Returning A Function Value With Pointer Or Struct?
Jun 11, 2011i being ordered to change my function skill to returning value by using struct but not using pointer. may i know what is the pro and con between this 2?
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Populating Arraylist - Function That Returns A Struct
Oct 29, 2009I have a Function that returns a struct in VB.NET:
CODE:
Where as in my struct I have two variables:
CODE:
When I try to populate the structure as shown above, I get an a nullvalue exception.
Returning A Function Vs. Returning Variable Name?
Dec 12, 2011My brain may just be fried since it's the end of the semester, but my teacher kicked this back to fix and resubmit...she said that I am "returning the name of your function rather than your variable name".
Here is my code for all 3 forms.
code:
These are forms to calculate the cost of getting a cell phone package.
How To Get The Function Pointer From Class
Nov 5, 2011Public Class Form1 Public Declare Function GetModuleHandle Lib "kernel32" Alias "GetModuleHandleA" (ByVal lpModuleName As String) As IntPtr Public Declare Function GetProcAddress Lib "kernel32" Alias "GetProcAddress" (ByVal hModule As IntPtr, ByVal lpProcName As String) As IntPtr
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim hmod As IntPtr = GetModuleHandle(Nothing) 'Work Dim addrs As IntPtr = GetProcAddress(hmod , "TestFunction") 'Not work, always NULL why??
How To Access A DLL Function Having A Void Pointer Argument
Jan 4, 2012I need to access a DLL function which has a void pointer argument (probably written in C/C++). In VB6 it could be accessed by declaring the argument as 'Any'. VB2008/VB2010 does not know this variable type 'Any'.
I tried instead: Object, IntPtr, UIntPtr, Int32(), Long e.t.c. but there always occurs a compile error or a runtime error.I did a lot of Internet investigation but could not find any answer.
Is there a solution to this?
Returning A Function Value
Dec 14, 2009returning a function value? I have a simple function that returns an integer. This function works fine when executed in SQL Developer but, when called from my apps, it always returns 2 regardless of anything. I have checked it over and over again, I cant seems to find where I am going wrong.
[Code]...
Returning No Value From A Function?
Apr 20, 2009what changes I need to make to the code so that when no value for intPosition is found the textbox txtRoomNumber remains blank? At the moment a value is being entered into the textbox when no value for intPosition is found.
Code:
Private Sub btnFindRoom_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnFindRoom.Click
Dim strRoomType As String
Dim intRoomNumber As Integer
[code].....
.net - Function Returning Different Datatype?
Feb 15, 2011Just come across the following snippet:
Public Function Checked() As Boolean
Return applyChange 'this is a string!
End Function
Whats going on here? How can a function with return type Boolean actually return a string? I'm assuming theres some implicit conversion going on here, which I'd rather not have.
.net - Recursive Function Not Returning?
Nov 28, 2011I am hopeing someone can help me here with a recursive function I have that is not returning either true or false as I would have espected it to. The function loops through a Active Directory group for its members and then calls itself if it encounters any groups within the membership in order to gets its members as well. I am trying to return either true or false based on if any errors were encountered but not haveing any luck at all. It appears to just hang and never return back to the primary calling sub that starts the recursive function. Below is my code I am using:
[Code]...
Asp.net - Returning Object From A Function?
Feb 8, 2012If an object is created inside a function and the function returns that type of oject how is the memory handled.
Example:
Public Function GetEmployee(employeeid as integer) as employee
Dim oEmployee as new employee
oEmployee.FirstName="Bob"
[code]....
Does the variable that receive the object still a pointer to the memory location that was used inside the function?What about when you do a oEmployee2=oEmployee.Is oEmployee2 just a pointer? And any changes to oEmployee will now affect the other. Just trying to understand it from a memory perspective and how that scope works?
Function Returning Different Datatype?
Dec 22, 2011Function returning different datatype
View 4 RepliesReturning 2 Items From Function
Oct 26, 2011I have stored procedure which I will execute its result and pass it into a Dataset and return it but at the same time I have a Output parameter in my stored procedure which I also want to return, how can I return both the dataset and the integer output value with my function, or is there a more 'appropriate way' to handle such situation?[code]
View 5 RepliesReturning An Array From A Function
Apr 14, 2009I need to return an array but the array size will change from one call of the function to another so I need away to storing the returned array. The function is as below, and as you can see the returned array will be of different sizes:
[Code]...
Returning Array From Function
Jan 15, 2010Im overiding getRolesForUser() I have 2 columns i return from the query IAdapter.GetRolesByUserName(userName) returns two columns (roleID, formID) How can I return them and access the two columns data? 2 dimensional array?
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Returning One Or More Values From A Function?
Apr 20, 2010Is it possible to return more than one value from a function? Like two integers, or an integer and a boolean, or any other data type combination. I understand I could use a sub and set these values in a variable but I was wondering if I could avoid declaring more variables by using a function.
View 28 RepliesVB Function Returning Null?
Apr 3, 2009is it possible for a VB.net function with a return type of integer to return null ?
View 3 RepliesVS 2005 Returning Value Function?
Oct 3, 2009Function test(ByVal res As Integer) As Integer
res = 2
Return res
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VS 2008 Returning Value From Function?
Aug 23, 2010I'm attempting to create a function that will get the User Accounts from the registry. I then need to loop through those users and commit specific actions on each one.Here's my function:
VB .NET
ublic Function UserAccounts() As String
Dim userskey As RegistryKey = Registry.LocalMachine.OpenSubKey("SOFTWAREMicrosoftWindows
[code].....
Always Override Function With Different Returning Type?
Nov 8, 2011I've got this MustInherit class called ViewerElement, from which derive classes like ViewerLine, ViewerImage, etc.Then, in the main program I have a collection of different elements (Images, Lines, etc.). What I want to do is something like the following:
[Code]...
I'm getting desperate to implement this Clone method without getting errors. How should this be de done?
Function Is Not Returning Correct Values
Jun 18, 2009Ok simply my code doesnt want to output the correct number. I'm working on the project euler probems to expand my knowledge in VB.net and the current question I am working on is asking to work with triangle numbers. while researching I found that a triangle number can be calculated by using the formula:
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Module Returning Data Like A Function?
Jul 12, 2010How could I call a module or something else to return data to me after its ran. I don't want to make my form1 code all messy.
Public Function Test() As String
Return "Tes34t"
End Function
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Returning A Multidimension Array From A Function?
Mar 15, 2010I'm having trouble finding out how define this function so I can return the arrayRight now I am defining the returnobject as 'object' but I would like to do it properly.The Function goes something like this:
View 2 RepliesReturning A Value From A Function That Can Copy To A Queue?
May 14, 2011How do i return a value from a function that i can copy to a queue?I imagine that value must also be a queue.
View 4 RepliesReturning Error In Boolean Function
Mar 14, 2012I'm making a class and I have a function in this class the is looking to see if a user account in enabled.
Public Function IsEnable(byval user as string) as boolean
'if user is enables
return true
else
return fulse
end function
What is it just does not find the user, how would I return an error that the person using the DLL could detect and catch?
Returning Errors From A WCF Service Function?
Sep 1, 2009I have a WCF Service Function that Returns a typed dataset. How can I return an error or message to the client?Public Function ReturnMyDS(Byval Identity as Integer) as dsMyDataSet Implements Iservice.ReturnMyDS
Try
Return = RetrievemyDataset
Catch ex as exception
[code]...
Returning Multiple Values From Function
Mar 17, 2009I am working on a project I would like to use a function in a class I created to return multiple values in order to populate a listbox. I wanted to use a do until loop to achieve this. I will just post a simplified example of what I am doing :
Public Function Listboxfiller
Dim astring As String = "This is a string"
Dim Counter as integer = 0
Do until Counter = 5
return astring
Counter += 1
Loop
Then on the form I would do something like :
lstListbox.Items.Add(Myclass.Listboxfiller)
What happens right now is that the listbox only gets the first value, when I ran through in debug mode I found the loop only runs once, even though it should go multiple times.
Returning New Array Dimension From Within Function
Jun 22, 2011I'm trying to return changes to array data, including redimensioned arrays, from within a function call in code similar to:
fault = MyFunction(Array1, Array2)
Public Function MyFunction(ByVal inObj1 as UserStruture(), ByVal inObj2 and Integer(,)) as String
Dim myResult as String = "Failed"
Dim tmpStruct() as UserStructure = inObj1
[Code] .....
This works fine in updating the input array 'Array1', only when the redimensioning of tmpStruct is NOT performed. After redimensioning tmpStruct, the redimensioned array is passed back successfully into 'inObj1' within the function 'MyFunction', but is not passed out of the function call; i.e.
fault = MyFunction(Array1, Array2) -
The dimension of array 'Array1' out of the function call remains as it was before the function call. However, the data change; i.e.
tmpStruct(0).Nam = "New Name"
is passed successfully out of the function call.
Why the Redim operation is not passed back out of such function calls. I would like to return changes to arrays 'Array1' and 'Array2', plus a result string from the function call if I can. Furthermore, I would also like to change the dimension of the array within the function call, if required, and return the complete redimensioned array back out of the function call.
VB Script - Returning Objects From Function?
Mar 22, 2012I want to return an object from a Function. I have used "set" as I should. However, I cannot access the damn object when I return it! Here is the code.
Function GetDPListforPkg(Byval PackageID)
Log "Getting list of assigned DPs for Package " & PackageID
Dim DP, DPs, loc, WBemServices
Set loc = CreateObject("WbemScripting.SWbemLocator")
Set WbemServices = loc.ConnectServer(strCentralSiteSvr , "rootSMSsite_" & strCentralSiteCode)
Set DPs = WbemServices.ExecQuery("Select * From SMS_DistributionPoint WHERE PackageID='" & PackageID & "'")
Set GetDPListforPkg = DPs
[Code]...
VS 2008 Pointer - Error32'System.Reflection.Pointer' Has No Type Parameters And So Cannot Have Type Arguments
Jul 15, 2010I have an open source project I converted to vb.net. I solved all the errors, except for one. This is the C# line
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Execute A Function Returning Either Datatable Or Dataset?
Jul 29, 2010I have two functions in a class. One function returns a datatable, the other one returns a dataset. Both functions are identical except of the return type (Datatable or dataset). I would like to have only one function which returns either dataset or datatable depending on what the user of the class wants. How can I do this.
Following code shows my function returning a datatable:
Public Shared Function ExecuteSPDatatable(ByVal storedProcedure As String, ByVal ParamArray parameters() As SqlParameter) As DataTable
Dim tbl As DataTable
[Code].....