In this Post Encrypt Password Before saving into Database Asp.Net

Important Namespaces Used
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using System.Data;
using System.Data.SqlClient;
using System.Text;

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 String encrypwd;

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Signup Button Click Event 
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 if(TextBox2.Text==TextBox3.Text)
        {
            encryption();
            String query = "insert into userlogin(username,password) values('" + TextBox1.Text + "','" + encrypwd +"')";
            String mycon = "Data Source=HP-PC\\SQLEXPRESS; Initial Catalog=UserLoginData; Integrated Security=true";
            SqlConnection con = new SqlConnection(mycon);
            con.Open();
            SqlCommand cmd = new SqlCommand();
            cmd.CommandText = query;
            cmd.Connection = con;
            cmd.ExecuteNonQuery();
            Label3.Text = "You Have Successfully Registered";
            TextBox1.Text = "";
            TextBox2.Text = "";
            TextBox3.Text = "";
        }
        else
        {
            Label3.Text = "Password and Confirm Password Does not matched";
        }

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User Defined Method
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 public void encryption()
    {
        string strmsg = string.Empty;
        byte[] encode = new byte[TextBox1.Text.ToString().Length];
        encode = Encoding.UTF8.GetBytes(TextBox1.Text);
        strmsg = Convert.ToBase64String(encode);
        encrypwd= strmsg;
    }

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