Find and Replace text in Microsoft Word via MS Visual Studio

Does anyone know if it is possible to find and replace text in Microsoft Word via MS Visual Studio? This would be useful for engineering changes.

I originally wanted to do a find and replace text with PDF files, but wasn't sure if it would be possible to; hence converted them to word. If anyone knows how to do a find and replace text with PDF files that would be great.

Thanks!
jeremyllAsked:
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GrahamSkanConnect With a Mentor RetiredCommented:
If you put them all in one folder, you could run this code
        Dim wdApp As New Microsoft.Office.Interop.Word.Application
        Dim wdDoc As Microsoft.Office.Interop.Word.Document
        Dim wdRange As Microsoft.Office.Interop.Word.Range
        Dim strFiles() As String
        Dim f As Integer
        Dim ex As Exception
        Try
            strFiles = IO.Directory.GetFiles("c:\myfolder", "*.doc*")
            For f = 0 To UBound(strFiles)
                wdApp.Visible = True
                wdDoc = wdApp.Documents.Open(strFiles(f))
                wdRange = wdDoc.Range
                With wdRange.Find
                    .Text = "old text"
                    .Replacement.Text = "new text"
                    .Wrap = Microsoft.Office.Interop.Word.WdFindWrap.wdFindContinue
                    If .Execute(Replace:=Microsoft.Office.Interop.Word.WdReplace.wdReplaceAll) Then
                        MsgBox("Saving File" & strFiles(f))
                        wdApp.Documents.Item(1).Save()
                    Else
                        MsgBox("No changes to " & strFiles(f))
                    End If
                End With
                wdApp.Documents.Item(1).Close()
            Next f
        Catch ex 'As Exception
            MsgBox(ex.Message)
        End Try

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GrahamSkanRetiredCommented:
This works in VB 2008 express
        Dim wdApp As New Microsoft.Office.Interop.Word.Application
        Dim wdDoc As Microsoft.Office.Interop.Word.Document
        'Dim wdRange As Microsoft.Office.Interop.Word.Range
        Try
            wdApp.Visible = True
            wdDoc = wdApp.Documents.Open("c:\myfolder\test.doc")

            With wdDoc.Range.Find
                .Text = "old text"
                .Replacement.Text = "new text"
                .Wrap = Microsoft.Office.Interop.Word.WdFindWrap.wdFindContinue
                .Execute(Replace:=Microsoft.Office.Interop.Word.WdReplace.wdReplaceAll)
            End With
            MsgBox("Saving File")
            wdApp.Documents.Item(1).Save()
            wdApp.Documents.Item(1).Close()
        Catch ex As Exception
            MsgBox(ex.Message)
        End Try

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jeremyllAuthor Commented:
Sorry guys, I realised I didn't make myself entirely clear.

I would like a way to do a find and replace text for multiple files. I've got about 500 word documents!

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jeremyllAuthor Commented:
Thanks!
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