Properly Use Arrays As A Function Parameter?
Nov 9, 2011
I'm currently working on a school project and I have stumbled upon various problems. I'm supposed to write a software tool based on a mathematical model.
In total, the model has 12 parameters and 2 constants used in it, so I figured it would be a good idea to store the parameters in 2 separate arrays - one containing 6 parameters which have to be entered by the user and another one with another 6 parameters which should only be changed in a settings kind of window for tweaking (they are set to default values provided by the model).[code]...
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Mar 9, 2011
I want to have a "template" function that can receive different parameter and a type parameter, like:[code]But Vb told me that tupeList is not defined... is there a way I can do that?
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Dec 13, 2011
I need to execute a stored function in oracle or sql through vb.net. I created a command object. Depending on the database type(oracle or SQL) i am preparing the Command text as Select functionName(?,?,?,?,?,?,?,?) from dual; (For Oracle) Adding the parameter values of the function. Now performing the ExecuteScalar which is not working saying invalid parameter. This works with ODBC connection string. But ODBC doesn't with 64bit. My Requirement: Code should execute a user defined stored procedure by taking the values at runtime.
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May 28, 2012
I want to make a GetAllContacts method which takes a sort parameter of type Func(Of Contact, TKey) which is the same type that the OrderBy method for an IEnumerable(Of Contact) takes.[code]"Too many arguments to extension method 'Public Function ElementAtOrDefault(index As Integer) As Contact' defined in 'System.Linq.Enumerable'." on the second parameter.
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Jun 14, 2011
I'm using fileopen() function to open the file, after doing all the works I'm using fileclose() to close the file. But when I access the file again it returns already the file is opened by another process.
Sample:
Dim intFile As Integer = FreeFile()
FileOpen(intFile, mstrFilename, OpenMode.Binary, OpenAccess.Read, OpenShare.LockWrite)
FileClose(intFile)
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Feb 11, 2010
have an xml file like this.
<?xml version ="1.0" encoding ="utf-8"?>
<menu>
<menuNode title="Register" value="true">
[Code]....
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Sep 23, 2010
I'm trying to make sure that I don't leave any loose ends open in my application and am concerned about a few but might get my answer from this one. I've "overriden" some functions so that way I can try and keep all the resources as clean and free as possible. So in this instance, I have a function called ExecuteReader which returns a DbDataReader as normal, but all I had to pass to it was a SQL string rather than recreating a DbCommand every time. I want to make sure that even though I'm unable to call dbCommand.Dispose() that it is actually doing so.
[code...]
In here, I set the _dbReader to what I'd get from the function and eventually I close the _dbReader. I do not close the connection as I don't open it each time I make a query. This is a SQLite database that only one user will be using at a time (small application with very very very little likeliness it will grow) so I didn't think it necessary to close and open the connection all the time. Maybe I'm wrong, not sure. Using it this way though, it is potentially ok for cleaning resources?
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Nov 21, 2010
I'm having trouble getting an Applications.DoEvents event to function properly. VB keeps telling me I dont have a valid argument. Can anyone look at this and explain how I would complete the expressiojn for Application.DoEvents.
[Code]...
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Feb 15, 2012
i'm working on a project that is trying to calculate the discount on three different kind of packages, each worth different prices.
what we are given is
package A= $99
package B= $199
[code].....
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May 13, 2011
Does anybody know the code to refresh and reload desktop icons, you know how after installations of programs it sometimes refreshes the desktop? That is exactly what I need and what I am looking for. Someone please help me out here because I tried searching on google and could not find any proper code.
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Jul 23, 2010
I have 2 arrays that are generated through a function as follows:
Dim alstCoordinatorID As ArrayList = g_alStripAllOneType(txtCoordinator.Text, "<CoordinatorID>", "</CoordinatorID>")
For iCount = 0 To alstCoordinatorID.Count - 1
[Code]....
So basically theres a list box of co-ordinator IDs and a list box of the positions they are in. On another form there is a combo box with the list of ID's that is transferred from the list box on the processing form. I want to display the Position of the Co-ordinator when their ID is selected. How do I match the positions up so when an ID is selected in the combo box their position will appear?
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Feb 27, 2012
How can i send arrays to a function?
example i have an array with 400 elements containing random numbers how can i send those to a function, say to add 1 to each them?
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May 18, 2009
I have an array of integers and I want to pass the array to a function that will add up the elements of the array and return the cumulative total of the elements of the array. So, if the array contains the values {1,2,3,4,5} the return value from the function would be 15.
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Jun 17, 2011
I am getting records in my dataTable that have nullvalues and need to pass each of those through a function that gets the missing value. In this case my records are address's that are missing the "Latitude" and or "Longitude" Field
I need to be able to retrieve the values and place them in the missing column and row
Nulladdress
Public Function GetNullAddress() As Address()
Dim Addresss = (From row In dtsold.AsEnumerable() _
Where row.IsNull("Latitude") OrElse row.IsNull("Longitude") _
[Code]...
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Aug 21, 2009
I had a question regarding the split function used in Visual Basic. As of now I have written a function that brings in a string value. The string value returned will probably look like this "List1;List2; Field1,Field2". My goal is to use the split function for this string to put all the lists in one array and to put the fields in another array.
The problem is between where List2 and Field1 are. I don't want Field1 to be placed in the list array. I'm thinking there might be a way to do this by parsing but I'm not sure. Here is my current code below.
Dim s As String = GetSetting("ReOrderList", properties.SiteId)
Dim affectedLists() As String = s.Split(";")
Dim affectedFields() As String = s.Split(",")
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Mar 13, 2009
I want to go to a class.vb file that has a function from an aspx page and I want to return mutiple arrays. Is that possible? If so, how would I call it from the aspx page and how would I return it?
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Dec 6, 2010
I am working on a project and I need to read information from a streamreader and put into an array and then use the split function to split the the lines read by the commas.
Example: Texas, USA, 123
And I need to split the three into separate arrays and then swap Texas and USA to make it USA, Texas, 123. I am using VB.net language and line.split(",") is not working.
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Jun 8, 2011
I have some ActiveX that was written for VB6. They all seem to return Variant types. Ex.
[Code]....
In this case the GetPosition control is returning a robot axis position. It looks to me like the values coming back from the function is not getting converted to object type properly.
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Apr 28, 2012
I would like to multiply two single dimenssion arrays, having 5 elelments in each.
I prefer to use the SumProduct WorkSheet function.
I wrote this kind of line (below) but got a run time error #1004.
X = Application.WorksheetFunction.SumProduct(Array_1, Array_2)
I would like X to be the sum of the elelment multiplication of the two arrays/
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Nov 11, 2010
I have several parameters consisting of separate System.Byte() arrays. What I need is the syntax for a function declaration where the parameter is an array of arrays - I do not want to delve into System.Collections, and it's my preference not to CType each array into an Object and then back into a Byte().
Problem I'm having here is that:
Public Function MyFunc(arrayparam() As System.Byte) As System.Byte()
accepts a single-dimensional Array of individual Bytes.
Then Public Function MyFunc(arrayparam() As System.Byte()) As System.Byte()
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Dec 14, 2009
The following two statements seem the same to me but the first throws a design time error, and the second does not. The first one is passing the first parameter in hex and the second passes the first parameter as its decimal equivalent.
Public Shared ReadOnly Test As New Guid(&HCC58E280, &H8AA1, &H11D1, &HB3, &HF1, &H0, &HAA, &H0, &H37, &H61, &HC5)
Public Shared ReadOnly Test2 As New Guid(3428377216, &H8AA1, &H11D1, &HB3, &HF1, &H0, &HAA, &H0, &H37, &H61, &HC5)
Here is the error associated with the first statement:
Error 1 Overload resolution failed because no accessible 'New' can be called with these arguments: 'Public Sub New(a As Integer, b As Short, c As Short, d As Byte, e As Byte, f As Byte, g As Byte, h As Byte, i As Byte, j As Byte, k As Byte)': Constant expression not representable in type 'Short'. 'Public Sub New(a As UInteger, b As UShort, c As UShort, d As Byte, e As Byte, f As Byte, g As Byte, h As Byte, i As Byte, j As Byte, k As Byte)': Constant expression not representable in type 'UInteger'.
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Dec 9, 2009
I have a statement:
dat.XoaNhanVien(Me.dtgcapnhatthongtin.CurrentRow.Cells(1).Value, message)
That is a function for deleting info. Now I want to create other function and get above function to parameter. I mean:
Public Function func(Byval func as " What type can be ?")
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Dec 9, 2010
its just like that in other langauges (php in the example)
function myFunction($message,$sender="nodoby") {
return $message." by ".$sender;
}
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Nov 9, 2009
[code]...
Expected Results: A scalar result of the comparison between Array1 and Array2 such that when Array1>Array2 it is true. See expected array above.
Actual Results: When Result(x) is true, all elements become Array1(x) and Array2(x) .What is wrong with the function?
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Feb 6, 2012
I have a Sub with an array of strings as parameter:
Private Sub des(ByVal array() As String)
Dim i As Integer
For i = 0 To UBound(array)
[code]....
When I call the function inside my main function , the value of str changes even if the array is passed to the function Byval
Dim str() As String
str = {"11111", "22222", "33333", "44444", "5555", "66666"}
des(str)
I tried making a copy of the array in the Sub, but it still changes in the main function
Private Sub des(ByVal array() As String)
Dim i As Integer
Dim array2() As String
[code]....
I read on a site that you cannot pass arrays ByVal ,is this true? If so , how should I proceed?
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Mar 14, 2012
How can i create a optional parameter in C# as we create in VB.Net
Public Sub Demo(ByVal a As Integer,Optional ByVal b as integer=3)
End Sub
I want to declare this in C#
[code].....
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Mar 3, 2011
I am using visual basic and trying to create function. I am getting this error:
"Argument not specified for parameter '_IsDayRateCheckBox' of private function CalculateParikingCharges(_HoursDecimal As Decimal, _IsDayRateCheckBox As System.Windows.Forms.CheckBox) As Decimal'.
This is the code.
Private Function CalculateParkingCharges(ByVal _HoursDecimal As Decimal, ByVal _IsDayRateCheckBox As CheckBox) As Decimal
This is how I call the function.
Dim HoursDecimal As Decimal
Dim AmountOwedDecimal As Decimal
If Not Decimal.TryParse(HoursTextBox.Text, HoursDecimal) OrElse HoursDecimal < 0D Then
ErrorLabel.Visible = True
HoursTextBox.Focus()
[Code] .....
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Feb 3, 2012
I have had some trouble on what to put inside the parameter named CallFWT as without it i would get a value of 0[code]...
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Dec 29, 2008
I wrote vba function in excel and I want to call this function in vb.net with parameter passing.
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Mar 10, 2011
Is it possible in VB to have a function that can receive diffrent parameter, like a String or a Integer or a custom class type?
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