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// For complete examples and data files, please go to https://github.com/groupdocsmetadata/GroupDocs_Metadata_NET
// initialize DocFormat
DocFormat docFormat = new DocFormat(Common.MapSourceFilePath(filePath));
 
// inspect document
InspectionResult inspectionResult = docFormat.InspectDocument();

// if merge fields are presented
if (inspectionResult.Fields.Length > 0)
{
    // remove it
    docFormat.RemoveHiddenData(new DocInspectionOptions(DocInspectorOptionsEnum.Fields));

    // save file in destination folder
    docFormat.Save(Common.MapDestinationFilePath(filePath));
}