see on GitHub

    How to Check if a Document Exists

    • To check whether the database contains a certain document,
      use the method Exists() from the Advanced session operations.

    • Calling 'Exists' does not Load the document entity to the session,
      and the session will not track it.

    • In this page:

    Check if document exists 

    bool exists = session.Advanced.Exists("employees/1-A");

if (exists)
{
    // document 'employees/1-A exists
}
    bool exists = await asyncSession.Advanced.ExistsAsync("employees/1-A");

if (exists)
{
    // document 'employees/1-A exists
}

    Syntax 

    bool Exists(string id);
    Task<bool> ExistsAsync(string documentId, CancellationToken token = default);
    Parameter Type Description
    id string The ID of the document to check
    Return Value Description
    bool true - the document exists in the database.
    false - The document does Not exist in the database

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