Asp.net membership password format value set to 1

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encryption

membership

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I have a project to understand and modified. in this the developer is using asp.net membership provider for user registration purposes. I need to know which password encryption technique is using in this project.
My web.config file is this.

<membership>
     <providers>
       <clear />
       <add name="AspNetSqlMembershipProvider" type="System.Web.Security.SqlMembershipProvider" connectionStringName="ApplicationServices" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" requiresUniqueEmail="false" maxInvalidPasswordAttempts="5" minRequiredPasswordLength="6" minRequiredNonalphanumericCharacters="0" passwordAttemptWindow="10" applicationName="/" />
     </providers>
   </membership>

and in the sql database table in asp_membership the column passwordFormat is set to 1.

I have wrote another program to see that if i done this customize with sh1. but it did not return the matched value.
E.G

email; abc@gmail.com , Password: XD/9f1M211z5jv2LTazSrVgPyrc= , PasswordSalt: T3pit6T+AnxAEWFslVd5Lw==

here is my code

protected void btn_register_Click(object sender, EventArgs e)
    {

        user_email = tbx_email.Text.Trim();
        user_password = tbx_password.Text.Trim();
        //string salt = CreateSalt(8);
        string salt = "T3pit6T+AnxAEWFslVd5Lw==";
        string haspassword = CreatePasswordHash(user_password, salt);
        db1.sqlcmd = new SqlCommand("usp_register_user");
        try{

            using (SqlDataAdapter sda = new SqlDataAdapter())
            {
                db1.sqlcmd.CommandType = CommandType.StoredProcedure;
                db1.sqlcmd.Parameters.AddWithValue("@email", user_email);
                db1.sqlcmd.Parameters.AddWithValue("@Password", haspassword);
                db1.sqlcmd.Parameters.AddWithValue("@PasswordSalt", salt);
                db1.sqlcmd.Parameters.Add("@success", SqlDbType.Bit);
                db1.sqlcmd.Parameters["@success"].Direction = ParameterDirection.Output;
                db1.sqlcmd.Connection = db1.sqlcon;
                db1.sqlcon.Open();
                db1.sqlcmd.ExecuteScalar();
                success = Convert.ToBoolean(db1.sqlcmd.Parameters["@success"].Value);
            }
        }
        catch (Exception ex)
        {
            Response.Write(ex.Message);
        }
        finally
        {
            if (success == true)
            {
                db1.sqlcon.Close();
                lbl_status.Text = "Ho Gya..";
                lbl_status.ForeColor = System.Drawing.Color.Green;
                lbl_status.Visible = true;
              
            }
            else
            {
                db1.sqlcon.Close();
                lbl_status.Text = "Nahi Huwa Yar.. Phr Try kro";
                lbl_status.ForeColor = System.Drawing.Color.Red;
                lbl_status.Visible = true;
            }
          
        }
    }

private static string CreatePasswordHash(string pwd, string salt)
    {
        string saltAndPwd = String.Concat(pwd, salt);
        string hashedPwd = FormsAuthentication.HashPasswordForStoringInConfigFile(saltAndPwd, "sha1");
        return hashedPwd;
    }

and now the result is this:

E.G

email; abc@gmail.com , Password: 57C0E8D97D5A3652320D0CA660526DD3A1E6C235 , PasswordSalt: T3pit6T+AnxAEWFslVd5Lw==

it should store this na;

email: abc@gmail.com , Password: XD/9f1M211z5jv2LTazSrVgPyrc= , PasswordSalt: T3pit6T+AnxAEWFslVd5Lw==

help me to Where did i go wring?