Question

I have a Database with a Table named Fruits. In the table I have 3 columns: Name, Date, Remove.

Now i have inserted 3 rows, with a value like

Apple----20/10/12----N
Mango----21/12/12----Y
Banana--- 15/07/12----N
Grapes----18/12/12----Y

I want to delete the 2 rows which is marked as ‘Y.

This I want to achive using Linq in c# code. Initally I am establishing a connection to the DB using a connection string. I will get the device context DC, and with this I will copy all the rows.

Now I will enumerate the rows marked as N and I will call remove.

Once I do remov, I will do: dc.deleteonSubmit<tableName>(var).

After this, I should call dc.submittsavechages(); or what to make DB look like:

Mango----21/12/12----Y
Grapes----18/12/12----Y

If I query in sql query analyzer i should get above result. How to do this in LINQ?

Answer 1

Try this:

Dim dc as new DataClassesDataContext()

Dim deleteFruits = _
    From f In db.Fruits() _
    Where f.Remove _
    Select f

For Each fruit In deleteFruits
    db.Fruits.DeleteOnSubmit(fruit)
Next

Try
    db.SubmitChanges()
Catch ex As Exception
    Console.WriteLine(ex)
    ' Provide for exceptions
End Try