I imagine that this is a rather simple task; however I do not have a particularly large depth of knowledge and experience in VB…
I have an arrangement of text boxes (id1_1, id1_2, id2_1, id2_2) which I wish to be able to reference in my code from a string such that I can change the text box’s text etc. I receive the data required to construct the string from a connected serial device.
What I require is a method to construct a textbox object
reference from a string, something like
getObjRef(string) as object
Cheers
Wilbo
How to reference a textbox via a string in code?
ashish1482
perhaps you could simply iterate through the controls collection of the form until you find the correct control.
Dim c as control
for each c in form1.controls
if c.name="textbox1" then c.text="my new string"
next c
Rania
Thanks guys.
Cheers
Wilbo
-----------------------------------------------------------------------------
Dim c As Control
c = rec_find_control("textBox1", Me.Controls)
If c Is Nothing Then
'not found
Else
c.Text = "FOUND!"
End If
'Returns the contol with the name "str", or nothing if it
'it was unable to find the control
Private Function rec_find_control(ByVal str As String, ByVal cc As Object) As Control
Dim c As Control
Dim con As Control
For Each c In cc
If c.Name = str Then
Return c
End If
If c.HasChildren() Then
con = rec_find_control(str, c.Controls)
If con Is Nothing Then
Else
Return con
End If
End If
Next c
Return Nothing
End Function
Humphery
To do this requires the use of reflection, or if you know the parent form, you can iterate through it's control collection, looking for a control of that name.
Pïeter
Reflection means you can query a class for methods and objects, pretty much in the way you're hoping to. It'
http://www.developerland.com/DotNet/General/187.aspx
I've not read this, but a quick scan would suggest it's the best article I found.
huseyin_
Currently I use a select, case statement to select the correct textbox based on the string, I understand that I could iterate through the parent control, however this all seems very inelegant.
I am hoping there is an elegant solution that I am unaware of :)
Reflection
(thanks for your reply by the way)
Cheers
Wilbo