I'm making an application that converts a decimal, octal or hexadecimal value. But I'm trying to validate that that number is in 8 bits, 16 bits or 32 bits.
I need to know which is the max and min value for an integer in 8 bits, 16 bits or 32 bits...
I am new in VB.Net programming...I wanted to generates 10 integers from 0 to 9 randomly and list it in a listbox. How can I do this using VB.Net???
View 2 RepliesI have a problem when debugging a code. On top of class I declare an array, and the length of array is an integer variable which is applied value below declaration of array.
E.g. class declaration
Dim array1 (2, integer) as string
Public Sub
integer = 5
End Sub
So basically, array is created with integer being 0 or whatever, because it is declared before integer was assigned a value. But the problem is, I need it to be declared at class variable so I can use array in different subs.
I am getting error on the following code
Private Sub tot()
Dim temp As TimeSpan = TimeSpan.Parse(wetothrs0.Text)
wtothrs0.Text = temp.ToString
Dim employeeCost As Integer = CInt(temp.TotalHours)
wtotcost0.Text = employeeCost * hrate0.Text
End Sub
wtotcost0.text is a textbox
employeecost is integer
hrate0.text is integer that is coming from database
I wanted to generate random integer and put into array(9). My code is as follow:-
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Randomize()
Dim rand As New Random
[code]....
I wanted the results to be ans = 3412657846 But instead I get ten ans results. So that means the rand.Next generate ten integer to array(0) and so on.I just want one random integer in array(0) and so on....
Using late binding i have set the numericupdown maximum to the column's count of the excel worksheet. Now the Min and Max of NumUpDn is 1 and 16384.
Now i want to change the numeric value to column name i.e
if the user selects 1 then "A" , if 26 then "Z" ,if 27 then "AA"...200=>GR
till 16384 (if excel 2007)
till 256( if excel<2007)
this code below it gives me this error "error: Incorrect integer value: '' for column 'MPotProspect' at row 1"
[code]...
this give me another error "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1/" another way i tried when i highlight the myDatarow.Item(8).tostring and see what is inside there no data found.. but the other from mydatarow 7 to 1 there is data.. but in the database all of the fields including mydatarow(8) has data inside... why in mydatarow(8) when the program run it turn to null... may be the will cause the error...
I need the application version as an integer with decimal points eg: 1.2 At the moment I'm using:
Dim CurrentVersion As Integer
CurrentVersion = My.Application.Info.Version.Major & My.Application.Info.Version.Minor
which just gives me 12.
Ive got a few strings stored inside a string array, and i need to copy each string element into the integer variable on each iteration.how i would convert it? tried
CInt(stringArr(lc))
but got errors?
I have a table with a Real datatype field. I just can't multiply it with other integer fields although the editor doesn't show any error - the result is always '1'.
View 4 RepliesI am having problems with the code below. I have copied and pasted the code from a program that I wrote to test and see if the code does work. In that program it does. But when I use the same code in another program I get the following error message. invalidcast exception was unhandled conversion from string to type integer is not valid.
[Code]....
I want to build a system that will take the input from an electric guitar and capture the frequency of the sound. and when the frequency is captured, the system identify the chord, and create new controls to represent the audio frequency. i want to use the label as the controls. so when the controls is created, how can i know that the user is click on what label. is there something like label1.click in vb 2005 express? then when the label is all created, i want the system to read all the labels integer as the sound of midi. so i have to assign what integer for what sound.
View 2 Repliesive got some simple problem i cant understand how to solve.
str(1) is an array and integer(or double, tried both)
a(1) is an array and integer (or double, tried both)
a(1) = a(1) + 1
Label1.Text = str(1) + a
the big part is where i get: operator '+' is not defined for types 'integer' and '1-dimensional array of integer'.why do i get that message and what does it mean? how do i make the code do what i want?
I faced an error when upgrading VB6 code to VB.NET. The error occurs at AddressOf WindowProc
AddressOf expression cannot be converted to 'Integer' because 'Integer' is not a delegate type
My declaration for SetWindowLong is:
Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA"(
ByVal hWnd As Integer,
ByVal nIndex As Integer,[code]....
What is the reason for the error I get?
I'm trying to create a linked list of an array of integers. Why is the following implicit conversion required?
When I run the code that contains that conversion, I get the following error.
As a real-time data acquisition user control data (a packet of an array of bytes) arrives every second, is converted into an integer array and inserted into a linked list.
The most recently arrived data is painted as coordinates on a grid at the right of a PictureBox using Graphics.DrawLine (pen,X1,Y1,X2,Y2).
The oldest data (arriving 120 seconds ago) will be drawn at the leftmost portion of the Picturebox.
Why a linked list rather than a list? To display 120 views of time sequence data, the draw routine the most recently inserted node to a node that points to Nothing. How do I limit the length of the linked list to 120 nodes and always ensure that the last node points to Nothing?
Do While Not item Is Nothing
item = item.NextItem
Loop
I am a newbie in VB and I got a piece of code which can display the current running program. I need to use that in VB2005 and I got the below error message. Can anyone help how to fix it?[code]
View 18 RepliesI'm trying to convert a VB6 project to .NET, but I get problems with some callback functions, and the following message comes up: "AddressOf' expression cannot be converted to 'integer' because integer is not a delegate type" I've seen several solutions to similar problems like this, but I am not able to understand this issue with delegates.
After the conversion, the code look like this:
Declare Function vsmsgwSetDataPackageCB Lib "vsmsgwW.dll" (ByVal PACKAGE As Integer, ByRef arg As Integer) As Integer
Dim arginitP As Integer
[Code]...
Which gives the error: Method 'Public Function PackageCB(HisNodeID As Integer, ByRef data() As Byte, ByVal length As Integer, ByRef arg As Integer) As Integer' does not have the same signature as delegate 'Delegate Function DelegatePackageCallback(hwnd As Integer, lparam As Integer) As Integer
I have a LINQ2Entity problem, I want to get the value, string, from a database, so I select FProducts.Serial_number, and to end the query, I do .ToDictionary. The problem is, it tells me that it doesn't have sufficient parameters, to convert ToDictionary. So I need something like select FProducts.Serial_number, Nothing). ToDictionary. Also FProducts.Serial_number, 0).ToDictionary doesn't work.
Sub GetStatistics(ByVal ProductNumbers As List(Of String), ByRef Passed As Integer, ByRef FailedProducts As List(Of String))
Passed = 0
FailedProducts = Nothing
[Code]...
this is for a BINGO game final project that I already turned in but this just bugged me that I could not get the sorting figured out. I am trying to get this to sort the random numbers in to columns under the correct letters but I keep getting the error Operator '>=' is not defined for types '1-dimensional array of Integer' and 'Integer' under the line:
[Code]...
I am new to EF Linq and I have been struggling with this query for a few days. From reading this forum, I have managed to get this far:
Dim noPic = (From f In myEntities.FriendLists
Where (f.UserID = Profile.ID)
Select f.FriendID).Except(From g In myEntities.GuestLists
Where g.EventID = _id
Select g.FriendID)
[Code]...
I am trying to get everybody from the FriendList who is not already on the GuestList to display in a Repeater control. After reading the forum I was able to append .First() to noPic at the myNoPic declaration and finally get a result but that only gave me the first element. Does anybody have any advice on how to accomplish this?
Why doesn't CDate(integer) work where integer has format of YYYYMMDD ?and why won't this stupid site let me submit such a short question when I have nothing else to add except some waffle at the end
View 2 RepliesThis is giving me a headache. I have this link query here that grabs an ID
Dim mclassID = From x In db.SchoolClasses Where x.VisitDateID = _visitdateID Select x.ClassID And then later on I have this linq query
ViewData("Staff") = From t In db.Staffs Where t.ClassID = mclassID Select t
I've tried quite a few things but to no avail. I've attempted casting, converting, Is operand, etc.
I am getting this error as I am trying to write on if statement that if I have got the currentcell text on the second column which it called "the cell" then convert the string to the integer type on the label text but the code is incorrect.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If DataGridView1.CurrentCell.Value("the cell").ToString() Then
[code].....
Public Pixels(0 To 95, 0 To 127) As Variant Red = Pixels(X, Y) And &HFF i get this code from VB6, and when i transfer to VB05 i got problem said " Operator 'And' is not defined for type 'Color' and type 'Integer'. " i sent to VS2005
Public Pixels(0 To 95, 0 To 127) As Object
Dim red As Object
Red = Pixels(X, Y) And &HFF
I'm just writing a bit of code to compare an id of integer with an id of integer? for example:
Dim id As Integer = 1
Dim nullId As Integer? = Nothing
Dim areEqual As Boolean
areEqual = nullId = id
When I try to compile the code I get a compiler error: Option Strict On disallows implicit conversions from 'Boolean?' to 'Boolean'. Whilst it's very simple for me to work around this, I was hoping that someone might be able to explain what's going in the compiler to give this warning.
I'm trying to set an Integer value from my.settings.The values comes frpm a listbox, and then inserted to settings (set to specialized.StringCollection)The problem is when i'm trying to get the values and apply them to my function.Error code: Conversion from string "65 & 71" to type 'Integer' is not valid.To me it looks right, but maybe i'm missing something.
Code: Dim test2 As Integer Dim test As System.Windows.Forms.Keysm trigglist As New StringBuilderor Each item As String In
[code].....
i am doing one project in which i declare integer value and asign value to that integer in which
see the following code
[Code]...
I have Tried to convert "1" to integer using Tryparse it showed true but when I used it on "1.00" it is showing it as false, why?
View 1 Repliesi tried this, but had invalidcast at line 2.
vb.net
Dim a As Array = Array.CreateInstance(GetType(Integer), New Integer() {1}, New Integer() {1}) Dim b As Integer() = CType(a, Integer())
what i'm trying to do is to create an Integer array with LBound greater than 0. any way would be accepted, or can i say this: my function that takes i As Integer() as its argument does not have to check the LBound of i because there is no way LBound of i will ever be greater than 0
Can somebody explain the second one to me? I'm not clear on the concept.The first one I know is an array of integers. but what about the second one?
View 2 Replies