有一个结构
public struct st
{
double a;
int b;
string c;
}声明了几个st的对象,放在arraylist中;
如 Arraylist arr=new Arraylist();
st st1=new st();
st1.a=5.2;
st1.b=2;
st1.c=3;
arr.add(st1); st st2=new st();
st2.a=5.2;
st2.b=2;
st2.c=3;
arr.add(st2);
我想在怎么取出结构st1里德元素
public struct st
{
double a;
int b;
string c;
}声明了几个st的对象,放在arraylist中;
如 Arraylist arr=new Arraylist();
st st1=new st();
st1.a=5.2;
st1.b=2;
st1.c=3;
arr.add(st1); st st2=new st();
st2.a=5.2;
st2.b=2;
st2.c=3;
arr.add(st2);
我想在怎么取出结构st1里德元素
Console.WriteLine("stu1中的a为:{0}",test.a);
Console.WriteLine("stu1中的b为:{0}",test.b);
Console.WriteLine("stu1中的c为:{0}",test.c);
另外你的结构中的字段要加public修饰符.
st st1 = new st();
st1.a = 5.2;
st1.b = 2;
st1.c = "3";
arr.Add(st1); st st2 = new st();
st2.a = 5.2;
st2.b = 2;
st2.c = "3";
arr.Add(st2);
for (int i = 0; i < arr.Count;i++)
{
if (arr.Contains(st1))
{
Console.WriteLine(st1.a+" "+st1.b+" "+st1.c);
break;
}
}
{
public double a; //你的没有public,不写modifier的话,默认是private
public int b;
public string c;
} ArrayList arr = new ArrayList(); //L是大写
st st1 = new st();
st1.a = 5.2;
st1.b = 2;
st1.c = "3"; //c的类型是String,你却赋的整数3
arr.Add(st1); st st2 = new st();
st2.a = 5.2;
st2.b = 2;
st2.c = "3";
arr.Add(st2); for (Int32 i = 0; i < arr.Count; i++)
{
st temp = (st)arr[i];
Console.WriteLine(temp.a + " " + temp.b + " " + temp.c);
}