static void Delete()
{
StudentBusinessLayer ss = new StudentBusinessLayer();
Console.Write("请输入id");
int id = int.Parse(Console.ReadLine());
Class cals = ss.Query(id);
ss.Delete(cals);
}
static void QueryBlog()
{
StudentBusinessLayer st = new StudentBusinessLayer();
var classs = st.Query();
foreach (var itme in classs)
{
Console.WriteLine(itme.Classid + "" + itme.ClassName);
}
}
static void Update()
{
Console.WriteLine("请输入id");
int id = int.Parse(Console.ReadLine());
StudentBusinessLayer ss = new StudentBusinessLayer();
Class clas = ss.Query(id);
Console.WriteLine("请输入新名");
string name = Console.ReadLine();
clas.ClassName = name;
ss.Update(clas);
}
