Image Control And DB

I wanna know how to retrieve & insert an image from/to a Sql Server database.
using image control or any other control 
I’ve done that with windows form picture box.
As that was explained in MS tutorials  
Code….
-------------------------------------------Dim ms As New MemoryStreamPictureBox1.Image.Save(ms, PictureBox1.Image.RawFormat)Dim arrImage() As Byte = ms.GetBuffer
ms.Close()   Dim strSQL As String = _            "INSERT INTO Emp (EmpName,EmpSalary,Picture)" & _            "VALUES (@EmpName,@EmpSalary,@Picture)"  Dim cmd As New SqlCommand(strSQL, ConnEmp) With cmd     .Parameters.Add(New SqlParameter("@Picture", _      SqlDbType.Image)).Value = arrImage       .Parameters.Add(New SqlParameter("@EmpName", _       SqlDbType.NVarChar)).Value = txtEmpName.Text        .Parameters.Add(New SqlParameter("@EmpSalary", _        SqlDbType.Decimal)).Value = txtEmpSalary.Text   End With 
 cmd.ExecuteNonQuery()
------------------------------------------- 
But with a web form’s image control I DO NOT know how to do it    
I real appreciate your help 
Thank you