Option Strict On disallows late binding

Problem

When setting Option Strict On in Visual Studio macro, the following code examples:

Dim toolbar As Microsoft.VisualStudio.CommandBars.CommandBar
toolbar = DTE.CommandBars.Item("MyToolbarName")
DTE.ActiveDocument.Selection.NewLine()

Causes the error:

Option Strict On disallows late binding.

Solution

Use CType Function to explicitly convert an expression to a specified object like the following examples:

toolbar = CType(DTE.Commands.Item("MyToolbarName"), Microsoft.VisualStudio.CommandBars.CommandBar)
Dim activeDocument As Document = CType(DTE.ActiveDocument, Document)
Dim activeSelection As TextSelection = CType(DTE.ActiveDocument.Selection, TextSelection)