Combine several array into one array

//Insert data
            List<string> AllData = new List<string>();
            List<string> Header = new List<string> { "Status", "Percentage", "Total", "Profit" };
            List<string> Header2 = new List<string> { "m3", "m3", "m3", "m3" };
            List<string> TableData = new List<string> { "ok", "10", "10", "Up", "10", "10", "10", "10", "10", "10", "10", "10" };

            AllData.AddRange(HeaderData);
            AllData.AddRange(HeaderData2);
            AllData.AddRange(TableData);

Description

1. The above sample coding shows how to add several array into one array