structure element index / iterate

[mlafarlett]

Anyone know of a way to loop through the elements of a structure?
maybe something like a 'for each element in elements' kind of thing?

Thx,
Michael

 

[Greg Young]

You could use reflection (GetFields() etc).

Cheers,

Greg

 

[mlafarlett]

alternative?...that kinda painful

 

[John Bailo]

foreach( element e in elements ) {}

 

[mlafarlett]

but what is 'element' and 'elements'...how r they defined? I don't
believe those are available as is pertains to a structure

 

[Greg Young]

Just to be clear ... you want to iterate all of its public fields?

There are other possiblities depending what you are trying to do with the
data?

Cheers,

Greg

 

[mlafarlett]

I was just wanting to concatenate each element in the structure into a
string...there are hundreds of elements and I didn't want to reference
each one of them by name.

 

[Greg Young]

Reflections is going to be the way to go
http://msdn2.microsoft.com/en-US/library/ch9714z3.aspx

 

[mlafarlett]

Works great..thanks...here's the code sample:

Imports System.Reflection

Module Module1

Structure record
Dim s1 As String
Dim si As Int16
Dim sTest As String
End Structure

Public Sub Main()

Try
Dim i As Integer
Dim myType As Type = GetType(record) 'Get the type of the object we
care about
Dim myField As FieldInfo() = myType.GetFields() 'Get the fields from
my 'type'

For i = 0 To myField.Length - 1
Console.WriteLine("Field name = {0} and type = {1}.",
myField(i).Name, myField(i).FieldType)
Next i
Catch e As Exception
Console.WriteLine("Exception : {0} ", e.Message.ToString()) End Try

End Sub 'Main

End Module