The Destroy method unloads the hosting control. The Create(assemblyLocation, assemblyName) method loads the specified file, and creates the giving type.

If Destroy method is called, the 

• IsCreated property returns NAVHostType_exNAVHostNothing, which indicates no object has been created
• AssemblyLocation, AssemblyName and  AssemblyQualifiedName return empty string
• Host property returns nothing.

There are three ways of loading/creating a manifest/component/assembly as listed:

• AssemblyLocation property, loads the first public, browseable control found in the specified location. If there are more public, browseable controls in the assembly, you can use the AssemblyName or AssemblyQualifiedName property to specify the fully qualified name of the type to be hosted.
• AssemblyQualifiedName property, loads and creates the object based on the assembly-qualified name of the type, which includes the name of the assembly from which this type object was loaded. Sample: "System.Windows.Forms.ListView, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
• Create(assemblyLocation, assemblyName) method loads the specified file, and creates the giving type.