Entity and Stored Procedure (LINQ, Entity Framework)

CREATE PROCEDURE [dbo].[getCustomer]
	@pCountryCode	VARCHAR(2)
AS
BEGIN

	-- set count customer
	SELECT * FROM CUSTOMER WHERE COUNTRY_CODE = @pCountryCode

END

CREATE PROCEDURE [dbo].[insertCustomer]
	@pCustomerID	VARCHAR(4),
	@pName			VARCHAR(50),
	@pEmail			VARCHAR(50),
	@pCountryCode	VARCHAR(2),
	@pBudget		DECIMAL(18,2),
	@pUsed			DECIMAL(18,2)
AS
BEGIN

	-- insert customer
	INSERT INTO CUSTOMER VALUES (@pCustomerID,@pName,@pEmail,@pCountryCode,@pBudget,@pUsed);

END

        private void frmMain_Load(object sender, EventArgs e)
        {
            // Create new entities from Entities
            using (var db = new myDatabaseEntities())
            {
                // Get result from Stored Procedure
                string strCountryCode = "US";
                var ds = db.getCustomer(strCountryCode).ToList();

                // if found item rows
                if (ds.Count() > 0)
                {
                    this.myDataGridView.DataSource = ds;
                }
            }
        }

    Private Sub frmMain_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        ' Create new entities from Entities
        Using db = New myDatabaseEntities()
            ' Get result from Stored Procedure
            Dim strCountryCode As String = "US"
            Dim ds = db.getCustomer(strCountryCode).ToList()

            ' if found item rows
            If ds.Count() > 0 Then
                Me.myDataGridView.DataSource = ds
            End If
        End Using
    End Sub

        private void frmMain_Load(object sender, EventArgs e)
        {
            // Create new entities from Entities
            using (var db = new myDatabaseEntities())
            {
                // Delcare variable
                string strCustomerID = "C005";
                string strName = "Rut Wisarut";
                string strEmail = "[email protected]";
                string strCountryCode = "TH";
                decimal iBudget = 5000000;
                decimal iUsed = 0;

                // Insert to Stored Procedure
                int intResult = db.insertCustomer(strCustomerID, strName, 
                    strEmail, strCountryCode, iBudget, iUsed);
            }
        }

    Private Sub frmMain_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        ' Create new entities from Entities
        Using db = New myDatabaseEntities()
            ' Delcare variable
            Dim strCustomerID As String = "C005"
            Dim strName As String = "Rut Wisarut"
            Dim strEmail As String = "[email protected]"
            Dim strCountryCode As String = "TH"
            Dim iBudget As Decimal = 5000000
            Dim iUsed As Decimal = 0

            ' Insert to Stored Procedure
            Dim intResult As Integer = db.insertCustomer(strCustomerID, _
                                                         strName, strEmail, strCountryCode, iBudget, iUsed)
        End Using
    End Sub