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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for October 25th, 2012

One or more types required to compile a dynamic expression cannot be found. Are you missing references to Microsoft.CSharp.dll and System.Core.dll (via: C# 4.0 and .Net 3.5 – Stack Overflow)

Posted by jpluimers on 2012/10/25

If you get any of the two errors below while compiling your .NET app, then one of these things happened:

  1. You moved .NET 4 or higher code that makes use of dynamic into an assembly that does not reference the Microsoft.CSharp.dll and System.Core.dll assemblies.
  2. You tried changing the .NET version of a project back to .NET 3.5 or lower.

Note that it is not so much declaring a variable as dynamic, but using that variable.

Predefined type ‘Microsoft.CSharp.RuntimeBinder.Binder’ is not defined or imported

One or more types required to compile a dynamic expression cannot be found. Are you missing references to Microsoft.CSharp.dll and System.Core.dll?

–jeroen

via C# 4.0 and .Net 3.5 – Stack Overflow.

Posted in .NET, .NET 4.5, C#, C# 2.0, C# 3.0, C# 4.0, C# 5.0, Development, Software Development | Leave a Comment »

 
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