An Enum instance can be created by parsing a string representation of the Enum.
Module Module1
Enum Size
Small
Medium
Large
End Enum
Sub Main()
Dim shirtSize As Size = DirectCast([Enum].Parse(GetType(Size), "Medium"), Size)
' Prints 'Medium'
Console.WriteLine(shirtSize.ToString())
' Waits until user presses any key
Console.ReadKey()
End Sub
End Module
See also: Parse a string to an Enum value in VB.NET