How to open a .txt file?

[fernandomiletto]

I wrote this code to open a PDF file:
using var fileStream = new FileStream(PdfPath, FileMode.Open, FileAccess.Read);
IReadOnlyCollection documents = await PdfPigPdfSource.FromStreamAsync(fileStream, token);

How can I open a txt file with the format IReadOnlyCollection?

[HavenDV]

var vectorCollection = await vectorDatabase.AddDocumentsFromAsync<FileLoader>(
            embeddingModel, // Used to convert text to embeddings
            dimensions: 1536, // Should be 1536 for TextEmbeddingV3SmallModel
            dataSource: DataSource.FromPath(PdfPath),

or

var loader = new FileLoader();
var documents = loader.Load(DataSource.FromPath(PdfPath));