Mixing
How Can I make string expression variable [duplicate]
This question already has an answer here:
How To Get Control Property by “String Name”?
5 answers
I made over a hundred checkbox for movie ticketing project(University)
and We have to check what checkbox is checked.
but We couldn't make it through.
I thought
For i As Integer = 1 To 180 Step 1
If ("checkbox" & i).checked = True Then
'blah blah blah
End If
Next
I know it's not grammatical-right but you know what I mean.
please help us :( we hold it very long time...
ps. of course, we can make another route to this system.
But I want to know it.
Thanks.
vb.net
asked Nov 21 '18 at 22:58
K.JHK.JH
71
marked as duplicate by Ahmed Abdelhameed, None of the Above vb.net
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Nov 22 '18 at 1:07
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
add a comment |
This question already has an answer here:
How To Get Control Property by “String Name”?
5 answers
I made over a hundred checkbox for movie ticketing project(University)
and We have to check what checkbox is checked.
but We couldn't make it through.
I thought
For i As Integer = 1 To 180 Step 1
If ("checkbox" & i).checked = True Then
'blah blah blah
End If
Next
I know it's not grammatical-right but you know what I mean.
please help us :( we hold it very long time...
ps. of course, we can make another route to this system.
But I want to know it.
Thanks.
vb.net
asked Nov 21 '18 at 22:58
K.JHK.JH
71
marked as duplicate by Ahmed Abdelhameed, None of the Above vb.net
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Nov 22 '18 at 1:07
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
add a comment |
This question already has an answer here:
How To Get Control Property by “String Name”?
5 answers
I made over a hundred checkbox for movie ticketing project(University)
and We have to check what checkbox is checked.
but We couldn't make it through.
I thought
For i As Integer = 1 To 180 Step 1
If ("checkbox" & i).checked = True Then
'blah blah blah
End If
Next
I know it's not grammatical-right but you know what I mean.
please help us :( we hold it very long time...
ps. of course, we can make another route to this system.
But I want to know it.
Thanks.
vb.net
asked Nov 21 '18 at 22:58
K.JHK.JH
71
This question already has an answer here:
How To Get Control Property by “String Name”?
5 answers
I made over a hundred checkbox for movie ticketing project(University)
and We have to check what checkbox is checked.
but We couldn't make it through.
I thought
For i As Integer = 1 To 180 Step 1
If ("checkbox" & i).checked = True Then
'blah blah blah
End If
Next
I know it's not grammatical-right but you know what I mean.
please help us :( we hold it very long time...
ps. of course, we can make another route to this system.
But I want to know it.
Thanks.
This question already has an answer here:
How To Get Control Property by “String Name”?
5 answers
vb.net
vb.net
asked Nov 21 '18 at 22:58
K.JHK.JH
71
asked Nov 21 '18 at 22:58
K.JHK.JH
71
asked Nov 21 '18 at 22:58
K.JHK.JH
71
asked Nov 21 '18 at 22:58
K.JHK.JH
71
asked Nov 21 '18 at 22:58
K.JHK.JH
71
71
marked as duplicate by Ahmed Abdelhameed, None of the Above vb.net
Users with the vb.net badge can single-handedly close vb.net questions as duplicates and reopen them as needed.
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Nov 22 '18 at 1:07
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
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Nov 22 '18 at 1:07
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
You can place all checkboxes in a group box and then make a loop for all checkboxes in it like this:
For Each ctrl In GroupBox1.Controls
If (ctrl.GetType() Is GetType(CheckBox)) Then
Dim chkbx As CheckBox = CType(ctrl, CheckBox)
End If
Next
Or if you insist on doing it with predefined strings then try something with directcasting:
For i as integer = 1 to 180 Step 1
dim chkbox as Checkbox = DirectCast(Controls("checkbox" & i.ToString), Checkbox )
If chkbox IsNot Nothing
' do something with the object now
End If
Next
answered Nov 21 '18 at 23:03
koksalbkoksalb
355713
1
And what if in that groupbox is another control per say a panel with checkboxs....? Do you think either of your solutions would work?
– Çöđěxěŕ
Nov 21 '18 at 23:12
never thought of that, still until reasonable sizes can be hard looped with For Each containertype in form first then for each ctrl in container1-2-3.controls i suppose. or if things get really messy DirectCast or CType or Find from id string would be a better approach.
– koksalb
Nov 21 '18 at 23:17
Thanks for helping! I'll check it soon.
– K.JH
Nov 22 '18 at 22:39
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can place all checkboxes in a group box and then make a loop for all checkboxes in it like this:
For Each ctrl In GroupBox1.Controls
If (ctrl.GetType() Is GetType(CheckBox)) Then
Dim chkbx As CheckBox = CType(ctrl, CheckBox)
End If
Next
Or if you insist on doing it with predefined strings then try something with directcasting:
For i as integer = 1 to 180 Step 1
dim chkbox as Checkbox = DirectCast(Controls("checkbox" & i.ToString), Checkbox )
If chkbox IsNot Nothing
' do something with the object now
End If
Next
answered Nov 21 '18 at 23:03
koksalbkoksalb
355713
1
And what if in that groupbox is another control per say a panel with checkboxs....? Do you think either of your solutions would work?
– Çöđěxěŕ
Nov 21 '18 at 23:12
never thought of that, still until reasonable sizes can be hard looped with For Each containertype in form first then for each ctrl in container1-2-3.controls i suppose. or if things get really messy DirectCast or CType or Find from id string would be a better approach.
– koksalb
Nov 21 '18 at 23:17
Thanks for helping! I'll check it soon.
– K.JH
Nov 22 '18 at 22:39
add a comment |
You can place all checkboxes in a group box and then make a loop for all checkboxes in it like this:
For Each ctrl In GroupBox1.Controls
If (ctrl.GetType() Is GetType(CheckBox)) Then
Dim chkbx As CheckBox = CType(ctrl, CheckBox)
End If
Next
Or if you insist on doing it with predefined strings then try something with directcasting:
For i as integer = 1 to 180 Step 1
dim chkbox as Checkbox = DirectCast(Controls("checkbox" & i.ToString), Checkbox )
If chkbox IsNot Nothing
' do something with the object now
End If
Next
answered Nov 21 '18 at 23:03
koksalbkoksalb
355713
1
And what if in that groupbox is another control per say a panel with checkboxs....? Do you think either of your solutions would work?
– Çöđěxěŕ
Nov 21 '18 at 23:12
never thought of that, still until reasonable sizes can be hard looped with For Each containertype in form first then for each ctrl in container1-2-3.controls i suppose. or if things get really messy DirectCast or CType or Find from id string would be a better approach.
– koksalb
Nov 21 '18 at 23:17
Thanks for helping! I'll check it soon.
– K.JH
Nov 22 '18 at 22:39
add a comment |
You can place all checkboxes in a group box and then make a loop for all checkboxes in it like this:
For Each ctrl In GroupBox1.Controls
If (ctrl.GetType() Is GetType(CheckBox)) Then
Dim chkbx As CheckBox = CType(ctrl, CheckBox)
End If
Next
Or if you insist on doing it with predefined strings then try something with directcasting:
For i as integer = 1 to 180 Step 1
dim chkbox as Checkbox = DirectCast(Controls("checkbox" & i.ToString), Checkbox )
If chkbox IsNot Nothing
' do something with the object now
End If
Next
answered Nov 21 '18 at 23:03
koksalbkoksalb
355713
You can place all checkboxes in a group box and then make a loop for all checkboxes in it like this:
For Each ctrl In GroupBox1.Controls
If (ctrl.GetType() Is GetType(CheckBox)) Then
Dim chkbx As CheckBox = CType(ctrl, CheckBox)
End If
Next
Or if you insist on doing it with predefined strings then try something with directcasting:
For i as integer = 1 to 180 Step 1
dim chkbox as Checkbox = DirectCast(Controls("checkbox" & i.ToString), Checkbox )
If chkbox IsNot Nothing
' do something with the object now
End If
Next
answered Nov 21 '18 at 23:03
koksalbkoksalb
355713
edited Nov 21 '18 at 23:12
answered Nov 21 '18 at 23:03
koksalbkoksalb
355713
answered Nov 21 '18 at 23:03
koksalbkoksalb
355713
answered Nov 21 '18 at 23:03
koksalbkoksalb
355713
355713
1
And what if in that groupbox is another control per say a panel with checkboxs....? Do you think either of your solutions would work?
– Çöđěxěŕ
Nov 21 '18 at 23:12
never thought of that, still until reasonable sizes can be hard looped with For Each containertype in form first then for each ctrl in container1-2-3.controls i suppose. or if things get really messy DirectCast or CType or Find from id string would be a better approach.
– koksalb
Nov 21 '18 at 23:17
Thanks for helping! I'll check it soon.
– K.JH
Nov 22 '18 at 22:39
add a comment |
1
And what if in that groupbox is another control per say a panel with checkboxs....? Do you think either of your solutions would work?
– Çöđěxěŕ
Nov 21 '18 at 23:12
never thought of that, still until reasonable sizes can be hard looped with For Each containertype in form first then for each ctrl in container1-2-3.controls i suppose. or if things get really messy DirectCast or CType or Find from id string would be a better approach.
– koksalb
Nov 21 '18 at 23:17
Thanks for helping! I'll check it soon.
– K.JH
Nov 22 '18 at 22:39
1
1
And what if in that groupbox is another control per say a panel with checkboxs....? Do you think either of your solutions would work?
– Çöđěxěŕ
Nov 21 '18 at 23:12
And what if in that groupbox is another control per say a panel with checkboxs....? Do you think either of your solutions would work?
– Çöđěxěŕ
Nov 21 '18 at 23:12
never thought of that, still until reasonable sizes can be hard looped with For Each containertype in form first then for each ctrl in container1-2-3.controls i suppose. or if things get really messy DirectCast or CType or Find from id string would be a better approach.
– koksalb
Nov 21 '18 at 23:17
never thought of that, still until reasonable sizes can be hard looped with For Each containertype in form first then for each ctrl in container1-2-3.controls i suppose. or if things get really messy DirectCast or CType or Find from id string would be a better approach.
– koksalb
Nov 21 '18 at 23:17
Thanks for helping! I'll check it soon.
– K.JH
Nov 22 '18 at 22:39
Thanks for helping! I'll check it soon.
– K.JH
Nov 22 '18 at 22:39
add a comment |
