Enumerable.Range(0, 100)

var syss = Enumerable.Range(0, 100)
.Select(a => new SysSet
{
SetType = SetType.Sys,
SetName = "服务器IP",
SetVal = "192.168.1."+ a
})
.ToList();
ctx.SysSet.AddRange(syss);
ctx.SaveChanges();