string s = ConfigurationManager.ConnectionStrings["my"].ConnectionString;
SqlConnection con = new SqlConnection(s);

SqlCommand cmd = new SqlCommand("[dbo].aspnet_Applications_CreateApplication", con);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@ApplicationName", SqlDbType.NVarChar, 256).Value = txtApplicationName.Text;

SqlParameter param = new SqlParameter("@ApplicationId", SqlDbType.UniqueIdentifier);
param.Direction = ParameterDirection.Output;
cmd.Parameters.Add(param);

using (con)
{
    con.Open();
    cmd.ExecuteNonQuery();
}

lblMessage.Text = param.Value.ToString();
　

string s = ConfigurationManager.ConnectionStrings["my"].ConnectionString;
SqlConnection con = new SqlConnection(s);

SqlCommand cmd = new SqlCommand("[dbo].aspnet_Users_CreateUser", con);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@ApplicationId", SqlDbType.UniqueIdentifier).Value = new Guid(txtApplicationID.Text);
cmd.Parameters.Add("@UserName", SqlDbType.NVarChar, 256).Value = txtUserName.Text;
cmd.Parameters.Add("@IsUserAnonymous", SqlDbType.Bit).Value = chkUserAnonymous.Checked;
cmd.Parameters.Add("@LastActivityDate", SqlDbType.DateTime).Value = DateTime.Parse(txtLastActigityDate.Text);

SqlParameter param = new SqlParameter("@UserId", SqlDbType.UniqueIdentifier);
param.Direction = ParameterDirection.Output;
cmd.Parameters.Add(param);

using (con)
{
    con.Open();
    cmd.ExecuteNonQuery();
}

lblMessage.Text = param.Value.ToString();