Using Keyword For Custom Class In C#

Public class Employee {
  public Employee() {
    MyDataSet = new DataSet();
  }
  public DataSet MyDataSet {
    get;
    set;
  }
}

using(Employee emp = new Employee()) {

}

public class Employee: IDisposable {
  public Employee() {
    MyDataSet = new DataSet();
  }
  public DataSet MyDataSet {
    get;
    set;
  }
  public void Dispose() {
    Dispose(true);
    GC.SuppressFinalize(this);
  }

  private bool IsDisposed = false;

  protected virtual void Dispose(bool disposing) {
    if (!IsDisposed && disposing) {
      MyDataSet.Dispose();
      IsDisposed = true;
    }
  }
}

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