public class MEmployee
{
  public string Name { get; private set; }
  public decimal Salary { get; private set; }
  public MEmployee(string name, decimal salary)
  {
    this.Name = name;
    this.Salary = salary;
  }
  public override string ToString()
  {
    return string.Format("{0},{1:C}", Name, Salary);
  }
  public static bool CompareSalary(MEmployee e1, MEmployee e2)
  //定義一個靜態(tài)的比較函數(shù)
  {
    return e1.Salary < e2.Salary;
  }
}

比較類定義：

//BubbleSorter現(xiàn)在已經(jīng)是一個通用的排序類了,這里委托起到了關鍵的作用

public class BubbleSorter
{
  //該函數(shù)接收兩個參數(shù),第一個為泛型數(shù)組參數(shù)，
  //第二個是系統(tǒng)自定義的Func委托，它接收兩參數(shù)，返回bool類型
  public static void Sort<T>(IList<T> sortArray,Func<T,T,bool> comparison)
  {
    for (int i = 0; i < sortArray.Count; i++)
    {
      for (int j = i + 1; j < sortArray.Count; j++)
      {
        if (comparison(sortArray[j],sortArray[i]))
        //調(diào)用委托進行大小比較
        {
          T temp =sortArray[i];
          sortArray[i] = sortArray[j];
          sortArray[j] = temp;
        }
      }
    }
  }
}

測試代碼：

private void button_測試委托3_Click(object sender, EventArgs e)
{
  MEmployee[] employees =
  {
    new MEmployee("Ronaldo",40000),
    new MEmployee("Rivaldo",35000),
    new MEmployee("CRonaldo",80000)
  };
  BubbleSorter.Sort<MEmployee>(employees, MEmployee.CompareSalary);
  foreach (MEmployee oTmp in employees)
  {
    Console.WriteLine(oTmp.ToString());
  }
}

測試結(jié)果如下圖所示：