的DataGridView的列表中添加多個行中列出對象

Question

我有兩個類Employee和Department如下

class Employee 
{ 
    public string ID {get;set;} 
    public string Name {get;set;} 
    public List<Departments> AssociatedDepartment {get;set;} 
} 

class Department 
{ 
    public string DepartmentID {get;set;} 
    public string DepartmentName {get;set;} 
} 

我綁定一個DataGridView與List<Employee>。它顯示僱員的名單Employees但不是Department。

List<Employee> employeeList = GetEmployeeList(); 

if (employeeList != null) 
{ 
    grdResponse.DataSource = employeeList; 
} 

現在它顯示以下數據。

ID Name 
--------- 
1 Joe 
2 Tim 

我應該怎麼做才能得到關注？

ID Name Department 
-------------------- 
1 Joe Software 
1 Joe Management 
2 Tim Hardware 

Answer 1

可以延長Employee類只得到屬性（列將是隻讀）

class Employee 
{ 
    public string ID { get; set; } 
    public string Name { get; set; } 

    public string Departments 
    { 
     get 
     { 
      if (AssociatedDepartment == null || AssociatedDepartment.Count == 0) 
       return string.Empty; 
      return string.Join(", ", AssociatedDepartment.Select(d => d.DepartmentName)); 
     } 
    } 

    public List<Department> AssociatedDepartment { get; set; } 
} 

Answer 2

添加以下屬性的員工：

public string Department 
{ 
    get 
    { 
     string departments = string.Empty; 
     foreach (Department department in AssociatedDepartment) 
     { 
      if (departments.Length != 0) 
       departments += ", "; 
      departments += department.DepartmentName; 
     } 
     return departments; 
    } 
}