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private Lücke button1_Click (Gegenstandabsender, EventArgs e) { aufreihen s = „abcdef asdf ga3dsf fjaf“; firstletters = "" aufreihen; foreach (Schnur c in s.Split (neue Putzfrau [] {''}, in StringSplitOptions.RemoveEmptyEntries)) { firstletters += c [0]; } firstletters = firstletters.ToUpper (); MessageBox.Show („„“ + firstletters + „“ "); }