SubSonicS
asked on
Array come back from a Function --- 300 Points
Hi, my question should be easy or impossible, i don't know..
Let me explain..
I'm working on a Control...my custom control....(Like OCX)...to implement it on Vb.Net standard EXE project..
Into my control i declared a structure and a Array like this:
Structure structSomething
dim Variable1 as string
dim Variable2 as string 'and so on...
End Structure
Friend myArrayVariable(100) as structSomething
I also have a Function to fill the array like this:
Friend Function FullMyArrayVariable()
myArrayVariable(1).variabl
myArrayVariable(1).variabl
'And so on...
End Function
Ok, now as you already know i can access myArrayVariable(100) within anywhere my control...
I want now to use this my control (Dll) into a standard Vb.Net project...
I need to pass myArrayVariable to a similar one to the standard EXE Project...
Naturally i declared a similar Variable into a Module:
Structure structSomething
dim Variable1 as string
dim Variable2 as string 'and so on...
End Structure
Friend myArrayVariable(100) as structSomething
How can i pass the myArrayVariable from the control to the project?
I tried to call a function from within my control like this:
Public Function PassData() as myArrayVariable
Return myArrayVariable
End Function
But i cannot do this because i cannot call a function and decleare it as an Array...
Then i tried to do this:
Public Function PassData()
Return myArrayVariable
End Function
And from within my project do somithing like this:
myArrayVariable = myControl.PassData
But i cannot do this because i receive an error...
Another way to do all this should be to use a Property, i already know, but i want to access myArrayVariable only at runtime....(After a developer request it by a function)....
I'm Italian, then i don't know if you should understand my bad English language...Sorry..
Then this is a little summing up:
How i can pass an array(100) declared with a structure from a Control to a Form?
Please if you don't understand something then please let me know...i will try to explain it better...
Really thanks for any type of Help! ;)
Stefano
Let me explain..
I'm working on a Control...my custom control....(Like OCX)...to implement it on Vb.Net standard EXE project..
Into my control i declared a structure and a Array like this:
Structure structSomething
dim Variable1 as string
dim Variable2 as string 'and so on...
End Structure
Friend myArrayVariable(100) as structSomething
I also have a Function to fill the array like this:
Friend Function FullMyArrayVariable()
myArrayVariable(1).variabl
myArrayVariable(1).variabl
'And so on...
End Function
Ok, now as you already know i can access myArrayVariable(100) within anywhere my control...
I want now to use this my control (Dll) into a standard Vb.Net project...
I need to pass myArrayVariable to a similar one to the standard EXE Project...
Naturally i declared a similar Variable into a Module:
Structure structSomething
dim Variable1 as string
dim Variable2 as string 'and so on...
End Structure
Friend myArrayVariable(100) as structSomething
How can i pass the myArrayVariable from the control to the project?
I tried to call a function from within my control like this:
Public Function PassData() as myArrayVariable
Return myArrayVariable
End Function
But i cannot do this because i cannot call a function and decleare it as an Array...
Then i tried to do this:
Public Function PassData()
Return myArrayVariable
End Function
And from within my project do somithing like this:
myArrayVariable = myControl.PassData
But i cannot do this because i receive an error...
Another way to do all this should be to use a Property, i already know, but i want to access myArrayVariable only at runtime....(After a developer request it by a function)....
I'm Italian, then i don't know if you should understand my bad English language...Sorry..
Then this is a little summing up:
How i can pass an array(100) declared with a structure from a Control to a Form?
Please if you don't understand something then please let me know...i will try to explain it better...
Really thanks for any type of Help! ;)
Stefano
ASKER CERTIFIED SOLUTION
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How to move arrays into parameters and returns? Just like any other type:
Public Function CopyByteArray(arraySource(
Dim result() as Byte
Dim index as Integer
Redim result(arraySource.getUppe
For index = 0 To arraySource.getUpperBound(
result(index) = arraySource(index)
Next
Return result
End Function
A little example that shows how the system works ...
Just tell me if you need more!
Public Function CopyByteArray(arraySource(
Dim result() as Byte
Dim index as Integer
Redim result(arraySource.getUppe
For index = 0 To arraySource.getUpperBound(
result(index) = arraySource(index)
Next
Return result
End Function
A little example that shows how the system works ...
Just tell me if you need more!
ASKER
Thanks to all..BUT...
Idle_Mind: Thanks for this, i will try it soon, but i need before to search a way to do it without Property....
Todhd: Thanks for this, but i'm able to pass only a single matrix Array like myArray(1) and so on.. I need to pass a complete full Array with all the matrix, like simple myArray()
SoMos: It does not work for me...
Please, let me explain more:
ok, this is my real code on the UserControl:
Structure strDevices
Dim CompleteString As String
Dim BusId As String
Dim Type As String
Dim Revision As String
End Structure
Friend Devices(100) As strDevices
The UserControl now is able to fill the Devices(100) with a function named ScanBus..
At the end of ScanBus i could have a variable like this:
Devices(1).CompleteString = "Liteon....."
Devices(1).BusId = "1:1:0"
Devices(1).Type = "DVD-RW"
Devices(1).Revision = "1.0"
Devices(2).CompleteString = "Pioneer....."
Devices(2).BusId = "1:2:0"
and so on.....
Now the user of my UserControl will need to fill a similar variable like Devices(100) inside its application...
Naturally i'm able to create a simple function like this:
Public Function WolverineRecDev_GetDevices
ScanBus()
Return Devices(1).CompleteString
End Function
And the user should be able to create this:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Devices(1).CompleteString = WolverineRecDev1.Wolverine
MsgBox(Devices(1).Complete
End Sub
OK, this work with only Devices(1) (Only one matrix) and most important with only one property (in this case the .CompleteString)
My real need is to pass the entire Devices() in one time......
I hope this is more clear for you....
350 Points now...
Idle_Mind: Thanks for this, i will try it soon, but i need before to search a way to do it without Property....
Todhd: Thanks for this, but i'm able to pass only a single matrix Array like myArray(1) and so on.. I need to pass a complete full Array with all the matrix, like simple myArray()
SoMos: It does not work for me...
Please, let me explain more:
ok, this is my real code on the UserControl:
Structure strDevices
Dim CompleteString As String
Dim BusId As String
Dim Type As String
Dim Revision As String
End Structure
Friend Devices(100) As strDevices
The UserControl now is able to fill the Devices(100) with a function named ScanBus..
At the end of ScanBus i could have a variable like this:
Devices(1).CompleteString = "Liteon....."
Devices(1).BusId = "1:1:0"
Devices(1).Type = "DVD-RW"
Devices(1).Revision = "1.0"
Devices(2).CompleteString = "Pioneer....."
Devices(2).BusId = "1:2:0"
and so on.....
Now the user of my UserControl will need to fill a similar variable like Devices(100) inside its application...
Naturally i'm able to create a simple function like this:
Public Function WolverineRecDev_GetDevices
ScanBus()
Return Devices(1).CompleteString
End Function
And the user should be able to create this:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Devices(1).CompleteString = WolverineRecDev1.Wolverine
MsgBox(Devices(1).Complete
End Sub
OK, this work with only Devices(1) (Only one matrix) and most important with only one property (in this case the .CompleteString)
My real need is to pass the entire Devices() in one time......
I hope this is more clear for you....
350 Points now...
SOLUTION
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>> Idle_Mind: Thanks for this, i will try it soon, but i need before to search a way to do it without Property....
A function and a property are essentially the same thing. As others and I have already pointed out, you can return an entire array. Out of curiosity, why can't you use a property?
Change my property to a function:
Public Function StructArray() As myStructure()
Return myStructArray
End Property
Then declare your array and call the function:
Private myStructArray() As myUserControl.myStructure
myStructArray = = MyUserControl1.StructArray
~IM
A function and a property are essentially the same thing. As others and I have already pointed out, you can return an entire array. Out of curiosity, why can't you use a property?
Change my property to a function:
Public Function StructArray() As myStructure()
Return myStructArray
End Property
Then declare your array and call the function:
Private myStructArray() As myUserControl.myStructure
myStructArray = = MyUserControl1.StructArray
~IM
ASKER
I SoMos,
if i do this i get this error:
Unable to convert type "1 dimension matrix WolverineRecDev.modVariabl
I think of if i declare a function as a structure, maybe i cannot Return back a simple 1 dimension array...
>>>>What I don't see well is why your user control has to fill one array of strDevices and the >>>>user has to fill another one. They will not have the same content? If they have you only >>>>need to store its reference inside the user program, not need to fill another array, of >>>>course!
Well, in my User Control i naturally use Modules...
my Devices(100) array is declared within a module, elsewhere if i declare in on the User Control i cannot access it from modules....then....i cannot use it from a Form because it only can see Public Variables declared into the Main User Control and not into the modules....
Please copy and paste this code into a standard Exe Project:
Structure myStructure
Dim String1 As String
Dim String2 As String
End Structure
Friend myVariable(100) As myStructure
Public Function GetVariables() As myStructure
'Assign something like my ScanBus do...
myVariable(1).String1 = "Hi"
myVariable(1).String2 = "Stefano"
'Now try to return back the Array....
Return myVariable
End Function
Like me you will get an error on myVariable....
Really thanks for your time.... :)
Message for IDLE_MIND: Thanks, now i will try your code...
Please wait a while for the reply...
P.S. i'm starting to think to really use a property....eheh
if i do this i get this error:
Unable to convert type "1 dimension matrix WolverineRecDev.modVariabl
I think of if i declare a function as a structure, maybe i cannot Return back a simple 1 dimension array...
>>>>What I don't see well is why your user control has to fill one array of strDevices and the >>>>user has to fill another one. They will not have the same content? If they have you only >>>>need to store its reference inside the user program, not need to fill another array, of >>>>course!
Well, in my User Control i naturally use Modules...
my Devices(100) array is declared within a module, elsewhere if i declare in on the User Control i cannot access it from modules....then....i cannot use it from a Form because it only can see Public Variables declared into the Main User Control and not into the modules....
Please copy and paste this code into a standard Exe Project:
Structure myStructure
Dim String1 As String
Dim String2 As String
End Structure
Friend myVariable(100) As myStructure
Public Function GetVariables() As myStructure
'Assign something like my ScanBus do...
myVariable(1).String1 = "Hi"
myVariable(1).String2 = "Stefano"
'Now try to return back the Array....
Return myVariable
End Function
Like me you will get an error on myVariable....
Really thanks for your time.... :)
Message for IDLE_MIND: Thanks, now i will try your code...
Please wait a while for the reply...
P.S. i'm starting to think to really use a property....eheh
ASKER
Another strange....
From within a single project, i'm able to declare two Arrays as the same structure and copy between they like this:
Structure myStructure
Dim String1 As String
Dim String2 As String
End Structure
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim myFirstVariable() As myStructure
Dim mySecondVariable() As myStructure
'Assign some values:
myFirstVariable(1).String1
myFirstVariable(1).String2
'Now i can copy one to another:
mySecondVariable = myFirstVariable
'And/Or viceversa:
myFirstVariable = mySecondVariable
MsgBox(mySecondVariable(1)
End Sub
If i can do this within the same project, why i cannot copy myArray from the user control to a similar Array to the Form?
lol: I'm not a real programmer, i know!
From within a single project, i'm able to declare two Arrays as the same structure and copy between they like this:
Structure myStructure
Dim String1 As String
Dim String2 As String
End Structure
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim myFirstVariable() As myStructure
Dim mySecondVariable() As myStructure
'Assign some values:
myFirstVariable(1).String1
myFirstVariable(1).String2
'Now i can copy one to another:
mySecondVariable = myFirstVariable
'And/Or viceversa:
myFirstVariable = mySecondVariable
MsgBox(mySecondVariable(1)
End Sub
If i can do this within the same project, why i cannot copy myArray from the user control to a similar Array to the Form?
lol: I'm not a real programmer, i know!
ASKER
IDLE_MIND
I think your code is the same as SoMos
and this reply it is also for you:
Structure myStructure
Dim String1 As String
Dim String2 As String
End Structure
Friend myVariable(100) As myStructure
Public Function GetVariables() As myStructure
'Assign something like my ScanBus do...
myVariable(1).String1 = "Hi"
myVariable(1).String2 = "Stefano"
'Now try to return back the Array....
Return myVariable
End Function
Like me you will get an error on myVariable....
Really thanks for your time.... :)
I think your code is the same as SoMos
and this reply it is also for you:
Structure myStructure
Dim String1 As String
Dim String2 As String
End Structure
Friend myVariable(100) As myStructure
Public Function GetVariables() As myStructure
'Assign something like my ScanBus do...
myVariable(1).String1 = "Hi"
myVariable(1).String2 = "Stefano"
'Now try to return back the Array....
Return myVariable
End Function
Like me you will get an error on myVariable....
Really thanks for your time.... :)
When you declare the structure in your project, are you re-creating it? In other words do you have this:
Structure myStructure
Dim String1 As String
Dim String2 As String
End Structure
In both the class and the calling project?
My suggestion would be to make the structure in the class public, like this:
Public Structure myStructure
Dim String1 As String
Dim String2 As String
End Structure
And then in the calling project, assign variables like this:
MyVariable(100) as myClass.myStructure
Structure myStructure
Dim String1 As String
Dim String2 As String
End Structure
In both the class and the calling project?
My suggestion would be to make the structure in the class public, like this:
Public Structure myStructure
Dim String1 As String
Dim String2 As String
End Structure
And then in the calling project, assign variables like this:
MyVariable(100) as myClass.myStructure
SOLUTION
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To access this solution, you must be a member of Experts Exchange.
I agree with toddhds last post and if you look at my first post, this is exactly what I have done.
~IM
~IM
ASKER
Hello friends,
thank to you all i think of i'm now able to proceed...
Please give me a little time to try the best way for my app and i will give you my points...
Really thanks for your time...
Hope to meet you all again..
thank to you all i think of i'm now able to proceed...
Please give me a little time to try the best way for my app and i will give you my points...
Really thanks for your time...
Hope to meet you all again..
ASKER
WELL,
it is all OK!!! Thanks!
This is my SIMPLE! code:
On the User Control:
Public Structure structureDevices
Dim CompleteString As String
Dim BusId As String
Dim Type As String
Dim Revision As String
End Structure
Public Devices(100) As structureDevices
Public Function WolverineRecDev_GetDevices
ScanBus()
Return Devices
End Function
And on the Form:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim myDevices() As WolverineRecDev.WolverineR
myDevices = WolverineRecDev1.Wolverine
MsgBox(myDevices(1).Comple
MsgBox(myDevices.Length)
End Sub
THANKS!
I used also MsgBox(myDevices.Length) because i was able to redimensionate the array after filled with only the necessary devices preserving all the data:
Redim Preserve Devices(NewValue)
Really Thanks to all...
A great See You by Wolverine from Italy!
Well, for my Points...
All you are the winners...
Then i will distribute it to you all, Ok?
Thanks a lot...
it is all OK!!! Thanks!
This is my SIMPLE! code:
On the User Control:
Public Structure structureDevices
Dim CompleteString As String
Dim BusId As String
Dim Type As String
Dim Revision As String
End Structure
Public Devices(100) As structureDevices
Public Function WolverineRecDev_GetDevices
ScanBus()
Return Devices
End Function
And on the Form:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim myDevices() As WolverineRecDev.WolverineR
myDevices = WolverineRecDev1.Wolverine
MsgBox(myDevices(1).Comple
MsgBox(myDevices.Length)
End Sub
THANKS!
I used also MsgBox(myDevices.Length) because i was able to redimensionate the array after filled with only the necessary devices preserving all the data:
Redim Preserve Devices(NewValue)
Really Thanks to all...
A great See You by Wolverine from Italy!
Well, for my Points...
All you are the winners...
Then i will distribute it to you all, Ok?
Thanks a lot...
ASKER
Ops, i accepted only Tohhd....mmmmm....
I cannot distribute points? I cannot select also Assisted Answer?
I cannot distribute points? I cannot select also Assisted Answer?
Who else should have gotten points? Maybe the admins can help? Or maybe I can open a bogus question myself and reward the points to the other users?
You can post a request to the question reopened from in the Support TA:
https://www.experts-exchange.com/Community_Support/
Then you can click on "Split Points" at the bottom of the page once it is reopened.
~IM
https://www.experts-exchange.com/Community_Support/
Then you can click on "Split Points" at the bottom of the page once it is reopened.
~IM
ASKER
Hi, i asked to be reopened...
P.S. Thanks Again...
P.S. Thanks Again...
ASKER
LOL, thanks to moderator to re-open...
Accepted the Answer of todhd because it was the first to get my bug...
118 Points to Idle_Mind because it follow me evrywhere! (Joke! only because it has given more then 1 solution...)
Thanks to the posters...
Accepted the Answer of todhd because it was the first to get my bug...
118 Points to Idle_Mind because it follow me evrywhere! (Joke! only because it has given more then 1 solution...)
Thanks to the posters...
Public Class myUserControl
Inherits System.Windows.Forms.UserC
Public Structure myStructure
Public dataA As String
Public dataB As String
Public dataC As String
End Structure
Friend myStructArray(100) As myStructure
Public ReadOnly Property StructArray() As myStructure()
Get
Return myStructArray
End Get
End Property
Private Sub myUserControl_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim i As Integer
For i = 0 To myStructArray.GetUpperBoun
myStructArray(i).dataA = "a" & i
myStructArray(i).dataB = "b" & i
myStructArray(i).dataC = "c" & i
Next
End Sub
End Class
And here is a form that makes a copy of the array in the control using the exposed StructArray() property:
Public Class Form1
Inherits System.Windows.Forms.Form
Private myStructArray() As myUserControl.myStructure
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim i As Integer
mystructarray = MyUserControl1.StructArray
For i = 0 To mystructarray.GetUpperBoun
Debug.WriteLine(mystructar
Next
End Sub
End Class