This could be a problem if you have say a million rows to update.
Save Changes() Northwind Entities db Context = new Northwind Entities(); var query = from p in db Context.
Contains( "Test" ) select p; foreach ( Product p in query ) db Context. Save Changes(); Dim db Context As New Northwind Entities() Dim query = From p In db Context.
Submit Changes() End Sub Sub Insert Record(sender As Object, e As Grid Record Event Args) Dim db As New Northwind Data Context() Dim c As New Customer() With db.
This tutorial uses the Northwind database, which can be downloaded from here. Then, it shows how to create two new Products and associate them with the Category. Category Name = "Test Category" Dim first Product As New Product() first Product.
Objects attached to the object context are managed by that object context. Observe the code shown below: All we are doing here is create a new instance of the Customer type and populate its properties.
Now there are three ways to add a new object to the object context: 1. We then add this instance to the Customers set using the Entity Set. The Add Object() method is used for adding newly created objects that do not exist in the database.Category Name = "Test Category"; Product first Product = new Product(); first Product. Product Name = "Test Product 1"; Product second Product = new Product(); second Product. If you have X rows, you're going to issue X update statements to the database behind the scenes.You're also going to be loading up all those records in the first place.C# void Delete Record(object sender, Grid Record Event Args e) void Update Record(object sender, Grid Record Event Args e) void Insert Record(object sender, Grid Record Event Args e) void Rebind Grid(object sender, Event Args e) Sub Delete Record(sender As Object, e As Grid Record Event Args) Dim db As New Northwind Data Context() Dim cust = (From c In db.