Beginning ASP.NET 4.5 in CSharp and VB Opsylum

Hand-Coding Data Access Code x 587
C#
if (!string.IsNullOrEmpty(Request.QueryString.Get("Id")))
{
_id = Convert.ToInt32(Request.QueryString.Get("Id"));
}
Because this _id variable is assigned a value in Page_Load, it can be used to load an existing item
to display in the form, but also to get the item from the database in the SaveButton’s Click event
(which you saw earlier).
If there is an ID ( _id is assigned a value other than -1) and the page is not posted back, the
code sets up a new PlanetWroxEntities instance inside a using block and queries the Review
instance using the following LINQ to Entities query:
VB.NET
Dim review = (From r In myEntities.Reviews
Where r.Id = _id
Select r).SingleOrDefault()
C#
var review = (from r in myEntities.Reviews
where r.Id == _id
select r).SingleOrDefault();
Once the Review instance is found in the database, its properties are used to prepopulate the form
controls:
VB.NET
If review IsNot Nothing Then
TitleText.Text = review.Title
SummaryText.Text = review.Summary
BodyText.Text = review.Body
GenreList.DataBind()
Dim myItem As ListItem = GenreList.Items.FindByValue(review.GenreId.ToString())
If myItem IsNot Nothing Then
myItem.Selected = True
End If
Authorized.Checked = review.Authorized
End If
C#
if (review != null)
{
TitleText.Text = review.Title;
SummaryText.Text = review.Summary;
BodyText.Text = review.Body;
GenreList.DataBind();
ListItem myItem = GenreList.Items.FindByValue(review.GenreId.ToString());
if (myItem != null)
{
myItem.Selected = true;
}
Authorized.Checked = review.Authorized;
}