ExtractMetadataFromDocument_new.cs

Regex pattern = new Regex("author|company", RegexOptions.IgnoreCase);
 
using (Metadata metadata = new Metadata(@"D:\input.docx"))
{
    // This method searches for properties across all metadata packages and works with all supported formats
    var properties = metadata.FindProperties(p => pattern.IsMatch(p.Name) || pattern.IsMatch(p.Value.ToString()));
 
    foreach (var property in properties)
    {
        Console.WriteLine("{0} = {1}", property.Name, property.Value);
    }
}

ExtractMetadataFromDocument_old.cs

Regex pattern = new Regex("author|company", RegexOptions.IgnoreCase);
 
// This method works with document formats only
MetadataPropertyCollection properties = SearchFacade.ScanDocument(@"D:\input.docx", pattern);
for (int i = 0; i < properties.Count; i++)
{
    Console.WriteLine(properties[i]);
}

ReplaceMetadata_new.cs

var pattern = new Regex("^author|company$", RegexOptions.IgnoreCase);
var replaceValue = new PropertyValue("Aspose");
 
using (Metadata metadata = new Metadata(@"D:\input.docx"))
{
    // This method updates writable properties across all metadata packages and works with all supported formats
    metadata.UpdateProperties(p => pattern.IsMatch(p.Name), replaceValue);
 
    metadata.Save(@"D:\output.docx");
}

ReplaceMetadata_old.cs

Regex pattern = new Regex("^author|company$", RegexOptions.IgnoreCase);
string replaceValue = "Aspose";
 
// This method works with document formats only
SearchFacade.ReplaceInDocument(@"D:\input.docx", pattern, replaceValue, @"D:\output.docx");