For Each function in VB

I am bad at VB and I tried converting the following C# function in VB which landed me with lots of errors... Can someone please help me converting this into VB.

C#

foreach (Google.GData.Client.IExtensionElementFactory  property in开发者_JS百科  googleEvent.ExtensionElements)
        {
            ExtendedProperty customProperty = property as ExtendedProperty;
            if (customProperty != null)
                genericEvent.EventID = customProperty.Value;                
        }

My conversion with multiple errors:

For Each Google.GData.Client.IExtensionElementFactory property in  googleEvent.ExtensionElements

            ExtendedProperty customProperty = property as ExtendedProperty
            If (customProperty <> null) Then
                genericEvent.EventID = customProperty.Value
            End If

        Next

http://www.developerfusion.com/tools/convert/csharp-to-vb/

Which will give you:

For Each [property] As Google.GData.Client.IExtensionElementFactory In googleEvent.ExtensionElements
    Dim customProperty As ExtendedProperty = TryCast([property], ExtendedProperty)
    If customProperty IsNot Nothing Then
        genericEvent.EventID = customProperty.Value
    End If
Next

As already posted, you can use an automated tool for such trivial conversions that don't use more advanced language features.

Note however: In VB, As is used to declare the type of a variable - not a cast, as it is in C#.

Thus

For Each property As Google.GData.Client.IExtensionElementFactory In googleEvent.ExtensionElements

    Dim customProperty As ExtendedProperty = TryCast(property, ExtendedProperty)

    If customProperty IsNot Nothing Then
        genericEvent.EventID = customProperty.Value
    End If

Next

For Each elem As Google.GData.Client.IExtensionElementFactory In googleEvent.ExtensionElements
    Dim customProperty As ExtendedProperty = DirectCast(elem, ExtendedProperty)
    If ExtendedProperty IsNot Nothing Then
        genericEvent.EventID = customProperty.Value
    End If
Next

Try That

Try this:

For Each property as Google.GData.Client.IExtensionElementFactory In googleEvent.ExtensionElements
     Dim customProperty As ExtendedProperty = CType(property, ExtendedProperty)
     If customerProperty IsNot Nothing Then
          genericEvent.EventID = customProperty.Value
     End If
Next

For Each property As Google.GData.Client.IExtensionElementFactory In googleEvent.ExtensionElements

    Dim customProperty As ExtendedProperty = TryCast(property, ExtendedProperty)

    If customProperty IsNot Nothing Then

        genericEvent.EventID = customProperty.Value

    End If

Next

One of the keys to VB.NET is that it is extremely verbose. Whenever a type is defined, it's generally using "name As type" . Similarly, null is Nothing in VB.NET and you do not use the equals operator to compare it in VB.NET. You use Is and IsNot.

Finally, as casts, or upon failure, it returns null in C#. In VB.NET, you use TryCast (rather than DirectCast).

You were pretty close. The main issue is your variable declarations.

in VB, declarations are almost reverse of C#.

I haven't tested it or anything, but the following code should work.

For Each [property] As Google.GData.Client.IExtensionElementFactory In googleEvent.ExtensionElements
    Dim customProperty as ExtendedProperty = [property]
    If customProperty IsNot Nothing Then
        genericEvent.EventID = customProperty.Value
    End If
Next