Count Read Messages in a Folder using the WellKnownFolderName

In order to use this code you will need to get the GetBinding() method


/// <summary>
/// Obters the mensages lidas pasta.
/// </summary>
/// <param name="folder">The folder.</param>
/// <param name="pageSize">Size of the page.</param>
/// <returns></returns>
public static int ObterMensagesLidasPasta(WellKnownFolderName folder, int pageSize)
    ItemView view = new ItemView(pageSize, 0);
    SearchFilter sf = new SearchFilter.IsEqualTo(EmailMessageSchema.IsRead, true);

    FindItemsResults<Item> findResults = GetBinding().FindItems(folder, sf, view);
    return findResults.Items.Count;

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