//偶數隨機  Random evenRanm = new Random();  //奇數隨機  Random oddRanm = new Random();  string[] listColor = new string[]   {    "#2BB669","#FF5750","#39AFEA","#9A0089",    "#00CC6A","#717FF9","#4A5459","#00B7C3",    "#0078D7","#E2AB12"   };    //記載窗體執行   //偶數集合   List<string> evenNum=new List<string>();   //奇數集合   List<string> oddNum = new List<string>();   for (int j = 0; j < listColor.Count(); j++)   {    if (j % 2 == 0)    {     evenNum.Add(listColor[j]);    }    else    {     oddNum.Add(listColor[j]);    }   }   //對List賦值   List<Role_Info> list = new List<Role_Info>();   list.Add(new Role_Info() { Role_Name= "超級管理員"});   list.Add(new Role_Info() { Role_Name= "超級用戶" });   list.Add(new Role_Info() { Role_Name = "教師" });   list.Add(new Role_Info() { Role_Name="院長"});   list.Add(new Role_Info() { Role_Name = "校長" });   list.Add(new Role_Info() { Role_Name = "普通用戶" });   list.Add(new Role_Info() { Role_Name = "Test" });   list.Add(new Role_Info() { Role_Name = "用戶" });   list.Add(new Role_Info() { Role_Name = "測試用戶" });   list.Add(new Role_Info() { Role_Name = "Student" });   list.Add(new Role_Info() { Role_Name = "Teacher" });   list.Add(new Role_Info() { Role_Name = "游客" });   list.Add(new Role_Info() { Role_Name = "學生" });    Button btn=null;   for (int i = 0; i < list.Count; i++)   {    btn = new FButton();    if (i%2==0)    {     int even = evenRanm.Next(evenNum.Count());     btn.Content=list[i].Role_Name;     btn.Background = new SolidColorBrush((Color)ColorConverter.ConvertFromString(evenNum[even]));    }    else    {     int odd = oddRanm.Next(oddNum.Count());     btn.Content=list[i].Role_Name;     btn.Background = new SolidColorBrush((Color)ColorConverter.ConvertFromString(oddNum[odd]));     }   }     //最后將Button添加到控件