Need solution for error : add is not a member of system.array ?

Question

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face = New HaarCascade("haarcascade_frontalface_default.xml")

      'Try
      Dim Labelsinfo As String = File.ReadAllText(Application.StartupPath & "/TrainedFaces/TrainedLabels.txt")
      Dim Labels As String() = Labelsinfo.Split("%"c)
      NumLabels = Convert.ToInt16(Labels(0))
      ContTrain = NumLabels
      Dim LoadFaces As String

      For tf As Integer = 1 To NumLabels + 1 - 1
          LoadFaces = "face" & tf & ".bmp"
          trainingImages.Add(New Image(Of Gray, Byte)(Application.StartupPath & "/TrainedFaces/" & LoadFaces))


          Labels.Add(Labels(tf))


      Next

What I have tried:

Basically this is c# code which i convert into vb.net successfully but
Error flow 'Add is not a member of System.array

Namespace declare as

Imports System.Collections.Generic

Variable declaration as
Public labels As List(Of String) = New List(Of String)()

Labels.Add(Labels(tf))

Can anybody give reason and solution in simple form.

Posted 18-Dec-19 21:48pm

Member 13893129

Updated 18-Dec-19 22:01pm

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Richard MacCutchan · Answer 1 · 2019-12-18T22:01:00

Solution 2

See Array Class (System) | Microsoft Docs[^], which has no Add method. If you want to build a list item by item then use a generic such as List<T> Class (System.Collections.Generic) | Microsoft Docs[^].

And please remove that redundant expression:

VB

For tf As Integer = 1 To NumLabels + 1 - 1

Posted 18-Dec-19 22:01pm

Richard MacCutchan

Comments

Member 13893129 19-Dec-19 4:10am

Dear Sir, please just tell me how to solve error here.

Labels.Add(Labels(tf))

Richard MacCutchan 19-Dec-19 4:19am

I just did, you need to use a List(T) for your Labels. An array does not have an Add method.

Richard MacCutchan 19-Dec-19 5:12am

Why are you adding an element of your list into the list a second time?

name1 = recognizer.Recognize(result)

What is the value of result at this point?

Member 13893129 19-Dec-19 5:19am

Can't explain, Please tell me as your way
This is multi face detection prg by using emgu. I just try to convert it into vb.net

Richard MacCutchan 19-Dec-19 5:28am

Sorry, but if you cannot understand your code then you cannot expect other people to be able to. I suggest you go back to the original source that you copied it from, and ask the person who wrote it.

Member 13893129 19-Dec-19 5:30am

Ok fine I will done it myself. Thanks to give your valuable time. bye..

Error solved out .....YES, I done it......

Member 13542818 9-Nov-21 22:09pm

how did you solve it. same problem for me. same type of conversion from c# to vb.net and same system. tnx

GKP1992 · Answer 2 · 2019-12-18T21:56:00

Solution 1

Quote:
Can anybody give reason and solution in simple form.

No.

Most probably you're missing a using directive.. something like System.Collections, but I'm not really sure.

Posted 18-Dec-19 21:56pm

GKP1992

Comments

Member 13893129 19-Dec-19 3:59am

I already
Imports System.Collections.Generic

Richard MacCutchan 19-Dec-19 4:17am

No, he is trying to use an Array instead of a List(T).