5) As Integer
Dim subscript As Integer
Dim searchSubscript As Integer
Dim randomNum As Integer
Dim randomGenerator As New Random
Dim isFound As Boolean
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I tried making a For iterator to check the values of an array, but it checks them 2 times!
View 2 RepliesI'm working on my listview to extract the strings from my php source. I want to check for each array in my listview when i finds the matches of html tags "<span id=""mystrings2"">Enabled", then tick for each checkbox in the listview when the matches are found.
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How would I check if a value is in a string array? Like say there is pages(10) and pages(5) is "rhijaen" I want it to do something like:
If "rhijaen" isin pages() then
dothis
end if
I create an empty boolean array check_state(), and then if a condition is met later in the script, I redim it and save a list of check box states as booleans into the array, and later check the array values, but I can't work out how to do this without causing an error if the array was not defined to begin with
View 1 RepliesIs it possible to find a particular string present in a string array?Example
Dim myString as stringmyString = "abc"
Dim myStringArray() As String = {"rg", "grg", "grg", "dgdg"}
Is there any way to find myString is member of myStringArray, without writing any loop?
I have a series of checkboxes named cbS1 through cbS20 and I set 'Count' as an integer.What I need help doing is taking the value of count and check the checkboxes that are greater than the count.example: count = 7 so checkboxes 8-20 would be checked.Im not sure how to make an array out of the checkboxes to use in a loop.
View 1 RepliesI'm using extension methods based on an array and I would like to know if there is an easy way to check that array got a specify size instead of me doing a copy paste of
if array.count != 1000
throw new exception "size of the array does not match"
in about ~50 extensions
this a small sample of extensions that I use, I got WAY more
<Extension()>
Public Function IsWhite(ByVal board() As bitPiece, ByVal pos As Integer) As Boolean
Return (board(pos) And bitPiece.White) = bitPiece.White
End Function
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I have an array set up to receive the names of forms when they open. The form name is sent as a Form not a String therefore when I run my code I cannot check for whether the field is empty in the normal way (ie. array(1) = "") as the "" are only usable with strings!
Dim Forms(24) As Form
Dim i As Integer
Dim Free As Integer = -1
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I only need a solution to do the same as array(1)="" but for windows forms.
dim reader as new streamreader("txt.txt")
dim placeholder as integer = 0
dim line as string
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this checks my file for any position with latdif < 30, I want this to be on a timer but I want it not to open the text file everytime is this possible?
Lets get down to it, Basically, I'm making a kind of "Anti-Hack" for a project I'm working on.The basis of the "Anti-Hack" is the check processes for names of known Memory Editors, For example, one memory editor I am scanning for is Cheat Engine.exe, I am using this code to scan for it, then I use the result to activate a different piece of code.
If Process.GetProcessesByName("Cheat Engine").Length = 0 The
'It's OK
Else
<Removed for obvious reasons>
End If
Basically, I don't want my code to look like a library of If statements when the only thing I am changing is the process name, what I want to do, is have an encrypted .dat file with an array or list of known tools. I want to then go through the array/list and keep checking for instances of them running.I know nothing of how to encrypt/decrypt .dat files through VB. (I'm not an expert at it atm )I am open to other ways (Easier ways) of doing this, like a Class with a list of names etc.
**NOTE** I would rather it be a separate file as the program features an Auto-Update feature, so it will be easier to update the list.
**IMPORTANT**Also, I would like to know how to hide my process, so it cant simply be ended, It may sound suspicious but people will be able to just close it and start hacking T_T, Unless there is another way, I would appreciate it (Like making it so it cant be ended etc.)**IMPORTANT.
I am working on a check digit program and I am having some trouble finding the best path to take. The program requires 5 digits (numbers). I am calling them
num1
num2
num3
num4
num5
My ultimate goal is to use this equation:
num5 = num1 + (num2 *2) + num3 + (num4*2) - but I use the second digit of the resulting number.
Example: number 12346 - would be "correct!"
12345 - would be "wrong!"
1 + (2*2=4) + 3 + (4*2=8) = 16 so the correct would be 12346 When the user puts in the numbers on the UI I will be returning a comment in a text box on the UI.Which direction should I start?
I am Doing Spell Check for multiple Text box in VB6.0,the Spell Check is working but the Screen is Flickering?
View 1 RepliesI wish to get a quick feeling for how much copy and paste coding we have, there are many tools for C# / Java to check for this type of thing. Are there any such tools that work well with VB.NET? (I have seen what looks like lots of repeated code,
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We are trying to modify a program to control a usb relay device. Essentially what the program originally does is give you a series of check boxes that you check to make the relay fire. We tried to modify the code so that the box is checked after 5 seconds using a counter and an if statement. It works, but only partially, what happens is the check box shows a check, but the even that is normally triggered does not happen.
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I'm making an email sending program and still I don't know how to check if the mail was really sent or not, because sometimes the program will have no error messages but the mail was not actually sent. Is there any other way on how to deal with this except for making use of try catch?Here is my code:
Try
mail.From = New MailAddress(TextBox2.Text)
mail.To.Add(New MailAddress(TextBox1.Text))
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I have (in Excel) code similar to this:And then from there it will call the corresponding module and pass varStar to each module and run the code. The issue I have is that sometimes (like right now) it is a new year, or a new month and varStar may not exist in the specific workbook. How can I code it to, if varStar doesn't exist just skip it and keep going. I tried On Error Resume Next, and On Error GoTo 0. But that wasn't 100% efficient.
View 2 RepliesThe problem seen to appear again in printing job...I have a printer(Epson TM-T88IV Receipt)Before printing, i would like to check if printer is available for printing or not (connect or not). if not, i will show the print preview form. otherwise it will print automatically
View 2 RepliesIm trying to get my code to check that my textbox has 16 digits in it so that it can then validate the number entered. Here is the doe i have so far: [code]
View 3 Repliesi cant really find how to code check and uncheck or if listview 1. selected item = checked then.
View 2 RepliesI'm trying to make it so that if a user checks the listview item checkbox, it does something, but not when the code checks it. This seems really basic.
View 2 Replies