如何在Page的基类中执行Page_Load()？

Question

我有以下PerformanceFactsheet.aspx.cs页面类

public partial class PerformanceFactsheet : FactsheetBase
{
    protected void Page_Load(object sender, EventArgs e)
    {
        // do stuff with the data extracted in FactsheetBase
        divPerformance.Controls.Add(this.Data);
    }
}

FactsheetBase定义为

public class FactsheetBase : System.Web.UI.Page
{
    public MyPageData Data { get; set; } 
    protected void Page_Load(object sender, EventArgs e)
    {
        // get data that's common to all implementors of FactsheetBase
        // and store the values in FactsheetBase's properties
        this.Data = ExtractPageData(Request.QueryString["data"]);            
    }
}

问题是FactsheetBase的Page_Load没有执行.

谁能告诉我我做错了什么？有没有更好的方法来获得我追求的结果？

谢谢

Answer 1

我们遇到了类似的问题,你需要做的只是在构造函数中注册处理程序.:)

public class FactsheetBase : System.Web.UI.Page 
{ 

    public FactsheetBase()
    {
        this.Load += new EventHandler(this.Page_Load);
    }

    public MyPageData Data { get; set; }  
    protected void Page_Load(object sender, EventArgs e) 
    { 
        // get data that's common to all implementors of FactsheetBase 
        // and store the values in FactsheetBase's properties 
        this.Data = ExtractPageData(Request.QueryString["data"]);             
    } 
}

另一种方法是重写OnLoad(),这是不太优选的.

public class FactsheetBase : System.Web.UI.Page 
{ 

    public FactsheetBase()
    {
    }

    public MyPageData Data { get; set; }  
    protected override void OnLoad(EventArgs e)
    {
        //your code
        // get data that's common to all implementors of FactsheetBase 
        // and store the values in FactsheetBase's properties 
        this.Data = ExtractPageData(Request.QueryString["data"]);             

        base.OnLoad(e);
    }
}

Answer 2

而不是Page_Load()方法,重写OnLoad()并在PerformanceFactsheet中调用base.OnLoad()

Answer 3

嗯，我可能错了，但我相信这是由于继承：您正在覆盖派生类中的 FactsheetBase Page_Load 方法。

为了让它执行，你应该做类似的事情

public partial class PerformanceFactsheet : FactsheetBase
{
    protected void Page_Load(object sender, EventArgs e)
    {
        base.Page_Load( sender, e );
        // do stuff with the data extracted in FactsheetBase
        divPerformance.Controls.Add(this.Data);
    }
}

编辑：n8wrl 绝对给了你一个更简洁的解决方案（我不是 ASPX 程序员）。