Session: Updating Entities

Update an entity by retrieving it, editing its properties, and applying your changes using SaveChanges().

• Update

Update

• Retrieve the entity you wish to update, using a load method or a query.
• Edit the properties you wish to change.
• Call SaveChanges() to apply the update.

Example I

In this example we load a company profile and change its type property to private.

• Sync
• Async

using (var session = store.OpenSession())
{
  // Load a document
  Company company = session.Load<Company>("companies/KitchenAppliances");

  // Update the company's type
  company.Type = Company.CompanyType.Private;

  // Apply changes
  session.SaveChanges();
}

using (var asyncSession = store.OpenAsyncSession())
{
  // Load a document
  Company company = await asyncSession.LoadAsync<Company>("companies/KitchenAppliances");

  // Update the company's type
  company.Type = Company.CompanyType.Private;

  // Apply changes
  await asyncSession.SaveChangesAsync();
}

Example II

Here we run a query to find companies whose type is public, and change the type of matching companies to private.

• Sync
• Async

using (var session = store.OpenSession())
{
  // Query: find public companies
  IRavenQueryable<Company> query = session.Query<Company>()
      .Where(c => c.Type == Company.CompanyType.Public);

  var result = query.ToList();

  // Change company type from public to private
  for (var l = 0; l < result.Count; l++)
  {
      result[l].Type = Company.CompanyType.Private;
  }

  // Apply changes
  session.SaveChanges();
}

using (var asyncSession = store.OpenAsyncSession())
{
  // Query: find public companies
  IRavenQueryable<Company> query = asyncSession.Query<Company>()
      .Where(c => c.Type == Company.CompanyType.Public);

  var result = await query.ToListAsync();

  // Change company type from public to private
  for (var l = 0; l < result.Count; l++)
  {
      result[l].Type = Company.CompanyType.Private;
  }

  // Apply changes
  await asyncSession.SaveChangesAsync();
}