Session: 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.

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

• In this page:

  • Syntax
  • Example

Syntax

• Sync
• Async

bool Exists(string id);

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

Parameter	Type	Description
id	string	The ID of the document you want to check the database for

Return Value	Description
bool	Indicates whether a document with the specified ID exists in the database

Example

• Sync
• Async

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

if (exists)
{
  //do something
}

bool exists = await asyncSession.Advanced.ExistsAsync("employees/1-A");

if (exists)
{
  //do something
}