usmanazizgroupdocs
2/1/2016 - 8:00 AM
CleanAttachmentFunction.cs
//For complete examples and data files, please go to https://github.com/groupdocsmetadata/GroupDocs_Metadata_NET
public static string CleanAttachment(string filePath)
{
try
{
//Recognize format of file...
FormatBase format = FormatFactory.RecognizeFormat(filePath);
if (format.Type.ToString().ToLower() == "doc" || format.Type.ToString().ToLower() == "docx")
{
// initialize DocFormat...
DocFormat docFormat = format as DocFormat;
if (docFormat != null)
{
// get document properties...
DocMetadata properties = new DocMetadata();
properties = docFormat.DocumentProperties;
//Remove custom properties...
foreach (KeyValuePair<string, PropertyValue> keyValuePair in properties)
{
if (!properties.IsBuiltIn(keyValuePair.Key))
{
properties.Remove(keyValuePair.Key);
}
}
//Reset built-in properties...
properties.Author = "";
properties.Category = "";
properties.Comments = "";
properties.Company = "";
properties.ContentStatus = "";
properties.HyperlinkBase = "";
properties.Keywords = "";
properties.Manager = "";
properties.Title = "";
//Update metadata if file...
MetadataUtility.UpdateMetadata(filePath, properties);
}
return "1";
}
else if (format.Type.ToString().ToLower() == "xls" || format.Type.ToString().ToLower() == "xlsx")
{
//Initialize XlsFormat...
XlsFormat xlsFormat = format as XlsFormat;
if (xlsFormat != null)
{
//Get document properties...
XlsMetadata properties = xlsFormat.DocumentProperties;
//Remove custom properties...
foreach (KeyValuePair<string, PropertyValue> keyValuePair in properties)
{
if (!properties.IsBuiltIn(keyValuePair.Key))
{
properties.Remove(keyValuePair.Key);
}
}
//Reset built-in properties...
properties.Author = "";
properties.Category = "";
properties.Comments = "";
properties.Company = "";
properties.HyperlinkBase = "";
properties.Keywords = "";
properties.Manager = "";
properties.Title = "";
properties.Subject = "";
//Update metadata in files...
MetadataUtility.UpdateMetadata(filePath, properties);
}
return "1";
}
else if (format.Type.ToString().ToLower() == "ppt" || format.Type.ToString().ToLower() == "pptx")
{
//Initialize PptFormat...
PptFormat pptFormat = format as PptFormat;
if (pptFormat != null)
{
//Get document properties...
PptMetadata properties = pptFormat.DocumentProperties;
//Remove custom properties
foreach (KeyValuePair<string, PropertyValue> keyValuePair in properties)
{
if (!properties.IsBuiltIn(keyValuePair.Key))
{
properties.Remove(keyValuePair.Key);
}
}
//Reset built-in properties...
properties.Author = "";
properties.Category = "";
properties.Comments = "";
properties.Company = "";
properties.Keywords = "";
properties.Manager = "";
properties.Title = "";
properties.Subject = "";
//Update metadata of file...
MetadataUtility.UpdateMetadata(filePath, properties);
}
return "1";
}
else if (format.Type.ToString().ToLower() == "pdf")
{
// initialize PdfFormat...
PdfFormat pdfFormat = format as PdfFormat;
if (pdfFormat != null)
{
// get document properties...
PdfMetadata properties = pdfFormat.DocumentProperties;
// Remove custom properties...
foreach (KeyValuePair<string, PropertyValue> keyValuePair in properties)
{
if (!properties.IsBuiltIn(keyValuePair.Key))
{
properties.Remove(keyValuePair.Key);
}
}
//Reset built-in properties...
properties.Author = "";
properties.CreatedDate = DateTime.MinValue;
properties.Keywords = "";
properties.ModifiedDate = DateTime.MinValue;
properties.Subject = "";
properties.TrappedFlag = false;
properties.Title = "";
//Update metadata of file...
MetadataUtility.UpdateMetadata(filePath, properties);
}
return "1";
}
else if (format.Type.ToString().ToLower() == "jpeg" || format.Type.ToString().ToLower() == "jpg")
{
//Get EXIF data if exists
ExifMetadata exifMetadata = (ExifMetadata)MetadataUtility.ExtractSpecificMetadata(filePath, MetadataType.EXIF);
//Get XMP data if exists
XmpMetadata xmpMetadata = (XmpMetadata)MetadataUtility.ExtractSpecificMetadata(filePath, MetadataType.XMP);
if (exifMetadata != null)
{
//Remove exif info...
ExifInfo exifInfo = exifMetadata.Data;
if (exifInfo.GPSData != null)
{
// set altitude, latitude and longitude to null values
exifInfo.GPSData.Altitude = null;
exifInfo.GPSData.Latitude = null;
exifInfo.GPSData.LatitudeRef = null;
exifInfo.GPSData.Longitude = null;
exifInfo.GPSData.LongitudeRef = null;
}
exifInfo.BodySerialNumber = "";
exifInfo.CameraOwnerName = "";
exifInfo.CFAPattern = new byte[] { 0 };
}
else
{
exifMetadata = new ExifMetadata();
}
try
{
//Remove XMP data...
XmpPacketWrapper xmpPacket = xmpMetadata.XmpPacket;
if (xmpPacket != null)
{
if (xmpPacket.ContainsPackage(Namespaces.DublinCore))
{
// if not - add DublinCore schema
xmpPacket.AddPackage(new DublinCorePackage());
DublinCorePackage dublinCorePackage = (DublinCorePackage)xmpPacket.GetPackage(Namespaces.DublinCore);
dublinCorePackage.Clear();
xmpMetadata.XmpPacket = xmpPacket;
}
}
}
catch { }
//Update Exif info...
try
{
MetadataUtility.UpdateMetadata(filePath, exifMetadata);
}
catch { }
//Update XMP data...
try
{
MetadataUtility.UpdateMetadata(filePath, xmpMetadata);
}
catch { }
//Remove custom metadata if any...
MetadataUtility.CleanMetadata(filePath);
return "1";
}
else if (format.Type.ToString().ToLower() == "png")
{
//Get XMP data...
XmpMetadata xmpMetadata = (XmpMetadata)MetadataUtility.ExtractSpecificMetadata(filePath, MetadataType.XMP);
try
{
//Remove XMP metadata...
XmpPacketWrapper xmpPacket = xmpMetadata.XmpPacket;
if (xmpPacket != null)
{
if (xmpPacket.ContainsPackage(Namespaces.DublinCore))
{
// if not - add DublinCore schema
xmpPacket.AddPackage(new DublinCorePackage());
DublinCorePackage dublinCorePackage = (DublinCorePackage)xmpPacket.GetPackage(Namespaces.DublinCore);
dublinCorePackage.Clear();
xmpMetadata.XmpPacket = xmpPacket;
//Update XMP metadata in file...
MetadataUtility.UpdateMetadata(filePath, xmpMetadata);
//Clean custom metadata if any...
MetadataUtility.CleanMetadata(filePath);
}
}
}
catch { }
return "1";
}
else if (format.Type.ToString().ToLower() == "gif")
{
//Initialie GifFormat...
GifFormat gifFormat = new GifFormat(filePath);
//Check if Xmp supported...
if (gifFormat.IsSupportedXmp)
{
//Get XMP data...
XmpMetadata xmpMetadata = (XmpMetadata)MetadataUtility.ExtractSpecificMetadata(filePath, MetadataType.XMP);
try
{
XmpPacketWrapper xmpPacket = xmpMetadata.XmpPacket;
if (xmpPacket != null)
{
if (xmpPacket.ContainsPackage(Namespaces.DublinCore))
{
// if not - add DublinCore schema
xmpPacket.AddPackage(new DublinCorePackage());
DublinCorePackage dublinCorePackage = (DublinCorePackage)xmpPacket.GetPackage(Namespaces.DublinCore);
dublinCorePackage.Clear();
xmpMetadata.XmpPacket = xmpPacket;
//Update Xmp data in file...
MetadataUtility.UpdateMetadata(filePath, xmpMetadata);
//Clean custom metadata if any...
MetadataUtility.CleanMetadata(filePath);
}
}
}
catch { }
}
return "1";
}
else
{
return "Format not supported.";
}
}
catch( Exception exp)
{
MessageBox.Show("Exception: " + exp.Message);
return exp.Message;
}
}