(VB.NET) Get a Structure Property Value from XMP

Demonstrates how to open a JPG or TIF image file, access the XMP metadata, and fetch the value of a structure property, such as the Iptc4xmpCore:CiTelWork (found within the Iptc4xmpCore:CreatorContactInfo structure).

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

' This requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim xmp As New Chilkat.Xmp

' Load a JPG or TIF image file.
' Sample JPG's with XMP metadata may be found at:
' http://www.chilkatsoft.com/testData/xmp/sample1.jpg
' http://www.chilkatsoft.com/testData/xmp/sample2.jpg
' http://www.chilkatsoft.com/testData/xmp/sample3.jpg
Dim success As Boolean = xmp.LoadAppFile("sample1.jpg")
If (success <> True) Then
    Debug.WriteLine(xmp.LastErrorText)
    Exit Sub
End If


Debug.WriteLine("Num embedded XMP docs: " & xmp.NumEmbedded)

' Assuming there is at least one, get the 1st.
' (There is typically never more than one, but theoretically it's possible.)
Dim xml As Chilkat.Xml = xmp.GetEmbedded(0)
If (xmp.LastMethodSuccess = True) Then

    Dim propVal As String = xmp.GetStructValue(xml,"Iptc4xmpCore:CreatorContactInfo","Iptc4xmpCore:CiTelWork")
    If (xmp.LastMethodSuccess <> True) Then
        Debug.WriteLine("Not found.")
    Else
        Debug.WriteLine(propVal)
    End If




Else
    Debug.WriteLine(xmp.LastErrorText)
End If