C# nybegynder

Hej. Jeg er begynder i c# programmering. Er der nogen der kan fortælle mig hvad der sker i kodelinjerne for nedenstående metoder :

public Kontaktperson()
{
DataManager.Current.Engine.StartTracking(this, Wilson.ORMapper.InitialState.Inserted);
}

og denne :

public void SearchData(string category, string word)
{
if (category == "Kompetencer")
{
ObjectCollection<Kontaktperson> oColl = new ObjectCollection<Kontaktperson>();

ObjectSet<Kontaktperson> coll = DataManager.Current.Engine.GetObjectSet<Kontaktperson>("");
foreach (Kontaktperson k in coll)
foreach (Kompetence kk in k.Kompetencer)
if (kk.Navn.ToLower().Contains(word.ToLower()))
oColl.Add(k);

dataGrid1.DataSource = oColl;

}
else
{

Type dmType = DataManager.Current.GetType();
PropertyInfo[] props = dmType.GetProperties();
foreach (PropertyInfo prop in props)
{
if (prop.Name == category)
{
object coll = prop.GetValue(DataManager.Current, null);
dataGrid1.DataSource = coll.GetType().GetMethod("Search").Invoke(coll, new object[] { word });
}


og denne :

private void dataGrid1_MouseClick(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
DataGrid.HitTestInfo info = dataGrid1.HitTest(e.Location);
if (info.Row > -1)
{
for (int i = 0; i < ((ICollection)dataGrid1.DataSource).Count; i++) dataGrid1.UnSelect(i);
dataGrid1.Select(info.Row);
this.contextMenuStrip1.Tag = ((IList)dataGrid1.DataSource)[info.Row];
this.contextMenuStrip1.Show(dataGrid1, e.Location);
}