How can i do this

Hi :)

Hi can i set the text of a label from a class.

Yes of course.

In that class write a function which accepts the Test & the referenced label as an argument. Call the function whenever u needed. Make sure to pass by refernce. But I think this is waste of time.

If you wanted to keep the UI out of your class you could also fire off an event that your form is subscribed to. Then the form could change the text when the event is handled.

can anyone please post any example

VB Code:

Public Class Example
 
   Public Shared Sub SetText(ByVal lbl As Label, ByVal text As String)
      lbl.Text=text
   End Sub
 
End Class
 
'syntax
Example.SetText(Label1,"Some Text")

VB Code:

'Code In Class
 
Public Class cSampleClass
 
    Public Event InfoForTextbox(ByVal strInfo As String)
 
 
    Public Function DoSomething()
        '.....
 
        RaiseEvent InfoForTextbox("Hello")
 
        '.....
    End Function
 
End Class

VB Code:

Public Class Form1
    Inherits System.Windows.Forms.Form
 
    WithEvents cSample As cSampleClass
 
'|| form designer code here 
 
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        cSample.DoSomething()
    End Sub
 
    Private Sub CalledWhenInfoIsPassed(ByVal strInfo As String) Handles cSample.InfoForTextbox
        LabelName.Caption = strInfo
    End Sub
End Class

Just consider i am using the code posted by <ABX.
Now if i creates multiple instances(mutithreads) of cSampleClass class in a loop will CalledWhenInfoIsPassed handle each instance.

I don't think you can use WithEvents with an array still, so you'[d have to add each new instance using the AddHandler instead of WithEvents.