Here's a sample code see it
private void button1_Click(object sender, System.EventArgs e)
{
String strItem;
foreach(Object selecteditem in listBox1.SelectedItems)
{
strItem = selecteditem as String;
System.Diagnostics.Debug.WriteLine(strItem);
//Process(strItem);
}
}
C#is used in so many environments, please specify in the tags what platform are you using... and if you are talking in Database, what ORM are you using.