The Weird and The Wonderful

protected void cvaliDatum_ServerValidate(object source, ServerValidateEventArgs args)
{
    if (tbDatum.Text.Trim() != "") // useless - parsing an empty string would fail anyway 
    {
        DateTime datok;
        if (DateTime.TryParse(tbDatum.Text.Trim(), out datok))
        {
            if (datok > DateTime.Now)  // the date may not be in the future, so this should be <= and not >
            {
                TimeSpan span = DateTime.Now - datok;
                if (span.Days > 14)     // the date may not lie back more than 14 days
                {
                    if ((Konstanten.Status == -1) || (Konstanten.Status == 1))  // who knows what that's supposed to mean
                    {
                        args.IsValid = false;
                    }
                    else
                    {
                        args.IsValid = true;
                    }
                }
                else
                {
                    args.IsValid = false;
                }
            }
            else
            {
                args.IsValid = true;  // This is plain wrong - should be false            }
        }
        else
        {
            args.IsValid = false;
        }
    }
    else
    {
        args.IsValid = false;
    }
}

If (name.ToUpper() == "CamelCasedName".ToUpper()) {...}

'in here he put the dataTables of a dataSet in a dataTable
pt = dsPubs.Tables(0)
appt = dsPubs.Tables(1)

'below here he set the datasource of the gridview with the specified dataTable of the dataSet, what is the purpose of the above code then?
GridView1.DataSource = dsPubs.Tables(0)
GridView1.DataBind()
GridView2.DataSource = dsPubs.Tables(1)
GridView2.DataBind()