同一个类的实现,只是不同的父级,如何处理这个？

Question

我有两个类定义如下:

public class RoleButton: Button
{
   protected bool PrimaryRole;
    protected bool SecondaryRole;

    private string _role;
    private AuthenticatedPage CurrentPage
    {
        get { return (AuthenticatedPage)Page; }
    }

    protected UserInfo CurrentUser
    {
        get { return CurrentPage.CurrentUser; }
    }

    protected void SetRole(string role)
    {
        _role = role;
    }

    protected override void OnPreRender(EventArgs e)
    {
        base.OnInit(e);

        if (CurrentUser.IsSuperAdmin) return;
        DataTable dt = CommandController.GetButtonRoleForUserByPortalID(CurrentUser.UserID,
                                                                        ConvertUtility.ToInt32(AppEnv.PortalId()));

        if (dt.Rows.Count > 0)
        {
            if (dt.Rows.Count > 1)
            {
                PrimaryRole = ConvertUtility.ToBoolean(dt.Rows[0][_role]);
                SecondaryRole = ConvertUtility.ToBoolean(dt.Rows[1][_role]);

                if (!PrimaryRole && !SecondaryRole)
                {
                    Visible = false;
                }
                else
                {
                    Visible = true;
                }
            }
            else
            {
                PrimaryRole = ConvertUtility.ToBoolean(dt.Rows[0][_role]);
                Visible = PrimaryRole;
            }
        }
        else
        {
            Visible = false;
        }     
}


public class RoleImageButton: ImageButton
{
   ///
   ///same as above
   ///
}

这些类的实现完全相同,所以我想删除这个重复,但我不知道这样做的技术.

你能告诉我这样做的方法吗？

Answer 1

我将创建一个BaseButton派生自 的类Button。如果每个按钮有任何特定的更改，则派生BaseButton如下：

public class BaseButton : Button
{
   ///
   protected override void OnPreRender(EventArgs e)
   {
      // Common base implementationi
   }         
}

public class ImageButton: BaseButton
{
   // Specific implementation
   public ImageButton()
   {
      this.Name = "ImageButton";
   }
}

public class RoleButton: BaseButton
{
   // Specific implementation
   public RoleButton()
   {
      this.Name = "RoleButton";
   }
}