... line:using System .Windows. Forms; 7. Because MessageBox is supported by System .Windows. Forms, which is not an assembly automatically referenced by Visual Studio when you create a sequential workflow project, ... sequential workflow library project as you did in Chapter 3, Workflow Instances,” in the “Adding a sequen-tial workflow project to the WorkflowHost solution” procedure. Name this workflow library ... local file. byte[] buffer = new byte[1024]; Int32 bytesRead = 0; while ((bytesRead = bitStream.Read(buffer, 0, buffer.Length)) > 0) { fileStream.Write(buffer, 0, bytesRead); ...