What does it mean to update data in the database? We want to replace one or more column values in a table's row with new values. Entity Framework will issue an update query when it knows that an entity has changed since it was first attached to
DbContext, either by viewing a LINQ query that was enumerated, or via a call to
Attach method of
DbSet. The simplest way to find an entity you want to update is to use a query. Then, change one or more properties to new values and call
SaveChanges. From the moment we query the data, Entity Framework will start tracking changes to each property. When
SaveChanges is finally called, only changed properties will be included in the update SQL operation. When you want to find an ...