C#

    public partial class Form1 : Form {

        public Form2 Form2 { get; set; }

        public Form1() {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e) {

            Form2.MyStringIfWantToSet = "Hello World";
        }
    }

    public partial class Form2 : Form {

        public string MyStringIfWantToSet {
            get {
                return textBox1.Text;
            }
            set {
                textBox1.Text = value;
            }
        }

        public Form2() {
            InitializeComponent();
        }
    }

[STAThread]
        static void Main() {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);

            Form1 form1 = new Form1();
            Form2 form2 = new Form2();

            form1.Form2 = form2;

            form2.Show();

            Application.Run(form1);
        }

MyDataTable = New DataTable ();
SqlConnect con = new SqlConnection ("connection string goes here ") ;
SqlDataAdapter SqlDa = new SqlDataAdapter ("SELECT * FROM myTable", conn);
SqlDa.Fill(myDataTable);

foreach ( DataRow dr in MyDataTable.Rows)
{
     dr["ColumnName"] = dr["ColumnName"].toString().Trim();
}

var NameList = (from param_enum_desc in dsPartnertype.Tables[0].AsEnumerable()
                        select new
                        {
                            POS_VALUE = param_enum_desc.Field<string>("POS_VALUE"),
                            POS_DESCR = param_enum_desc.Field<string>("POS_DESCR")
                        });

        stoPartner.DataSource = NameList;
        stoPartner.DataBind();

var NameList = (from param_enum_desc in dsPartnertype.Tables[0].AsEnumerable()
                        select new
                        {
                            POS_VALUE = param_enum_desc.Field<string>("POS_VALUE").Trim(),
                            POS_DESCR = param_enum_desc.Field<string>("POS_DESCR").Trim()
                        });

        stoPartner.DataSource = NameList;
        stoPartner.DataBind();