Control Arrays

As we know, with VB.Net I cant have a control array eg, Text1(1).text , Text1(2).text etc

This poses a slight problem to me when migrating my VB6 App as I use this feature considerably

I was wondering if the following was possible in VB.Net

1) Create a String Array

eg,

Code:

---

Dim ContArr(10) as String

---

2) Load the ContArr with NON INDEXED control Names

eg,

Code:

---

ContArr(1) = "Text1.text"
ContArr(2) = "Text2.text"
ContArr(3) = "Text3.text"
ContArr(4) = "Text4.text"

---

3) Use the ContArr to Point to the Control to be Used

THIS IS THE BIT I DONT UNDERSTAND HOW TO DO

Something like

Code:

---

"the control name held in ContArr(I)" = CustomerCode

---

Is this possible ?

Re-think that. What you need is a CLASS, maybe a field, or even a record.
You can easily create instances of a class, and keep your information there. Just use one set of textboxes, with meaningful names for the destination/output

The bottom line is I am simply trying to duplicate Control Indexing, in the simplest manner possible

I suggested

Code:

---

"the control name held in ContArr(I)" = CustomerCode

---

Trying to Duplicate the VB6 possibility of

Code:

---

Text1(I) = CustomerCode

---

It may not be possible - if thats the case then I need to bite the bullet and change the way my programs work completely

Why not just use Control Collections ¿ :confused: :)

Control Collections - Gee that sounds so simple - is that a One Liner like my example or is it a War and Peace effort ? (I'm new to VB.Net so I don't have a clue what you mean)

Are you able to show an example please using my example of trying to duplicate Text1(1), Text1(2) etc

Thanks

Quote:

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Originally Posted by George1111

Control Collections - Gee that sounds so simple - is that a One Liner like my example or is it a War and Peace effort ? (I'm new to VB.Net so I don't have a clue what you mean)

---

Shoot me for trying to help George... So, sorry. :confused:

OK, back to the question at hand. George, some time ago, you asked the exact same question, and you basically got the exact same answers / some small variations on these answers ( Collections ) as well. Have a look at these threads :

http://www.codeguru.com/forum/showth...l+array+george

http://www.codeguru.com/forum/showth...l+array+george

http://www.codeguru.com/forum/showth...l+array+george

Once again, I apologise for trying to help. I always thought that that, is what CG is all about... :eek:

Hi Hannes

Firstly, Sincere apologies for pushing the wrong buttons .. you really are a patient and helpful friend who deserves better than my frustrations:o

You are right - I did ask the same question before - I was hoping to get a different answer - I was hoping it was possible in VB.Net to "Write out a VB Instruction, then cause it to be executed"

Something like writing out a script file in VB6 then executing it, I believe

The script files (from memory) can even be keyed into a text box then executed from the string produced

Hopefully this could also be done in VB.Net (process a script file)

Is this possible ?

You mean you want to let a user type FORMAT C: and see what happens?

If you want, you can create a batch file, and execute it in a separate thread, but that could have bad results...

I was hoping you could key into a textbox, an instruction like

Code:

---

TextBoxABC.Text = "AAAAAAAAAAA"

---

And by sending that text to a script processor, it would put the value into the textbox. I was hoping this could be executed from within the actual program, rather than launching a batch file.

I have a vague memory you can do this in VB6 (even though I've never done it myself)

I think I've found the VB6 routine for what I am trying to do in VB.Net

THe references are in the vB6 Application are:

Microsoft Script Control 1.0
Microsoft Scripting Runtime

Attached is a VB6 Example of how Scripting works

My question is

Can this be done with VB.Net ?

It is called ........ ? (Same as VB6 ?)

Thanks

Did you read my post about the problems with scripting that users can access, but you can use jScript or regular Scripting
Converted:

Code:

---

Option Strict Off
Option Explicit On
Friend Class Form1
        Inherits System.Windows.Forms.Form
       
        ' Add a reference to Microsoft Script Control 1.0
       
        Private Sub Form1_Load(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles MyBase.Load
        Dim dbl1 As Double
                Dim x As New MSScriptControl.ScriptControl
        Dim z As Short, a As Short
                Dim q As String
        z = 55
        a = 24
        q = "*"
        x.Language = "vbScript"
        MsgBox(VB6.Format(x.Eval(z & q & a), "standard"))
               
                ' ===============================================
               
        Dim str1 As String = "(5+50)*2/3"
                dbl1 = (x.Eval(str1))
                MsgBox(dbl1)
        End Sub
End Class

---

This could be entered into a textbox:

Code:

---

str1 = "Format C:\"
 dbl1 = (x.Eval(str1))

---

I see your point about the danger - I guess you'd have to check what is being keyed looking for dangerous commands, before executing them

I was looking more to build commands and instructions internally and then execute them internally

eg, If I can script

Code:

---

"Text1.Text = 'AAAAAAAAAAAAAAA'"

---

Then I have finally achieved the ability to then also script

Code:

---

"Text2.Text = 'BBBBBBBBBBBBBB"

---

Which therefore means I can reiterate through a scripted loop and effectively achieve the same as I would in VB6 indexed text boxes

Code:

---

Text1(1) = "AAAAAAAAAAAAAAAA"
Text1(2) = "BBBBBBBBBBBBBBBB"

---

Use a CLASS that contains Control, and String values, and then create instances of each class.

Code:

---

Public Class cntlClass
    Private cntl As Control ' Textbox1
    Private myval As String ' "AAAAAAAAA"
End Class

---

Then, you could use this:

Code:

---

dim cx as list(of cntlClass)

---

This sound like it is getting close to the mark. and more importantly, looks simple enough for a concrete head like me to understand.

Thanks - I'll see how I can use this in my new journey with VB.Net

The "logic" by David ( in Post # 13 ), George, is called Generics. A very very powerful technology present with .NET, which can be so easily implemented. Yes, at first when you delve into Generics etc. it may seem a bit odd, or tough, but, once you get the hang of it, you will struggle to find places where not to use it :)

When you have time, you could look at these :

http://www.codeguru.com/csharp/.net/...cle.php/c11887

http://msdn.microsoft.com/en-us/library/6sh2ey19.aspx

BTW, I also had a tough day ( I hate being sick ), so it's me that should apologise for my previous ( childish ) post, George! :D