Delete indexed documents Leave feedback
GroupDocs.Search has the ability to remove individual documents from the index that are indexed from a stream or structure. To remove documents indexed by a file system path, see Deleting indexed paths.
The following example shows how to remove documents from an index by document key.
C#
// Implementing document loader
public class DocumentLoader : IDocumentLoader
{
private readonly string filePath;
private readonly string documentKey;
public DocumentLoader(string filePath)
{
this.filePath = filePath;
documentKey = Path.GetFileName(filePath);
}
public string DocumentKey
{
get { return documentKey; }
}
public void CloseDocument()
{
}
public Document LoadDocument()
{
string extension = Path.GetExtension(filePath);
byte[] buffer = File.ReadAllBytes(filePath);
Stream stream = new MemoryStream(buffer);
Document document = Document.CreateFromStream(documentKey, DateTime.Now, extension, stream);
return document;
}
}
...
string filePath = @"c:\MyDocuments\SomeDocument.pdf";
string indexFolder = @"c:\MyIndex\";
// Creating an index in the specified folder
Index index = new Index(indexFolder);
// Indexing the document from stream
DocumentLoader documentLoader = new DocumentLoader(filePath);
Document document = Document.CreateLazy(DocumentSourceKind.Stream, documentLoader.DocumentKey, documentLoader);
Document[] documents = new Document[] { document };
index.Add(documents, new IndexingOptions());
// Searching in the index
SearchResult searchResult = index.Search("Einstein");
// Deleting indexed document from the index
string[] documentKeys = new string[] { documentLoader.DocumentKey };
DeleteResult deleteResult = index.Delete(new UpdateOptions(), documentKeys);
You may easily run the code from documentation articles and see the features in action in our GitHub examples:
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