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);
    }
}

其中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？

由于

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"]); } }

另一种方法是覆盖不太喜欢的OnLoad（）。

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：你在覆盖派生类中的FactsheetBase Page_Load方法。

为了执行它，您应该执行类似

的操作

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肯定给了你一个更清洁的解决方案（我不是ASPX程序员）。

Answer 4

尝试这个

 public partial class PerformanceFactsheet : FactsheetBase
{
    public PerformanceFactsheet()
    {
        this.Load += new EventHandler(this.Page_Load);
    }

    protected void Page_Load(object sender, EventArgs e)
    {            
        divPerformance.Controls.Add(this.Data);
    }
}

public abstract class FactsheetBase : System.Web.UI.Page
{
    public MyPageData Data { get; set; }
    public FactsheetBase()
    {
        this.Load += new EventHandler(this.Page_Load);
    }

    new protected void Page_Load(object sender, EventArgs e)
    {            
        this.Data = ExtractPageData(Request.QueryString["data"]);
    }
}

Answer 5

试试这个：

     public partial class PerformanceFactsheet : FactsheetBase
{
    protected override 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);
    }
}

public class FactsheetBase : System.Web.UI.Page
{
    public MyPageData Data { get; set; } 
    protected virtual 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"]);            
    }
}

Answer 6

将页面加载为公共，并从其他页面以这样的方式调用它：

this.myPageOrUserControl.Page_Load(null, EventArgs.Empty);

如何在Page的基类中执行Page_Load（）？

6 个答案: