Update Entity : Update Rows in Database (LINQ, Entity Framework)

        private void frmMain_Load(object sender, EventArgs e)
        {
                // Create new entities from Entities
                using (var db = new myDatabaseEntities())
                {
                    // Update CUSTOMER
                    string strCustomerID = "C005";

                    // Update Statement
                    var update = db.CUSTOMER.Where(o => o.CUSTOMER_ID == strCustomerID).FirstOrDefault();
                    if (update != null)
                    {
                        update.BUDGET = 6000000;
                        update.USED = 100000;
                    }

                    db.SaveChanges();
                }
        }

    Private Sub frmMain_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        ' Create new entities from Entities
        Using db = New myDatabaseEntities()
            ' Update CUSTOMER
            Dim strCustomerID As String = "C005"

            ' Update Statement
            Dim update = db.CUSTOMER.Where(Function(o) o.CUSTOMER_ID = strCustomerID).FirstOrDefault()
            If update IsNot Nothing Then
                update.BUDGET = 6000000
                update.USED = 100000
            End If

            db.SaveChanges()
        End Using
    End Sub

        private void frmMain_Load(object sender, EventArgs e)
        {
                // Create new entities from Entities
                using (var db = new myDatabaseEntities())
                {
                    // Update CUSTOMER
                    string strCustomerID = "C005";

                    // Update Statement
                    var update = (from c in db.CUSTOMER
                                  where c.CUSTOMER_ID == strCustomerID
                                  select c).FirstOrDefault();
                    if (update != null)
                    {
                        update.BUDGET = 6000000;
                        update.USED = 100000;
                    }

                    db.SaveChanges();
                }
        }

    Private Sub frmMain_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        ' Create new entities from Entities
        Using db = New myDatabaseEntities()
            ' Update CUSTOMER
            Dim strCustomerID As String = "C005"

            ' Update Statement
            Dim update = (From c In db.CUSTOMER Where c.CUSTOMER_ID = strCustomerID
                    Select c).FirstOrDefault()
            If update IsNot Nothing Then
                update.BUDGET = 6000000
                update.USED = 100000
            End If

            db.SaveChanges()
        End Using
    End Sub

        private void frmMain_Load(object sender, EventArgs e)
        {
            // Create new entities from Entities
            using (var db = new myDatabaseEntities())
            {
                // Update CUSTOMER
                string strCountryCode = "US";

                // Update Statement
                var update = (from c in db.CUSTOMER
                              where c.COUNTRY_CODE == strCountryCode
                              select c).ToList();
                if (update.Count() > 0)
                {
                    // Loop update
                    foreach (var item in update)
                    {
                        item.BUDGET = 5000000;
                        item.USED = 200000; 
                    }
                }

                db.SaveChanges();
            }
        }

    Private Sub frmMain_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        ' Create new entities from Entities
        Using db = New myDatabaseEntities()
            ' Update CUSTOMER
            Dim strCountryCode As String = "US"

            ' Update Statement
            Dim update = (From c In db.CUSTOMER Where c.COUNTRY_CODE = strCountryCode
                    Select c).ToList()
            If update.Count() > 0 Then
                ' Loop update
                For Each item In update
                    item.BUDGET = 5000000
                    item.USED = 200000
                Next
            End If

            db.SaveChanges()
        End Using
    End Sub

        private void frmMain_Load(object sender, EventArgs e)
        {
                // Create new entities from Entities
                using (var db = new myDatabaseEntities())
                {
                    // Update CUSTOMER
                    string strCountryCode = "US";

                    // Update Statement
                    var update = db.CUSTOMER.Where(o => o.COUNTRY_CODE == strCountryCode).ToList();
                    if (update.Count() > 0)
                    {
                        // Loop update
                        update.ForEach(o => { o.BUDGET = 5000000; o.USED = 100000; });
                    }

                    db.SaveChanges();
                }
        }

    Private Sub frmMain_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        ' Create new entities from Entities
        Using db = New myDatabaseEntities()
            ' Update CUSTOMER
            Dim strCountryCode As String = "US"

            ' Update Statement
            Dim update = db.CUSTOMER.Where(Function(o) o.COUNTRY_CODE = strCountryCode).ToList()
            If update.Count() > 0 Then
                ' Loop update
                update.ForEach(Function(o) {o.BUDGET = 5000000, o.USED = 100000})
            End If

            db.SaveChanges()
        End Using
    End Sub