CODEWITHSUNDEEP
c#.netvb.net
Jameel Moideen
Jameel Moideen

Reputation: 7931

Error Converting VB.NET to C# : obj' is a 'variable' but is used like a 'method'

I try to convert vb.net code to c# like below VB.NET

  Dim _obj As Object = _srv.GetData(_criteria)
            If _obj IsNot Nothing Then
                For Each Comp As ComponentItem In DirectCast(DirectCast(_obj("ComponentInformation"), Result).Output, List(Of ComponentItem))
                    _lstComp.Add(New Core.Component() With {.ComponentID = Comp.BusinessUnitID, .ComponentName = Comp.BusinessUnitName})
                Next
            End If

C#

   object obj = srv.GetData(criteria);
          if (obj != null)
          {
    foreach (ComponentItem comp in (List<ComponentItem>)((Result)obj("ComponentInformation")).Output)
                  {
                      lstComp.Add(new Component
                      {
                          ComponentId = comp.BusinessUnitID,
                          ComponentName = comp.BusinessUnitName
                      });
                  }
}

after converting the code i got an error obj' is a 'variable' but is used like a 'method' How to reslove this error?

Upvotes: 0

Views: 607

Answers (3)

Dennis
Dennis

Reputation: 37760

C#, prior to v 4.0, where dynamics were introduced, doesn't support late binding, like VB does:

_obj("ComponentInformation")

So, you can't just write something like this for variable of object type:

_obj["ComponentInformation"]

in C# without dynamic or reflection API (e.g., if you working with COM object).

You either have to declare variable of appropriate type (which has indexer), or use dynamic, or use reflection API.

Upvotes: 0

Habib
Habib

Reputation: 223187

obj is probably an array, in C# you have to access its members via square brackets []. So it should be:

obj["ComponentInformation"]

EDIT: (courtesy @Groo)

You have to change your line:

object obj = srv.GetData(criteria);

Instead of object you should specify the type which is being returned by the method. Or you can use var to have an implicitly typed variable. 

var obj = srv.GetData(criteria);

Upvotes: 4

Dave Bish
Dave Bish

Reputation: 19636

Change object to var:

var obj = srv.GetData(criteria);

And ...

For Each Comp As ComponentItem In DirectCast(DirectCast(_obj["ComponentInformation"], Result).Output, List(Of ComponentItem))

Upvotes: 1

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