Iterating through some controls on a webform

[DrTeeth]

I new to ASP.NET and got slightly confused on a probably simple little
issue.

I am try to iterate through some ASP radio buttons to see which of them is
checked.

But I get the error :

Unable to cast object of type 'System.Web.UI. LiteralControl' to type
'System.Web.UI. WebControls.Rad ioButton'.

The error occurs in the line : For Each rdbChecked In Me.Controls

Any help would be much appreciated. TIA

Protected Sub cmdSearch_Click (ByVal sender As Object, ByVal e As
System.EventArg s)

Dim rdbChecked As RadioButton
Dim sURL As String = ""
For Each rdbChecked In Me.Controls
If rdbChecked.Chec ked Then
sURL = GetSearchString (rdbChecked.ID) & txtSearch.Text
End If
Next

Response.Redire ct(sURL)

End Sub

[Mark Rae [MVP]]

Re: Iterating through some controls on a webform

"DrTeeth" <not@here.comwr ote in message
news:%23aQfxWf4 IHA.2064@TK2MSF TNGP02.phx.gbl. ..

Any help would be much appreciated. TIA

The error is caused because not every Control in the form is a RadioButton.

So you would need something like:

Dim objControl As Control
For Each objControl In Me.Controls
If objControl.GetT ype().Name = "RadioButto n" Then
If rdbChecked.Chec ked Then
' whatever
End If
End If
Next


--
Mark Rae
ASP.NET MVP

http://www.markrae.net

[DrTeeth]

Re: Iterating through some controls on a webform

Ok thanks alot :)

"Mark Rae [MVP]" <mark@markNOSPA Mrae.netwrote in message
news:%23uDAekf4 IHA.3480@TK2MSF TNGP03.phx.gbl. ..

"DrTeeth" <not@here.comwr ote in message
news:%23aQfxWf4 IHA.2064@TK2MSF TNGP02.phx.gbl. ..
>

>Any help would be much appreciated. TIA

>
The error is caused because not every Control in the form is a
RadioButton.
>
So you would need something like:
>
Dim objControl As Control
For Each objControl In Me.Controls
If objControl.GetT ype().Name = "RadioButto n" Then
If rdbChecked.Chec ked Then
' whatever
End If
End If
Next
>
>
--
Mark Rae
ASP.NET MVP
http://www.markrae.net