How to determine type of object

Question

0.00/5 (No votes)

See more:

Hello,

can someone show me how to get the type of object?

I have create an array under the class of object
and put several of user control in the the array

is that possible when the index of array was call
vb know what is the type of object?

cause i actually want to put the event listener to all of it
thank you

What I have tried:

sample code:

VB

dim _button as button = new button
dim _textbox as textbox = new textbox
dim _picturebox as picturebox = new picturebox

dim _objectArray() as object

_objectArray = new object() {}

_objectArray(_objectArray.count) = _button
_objectArray(_objectArray.count) = _textbox
_objectArray(_objectArray.count) = _picturebox

my idea was
for i as integer = 0 to _objectArray.count
addHandler _objectArray(i).MouseClick, addressOf BlaBlaBla
next

Posted 21-Feb-17 21:07pm

Arnold bin Boon Hoo

Updated 21-Feb-17 21:30pm

Patrice T

v3

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Graeme_Grant · Accepted Answer · 2017-02-21T21:16:00

Solution 1

off the top of my head:

VB

If TypeOf _textbox Is TextBox Then

Posted 21-Feb-17 21:16pm

Graeme_Grant

Comments

Arnold bin Boon Hoo 22-Feb-17 4:46am

Hello mate.
Thank you for advice :)

F. Xaver · Accepted Answer · 2017-02-21T21:30:00

If you are only putting in Controls of your form, better user Control over Object
Also List maybe better than a Array

Dim _button As Button = New Button
Dim _textbox As TextBox = New TextBox
Dim _picturebox As PictureBox = New PictureBox

Dim _ControlList As New List(Of Control)

_ControlList.Add(_button)
_ControlList.Add(_textbox)
_ControlList.Add(_picturebox)

For Each c As Control In _ControlList
    Select Case c.GetType
          Case GetType(TextBox)
              'addhandler stuff for textboxes
    End Select

   '//Update: or using TypeOf
   
    Select Case True
          Case TypeOf c Is TextBox
              'addhandler stuff for textboxes
    End Select

Next

as Graeme_Grant already mentioned TypeOf is for checking against Types.
if you have multiple selects a Select Case Statement might do the job better