Converting An Inline Sql To A Stored Procedure

Hi i have the following method in my page, it works fine and everything, but i am trying to modify it so that it can take a stored procedure;

 protected void Button1_Click(object sender, EventArgs e)

{SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["streamConnectionString"].ConnectionString);String sql = "SELECT userID, userName FROM users WHERE userName LIKE " + "'" + userName.Text + "%' OR organisation= " + "'" + OrganisationList.SelectedValue + "'";

conn.Open();

SqlCommand comm = new SqlCommand(sql, conn);SqlDataReader reader = comm.ExecuteReader(CommandBehavior.CloseConnection);

DataList1.DataSource = reader;

DataList1.DataBind();

conn.Close();

}

 

My question is what should my stored procedure be, and also how will i now structure the above method.