Subdocument
Sub document can be coming from external file or a range (coming from different section with the same document). Microsoft Word VBA (Visual Basic for Applications) Subdocuments object which exposes all available Subdocuments within a document as collection.
AddFromFile
Following is the file which I saved as “example.docx” and will insert into current document using code:

Note: to perform AddFromFile method the current document must be in Outline Mode as shown below else code will throw error.
- Click on View tab
- Locate Outline button under Views group as shown below to activate Outline view

Upon activating the Outline View the document view turns as shown below:

Code example
Public Sub InsertSubDocument() 'Declare document object Dim oDocument As Document 'Bind active document Set oDocument = ActiveDocument 'set expanded property to true oDocument.Subdocuments.Expanded = True 'Move selectio to the end of the document Selection.EndKey Unit:=wdStory 'Insert a new paragraph Selection.InsertParagraphBefore 'make sure you are in outline view ActiveWindow.ActivePane.View.Type = wdOutlineView 'Insert file oDocument.Subdocuments.AddFromFile Name:="C:\Users\nawazish\Downloads\example.docx" 'Memory Cleanup Set oDocument = Nothing End Sub
Output

AddFromRange
We will use same document where we inserted table from “example.docx” file. Now we will use another method which will add selection to end of the document.
Note: AddFromRange needs Heading 1 to be inserted hence we will use code to do the same.
Code example
Public Sub AddFromRangeDocument() 'Declare document object Dim oDocument As Document 'Bind active document Set oDocument = ActiveDocument 'Declare range object Dim oRange As Range 'Bind range object to selection Set oRange = Selection.Range 'Make selection to heading 1 oRange.Style = wdStyleHeading1 'set expanded property to true oDocument.Subdocuments.Expanded = True 'Move selectio to the end of the document Selection.EndKey Unit:=wdStory 'Insert a new paragraph Selection.InsertParagraphBefore 'Insert file oDocument.Subdocuments.AddFromRange oRange 'Memory Cleanup Set oRange = Nothing Set oDocument = Nothing End Sub
Output

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