Is there any difference between these two ways of declaring a Integer and setting the value to zero? vb.net Dim x As Integer = 0' or...Dim x As New Integerx = 0 Is one way better than the other in any situation?
View 15 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'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].....
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 Repliesi am doing one project in which i declare integer value and asign value to that integer in which
see the following code
[Code]...
i 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
I'm connecting a form to a database which contains mostly text fields. I've been using GetStringValue to pull the data into the form. One of the fields is an Integer and obviously GetStringValue won't work in this instance.
View 6 RepliesThis is a part of my code of a VB GUI
[Code]...
how do write the value of the integer TotalPrice to lblPrice ?
I am trying to write two integers into an SQL Server 2008 database.
QuizID and Answer have their data type in SQL set as 'int' and Question is 'varchar'. ReadQuizID and FinalAnswer are integers. When I run this code to write to the server I get an error saying "Conversion from string "Insert Into Questions(QuizId,Que" to
type 'Double' is not valid.".
myCommandWrite.CommandText = "Insert Into Questions(QuizID,Question,Answer) Values('" + ReadQuizID + "','" + FinalQuestionString + "','" + FinalAnswer + "')"
If I replace the string with:
[Code]...
just having a bad time about this stuff.i need to multiply both textbox1 and 2 to textbox 11. is it possible?
attach is the code and the program looks like
I am making a simple timer but I seem to be having some troubles formatting the time. What I have done is split up the hours, minutes, and seconds into integers. The problem is, I do not want my minutes and seconds to be 1:1 for 1 minute and 1 second. Instead I would like it to be formatted mm:ss.What command is used to format and integer to add a preceding 0 or not?
View 4 Repliesi have a listbox that loads a text file containing numerous strings for example:
42Sheep (theres a tab inbetween the number and the text)
i want to just return the number at the beggining i was going to use substrings but the list goes in to 4 digit numbers
I have 2 Labels that contains only numbers in the string, I want to get the Integer value of both and add them together. I've been playing around with it and getting nowhere.
View 7 RepliesI am still learning to use the Reader in .net for getting results from a stored procedure. From examples on here I see how to get a string value from the reader such as:
reader("LastName").ToString()
But how can I read in both an Integer and a Currency type and assign it to that type of variable?
I am creating a program that will allow me to type any Hexadecmial character into a textbox and it will convert it into an integer.
I can convert from integer to hexadecimal just not the other way around
i have a question... If i have a ListView and i have a subitem with the text 140.00, what can i do to make that string an integer?
View 25 Repliescoding a shipping application where it adds .75 for every 100.00 dollars it would look something like this
0.00 to 100.00 = .75
100.01 to 200.00 = 1.50
200.01 to 300.00 = 2.25
300.01 to 400.00 = 3.00
and so on where the equaled value goes up .75 everytime i think i could use integer division and/or modulus
It's good to be back in this forum again hoping someone could help me solve my problem again xD My goal is to import .txt to db.
This is my code
[code]...
Some of the records are inserted but when the code read the part where there is an empty/null value in the column where they are assigned as "decimal" the error message "Error converting data type nvarchar to numeric." pops out.
I am trying to reset all integer values to "0" with a reset button.I try not to use hardcoding by simply set them one by one. So my idea was checking all the variable's type and set them all to "0".
I tried to use this methode, from someone in this forum (sorry, I forgot the name but this is very helpful...) For Each ctrl As Control In Me.GroupBox4.Controls 'Check and see if this control is a TextBox
If Object.ReferenceEquals(ctrl.GetType(), GetType(Label)) Then 'Check and make sure this s the "TextBoxToExclude"
'CType(ctrl, CheckBox).Checked = False
CType(ctrl, Label).BackColor = InactiveColor
End If
Next
But when I tried to find the code, I couldn't get it.So, if anyone knows how to do this,
In class the teacher mentioned that textboxes return string. If I am asking you to tell me how many hours did you work, and if you say 2.5 I would like to have the integer 3 stored, because I have to pay you for any fraction of an hour as a whole hour.
I remember seeing someplace that it would be changed into a double and then take the ceiling of that double and then change it into an integer.
Something like intHouresWorked = cint(celing(cdouble(textbox.text)))
will that work, or am I missing something?