i want to use an List to store the title, path,... from Documents.
I declared the list like this: Dim MyDocuments As New List(Of Document)
But i don't really know how to handle the list. i want to use the list instead of an ReDim Array.
For i = 0 To results - 1 Step 1 ' forschleife zum durchlaufen der Ergebnisse
Try
MyDocuments.Add(New Document())
array_results(i, 0) = hits.Doc(i).Get("title")
array_results(i, 0) += hits.Doc(i).Get("doc_typ")
array_results(i, 1) = hits.Doc(i).Get("pfad")
'array_results(i, 2) = hits.Doc(i).Get("date_of_create") '
array_results(i, 2) = hits.Doc(i).Get("last_change")
array_results(i, 3) = CStr(hits.Score(i))
array_results(i, 4) = hits.Doc(i).Get("doc_typ")
Can I store the object Document, or do i have to create an own class?? Is there a good tutorial for using the list? (i searched, but didn't found something good) Is the List of (T) the right data structure?
but how can i do like mylist(i) ->gettitle() or something like this?
thanks in advance!
Yes, you can store your documents in a generic List. Deciding if a List<T>
is the right data structure or not depends on what you want to do with it. Maybe if you provide more information someone could come up with a better example. I don't know VB.NET so i'll do it in C#.
// i assume you're using the Document class of Lucene.NET
List<Document> documents = new List<Document>();
// add the documents to your collection
for (i = 0; i < hits.Length(); i++)
{
// each result in the list contains a Document
// which you can add to your list
documents.Add(hits.Doc(i));
}
// you can search the list for a Document following a specific rule, using lambda expressions
Document myDoc = documents.Find(d => d.Get("title") == "a value");
// you can get a document by a specific index
Document myOtherDoc = documents[0];
// you can search the list for multiple Documents following a specific rule, using lambda expressions
List<Document> myDocs = documents.FindAll(d => d.Get("doc_typ") == "a type");
More information about the List<T>
can be found here: http://msdn.microsoft.com/en-us/library/6sh2ey19.aspx
More information on lambda expressions can be found here: http://msdn.microsoft.com/en-us/library/bb397687.aspx
This article on SO shows how to use lambdas to search a List<T>
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