从 UserControl 页面，在父页面中调用 Page_Prerender [英] From UserControl page, Call Page_Prerender in Parent page

问题描述

我有一个 aspx 页面名称 MakeRedemption.aspx，其中有一个 UserControl (Search.ascx).

I have a aspx page name MakeRedemption.aspx, in which have a UserControl (Search.ascx).

MakeRedemption.aspx 中有 Page_Prerender().

There is Page_Prerender() in the MakeRedemption.aspx.

我想问一下，如何通过 Search.ascx 中的函数调用 MakeRedemption.aspx 中的 Page_Prerender().

I would like to ask, how can I call the Page_Prerender() from MakeRedemption.aspx, by a function in Search.ascx.

内容如下:

实际上，我的用户控制页面中的其中一个函数存在循环.

Actually there is a looping in one of the function in my User Control page.

Page_Prerender (MakeRedemption.aspx) 将在所有循环完成后触发.

The Page_Prerender (MakeRedemption.aspx) will trigger after all the loop finish.

我想要的是:每次在循环的每个项目结束之前，我都想触发 MakeRedemption.aspx 上的 Page_Prerender 来做某事.
类似的东西:

What I want is : Everytime before end of each itme of the loop, I will like to trigger the Page_Prerender on the MakeRedemption.aspx to do something.
Something like :

for (int i = 0 ; i < 10 ; i ++)
{
//some code here

// I would like to trigger Page_Prerender here to do something before end of the loop.
}  // the Page_Prerender (in MakeRedemption.aspx) trigger after all the loop finish.

意思是，这个 for 循环有 i = 10，因此，我想在 for 循环内触发 Page_Prerender 10 次.

Means that, this for loop has i = 10, thus, I would like to trigger the Page_Prerender 10 times inside the for loop.

我在 aspx 文件中的 PreRender 函数如下:

My PreRender function in the aspx file is as follow :

protected void Page_Prerender(object sender, EventArgs e)
    {
        //some code here
    }

不确定这个 Page_Prerender() 是否被认为是自动生成的 OnPreRender().

Not sure this Page_Prerender() is consider as the auto generate OnPreRender() or not.

我想触发这个 Page_Prerender() 而不是 OnPreRender() .

I would like to trigger this Page_Prerender() instead of OnPreRender() .

对不起，如果我问了一个愚蠢的问题，我是编程和 C# 的新手.

Sorry if I am asking a stupid question, I am new in programming and c#.

请多多指教.

谢谢.

推荐答案

我终于找到方法了，oodng 如下:在 aspx.cs 页面中添加以下代码:

Finally i find the way to do it, the oodng is as follow : Add this following code in the aspx.cs page:

delegate void DelMethodWithoutParam();

protected void Page_Load(object sender, EventArgs e)
    {
        DelMethodWithoutParam delParam = new DelMethodWithoutParam(Page_prerender);
        this.ucSearchGifts.PageMethodWithNoParamRef = delParam;
    }
Page_prerender(){
//some code here...

}

并在用户控件 cs 页面中添加以下代码:

and add this following code in the user control cs page:

private System.Delegate _delNoParam;
    public Delegate PageMethodWithNoParamRef
    {
        set { _delNoParam = value; }
    }

    protected void Button1_Click(object sender, EventArgs e)
    {
        _delNoParam.DynamicInvoke();
    }

点击用户控制页面中的Button1，会触发aspx页面中的Page_prerender()，即父页面.

When click on the Button1 in user control page, the Page_prerender() in aspx page, which is parent page, will be trigger.

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