'对自定义属性进行读取
Dim Properties = SourceDoc.CustomDocumentProperties
Dim PropertyType As Type = Properties.GetType
Try
Dim Authorprop = PropertyType.InvokeMember("Item", Reflection.BindingFlags.Default Or Reflection.BindingFlags.GetProperty, Nothing, Properties, New Object() {"备注"})
ResultString = Authorprop.GetType.InvokeMember("Value", Reflection.BindingFlags.Default Or Reflection.BindingFlags.GetProperty, Nothing, Authorprop, New Object() {})
Catch ex As Exception
End Try
'写入
Dim Authorprop = PropertyType.InvokeMember("Item", Reflection.BindingFlags.Default Or Reflection.BindingFlags.SetProperty, Nothing, properties, New Object() {"备注", ResultString})
'增加新属性
SourceDoc.CustomDocumentProperties.Add(Name := "PropertyName", LinkToContent := False, Type := Microsoft.Office.Core.MsoDocProperties.msoPropertyTypeString, Value := "PropertyValue")
'修改属性
SourceDoc.CustomDocumentProperties("PropertyName").Value = PropertyValue
'获取属性值
PropertyValue =SourceDoc.CustomDocumentProperties("PropertyName").Value