ASP.NET

public static string HashPassword(string plainMessage)
    {
        byte[] data = Encoding.UTF8.GetBytes(plainMessage);
        using (HashAlgorithm sha = new SHA256Managed())
        {
            byte[] encryptedBytes = sha.TransformFinalBlock(data, 0, data.Length);
            return Convert.ToBase64String(sha.Hash);
        }
    }

  
    #endregion

    protected void btnSubmit_Click(object sender, EventArgs e)
    {
        bo.UserID = txtUserId.Text;
        Password p = new Password(txtPassword.Text.ToString());
        String newpwd = p.SaltedPassword;
        System.Nullable<int> newsaltkey = p.Salt;
        bo.Encryptpwd = newpwd;
        bo.Saltkey = p.Salt;
        bo.Password = txtPassword.Text;

        passwordFormat = MembershipPasswordFormat.Hashed;
        if (passwordFormat == MembershipPasswordFormat.Hashed)
            bo.Blogpwd = HashPassword(txtPassword.Text);
        else
            bo.Blogpwd = txtPassword.Text;

Foo NewFoo = new Foo();

NewFoo.ID = 10;
NewFoo.Select();

Foo NewFoo = new Foo(10).Select();

Foo NewFoo = new Foo(10);

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.IO;
namespace SomeNameSpace
{
        [Serializable]
        public class SomeClass
        {
                public SomeMethod { ... }
        }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.IO;
namespace SomeNameSpace
{
        public partial class _Default : System.Web.UI.Page
        {
                protected void Page_Load(object sender, EventArgs e)
                {
                        SomeClass sc = new SomeClass(); //<-- error
                  
                }
        }
}