converting anonymous types to list in C#

Question

I am trying to convert anonymous types to list but i am getting invocation errors like below.

An unhandled exception of type 'System.Reflection.TargetInvocationException' occurred in mscorlib.dll

var all = from a in Fcticuclist
          join b in crlist on a.Ref_CID equals b.C_ID
          select new { b.MU_Identifier, a.Status,a.ID };

foreach (var item in all)
{
    castapprove.Add(new muapprovelist { Id = item.ID, MU_Identifier = item.MU_Identifier, Status = item.Status });
}

so here "all" is anonymous type and castapprove is a list and muapprovelist is a class and they are declared in the same view model. Any pointers where i am doing it wrong ?

Answer 1

Presumably this is some accessibility issue relating to dynamic compilation of a view of some kind and the anonymous type (which is internal). Perhaps a pragmatic solution is to not use the anonymous type in this case:

var all = from a in Fcticuclist
      join b in crlist on a.Ref_CID equals b.C_ID
      select new muapprovelist {
          Id = a.ID, MU_Identifier = b.MU_Identifier,
          Status = a.Status };

foreach (var item in all)
{
    castapprove.Add(item);
}

Perhaps even:

var castapprove = (from a in Fcticuclist
      join b in crlist on a.Ref_CID equals b.C_ID
      select new muapprovelist {
          Id = a.ID, MU_Identifier = b.MU_Identifier,
          Status = a.Status }).ToList();

Alternatively: move this code away from the view area into code that is part of the main pre-compiled assembly.