You are currently browsing legacy 4.1 version of documentation. Click here to switch to the newest 6.2 version.
    We can help you with migration to the latest RavenDB
    Contact Us Now
    See on GitHub

    Session: How to Check if an Attachment Exists

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

    • This does not load the document or the attachment from the server, and it does not cause the session to track the document.

    • In this page:

    Syntax 

    bool Exists(string documentId, string name);
    Task<bool> ExistsAsync(string documentId, string name, CancellationToken token = default);
    Parameter Type Description
    documentId string The ID of the document you want to check for the attachment
    name string The name of the attachment you want to check the document for
    Return Value Description
    bool Indicates whether the document has an attachment with the specified name

    Example 

    bool exists = session
                .Advanced
                .Attachments
                .Exists("categories/1-A","image.jpg");

if (exists)
{
    //do something
}
    bool exists = await asyncSession
                        .Advanced
                        .Attachments
                        .ExistsAsync("categories/1-A", "image.jpg");

if (exists)
{
    //do something
}

    related articlesRelated Articles

    Session

    Home / Docs / Client Api / Session / How To / Check If Attachment Exists