如何写用foreach结构的阵列中的C＃

Question

在这里我无法用foreach：

'错误CS0030无法将类型“ConsoleApplication5._3.Struct.Sach”到“廉政”

我该如何解决？

public struct Sach 
{ 
    public string TenSach; 
    public string TacGia; 
    public string GioiThieu; 
    public int ID; 
    public void nhapdulieu(string q,string w, string e, int r) 
    { 
     TenSach = q; 
     TacGia = w; 
     GioiThieu = e; 
     ID = r; 
    } 
    public void Insach() 
    { 
     Console.Write($"Ten sach: {TenSach}\n"); 
     Console.Write($"Tac gia: {TacGia}\n"); 
     Console.Write($"Gioi thieu: {GioiThieu}\n"); 
     Console.Write($"Ma sach: {ID}\n"); 
    } 
}; 


public class QuanLySach 
{ 
    public static void NhapSach() 
    { 

     Sach[] sach1 = new Sach[4]; 
     for(int i=0;i<4;i++) 
     { 
      Console.WriteLine("nhap ten sach, tac gia, gioi thieu, id:"); 
      sach1[i].TenSach = Console.ReadLine(); 
      sach1[i].TacGia = Console.ReadLine(); 
      sach1[i].GioiThieu = Console.ReadLine(); 
      var vv = Console.ReadLine(); 
      Int32.TryParse(vv, out sach1[i].ID); 
     } 

     foreach(int bb in sach1) 
     { 
     // in here i cant use foreach but i dont know why? 
     } 
     Console.ReadLine(); 
    } 
    } 
} 

Answer 1

您错误地使用了foreach。 Foreach循环将迭代低谷序列，并且您的bb应该与该序列的基本类型相同。在你的情况下，它应该是：

foreach(Sach bb in sach1) 
{ 
    // in here i cant use foreach but i dont know why? 
}