Skip to Navigation
Session: Updating Entities
Update an entity by retrieving it, editing its properties, and applying your changes using SaveChanges().
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.
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.
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();
}
Related Articles