C#

Chiamare un costruttore da un altro costruttore

public FormNewArticolo(string id):this()
        {
            //blabla
        }
        public FormNewArticolo()
        {
            InitializeComponent();
            dtCategorie = new DataTable();
            dtSubCat = new DataTable();
            dtCategorie.Columns.Add("Nome");
            dtSubCat.Columns.Add("Nome");
            dtSubCat.Columns.Add("Categoria");
        }

Andale Mono e Consolas download

Since it took me a while to find these 2 fonts (which are very useful for coding), i’ve uploaded them both to rapidshare mirror.

Link: http://rapidshare.com/files/24663204/DevFonts.rar

Use ListView Groups

How To Group ListView Items

            listView1.Groups.Add(new ListViewGroup("List item text",HorizontalAlignment.Left));
            listView1.Groups.Add(new ListViewGroup("Bla", HorizontalAlignment.Left));
            listView1.Groups[1].
            listView1.Items.Add("Prova");
            listView1.Items[listView1.Items.Count - 1].Group = listView1.Groups[0];
            listView1.Items.Add("Prova2");
            listView1.Items[listView1.Items.Count - 1].Group = listView1.Groups[0];
            listView1.Items.Add("Prova3");
            listView1.Items[listView1.Items.Count - 1].Group = listView1.Groups[1];

Convertire i bytes in kb,mb,gb

Piccola funzioncina x conversione dei byte che mi sono dovuto fare per 1 progetto.
Funziona solo fino ai giga, per i terra aggiungete un paio di linee

public string convertByteInOther(string stBytes)
        {
            string ris="";
            double bytes = Convert.ToInt32(stBytes);
            if (bytes < 1048576)
                ris = Convert.ToString(Math.Round(bytes / 1024, 2)) + " Kb";
            else if (bytes < 1073741824)
                ris = Convert.ToString(Math.Round(bytes / 1024 / 1024, 2)) + " Mb";
            else if (bytes < 1099511627776)
                ris = Convert.ToString(Math.Round(bytes / 1024 / 1024 / 1024, 2)) + " Gb";
            return ris;
        }

Analogo di explode in c#

public WebPageInterrogater(string url, string sFilters)
{
    _url = url;
    string[] filters = sFilters.Split(';');
    string pattern = string.Empty;
    for (int i = 0; i < filters.Length; i++ )
    {
        pattern = "\\" + filters[i].Replace("*",string.Empty) + "$" + "|";
        _filters += pattern;
    }
    _filters = _filters.Substring(0, _filters.Length-1);
}

Leggere dati da blob tramite select in firebird.

Conversione da System.byte[] in string

....
FbCommand cmd = new FbCommand("select * from articoli order by nome asc", db.GetConnection());
                FbDataReader dr = cmd.ExecuteReader();
                if (!dr.HasRows)
                    return;
                while (dr.Read())
                {
                    byte[] bytes = (byte[])dr["descrizione"];
                    System.Text.ASCIIEncoding enc = new System.Text.ASCIIEncoding();
                    string descrizione = enc.GetString(bytes);
 ....