How to Check if an Attachment Exists

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

• Calling 'Exists' does not Load the document or the attachment to the session,
  and the session will not track them.

• In this page:

  • Check if attachment exists
  • Syntax

Check if attachment exists

• Sync
• Async

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

if (exists)
{
  // attachment 'image.jpg' exists on document 'categories/1-A'
}

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

if (exists)
{
  // attachment 'image.jpg' exists on document 'categories/1-A'
}

Syntax

• Sync
• Async

bool Exists(string documentId, string attachmentName);

Task<bool> ExistsAsync(string documentId, string attachmentName, CancellationToken token = default);

Parameter	Type	Description
documentId	string	The ID of the document you want to check
attachmentName	string	The name of the attachment you are looking for

Return Value	Description
bool	true - The specified attachment exists on the document false - The attachment does not exist on the document