C# ( .NET) ต้องการ get valuemember จาก listbox. เป็นแบบ muti select

String destStr="";
for(int cnt = 0;cnt <listBox1.SelectedItems.Count;cnt++)
{
         destStr= destStr+ "," + listBox1.SelectedItems[cnt].ToString();
}
MessageBox.Show(destStr);

ListItem Item; 
foreach (int Item in ListBox.Items) { 
 if (Item.Selected == true) { 
   ItemText.Text += Item.Text + " "; 
   ItemValue.Text += Item.Value + " "; 
 } 
}

		for(i = 0 ; i <=  this.myListBox3.Items.Count - 1; i ++)
		{
			if(this.myListBox3.Items[i].Selected)
			{
				this.lblText3.Text = this.lblText3.Text + "," + this.myListBox3.Items[i].Value; //*** Or this.myListBox3.Items[i].Text ***//
			}
		}

//load listbox 

Private void load()
{
   DataTable dt = loaddata();
    Foreach(DataRow dr in dt.Rows)
     {
       String Name = Convert.Tostring(dr["Name"]);
       String Code = Convert.ToString(dr["Code"]);

        Listbox.Item.Add(Name);
        Listbox.DisplayMember = Name;
        Listbox.ValueMember = Code;
     }
}

//get value 
//SelectionMode = MultiSimple