无法在业务层中找到页面面板 [英] unable to find panel of page in business layer

问题描述

我无法在业务层的页面''头部中找到面板.
以下是我的代码:

Hi ,
im unabel to find panel in page''head section in business layer.
following is my code :

public void SetPageDetails(Page pg)
        {
            PlaceHolder meta = pg.FindControl("MetaPlaceHolder") as PlaceHolder;
         }

我将meta设为null；

im getting meta as null;

推荐答案

如果您从
获取null

If you get null from

pg.FindControl("MetaPlaceHolder") as PlaceHolder

，那么FindControl不会找到任何名为"MetaPlaceHolder"的控件，或者找到的控件不是PlaceHolder或从PlaceHolder派生.

您需要拆分该语句，然后通过调试找出该语句...

Then either FindControl does not locate any control called "MetaPlaceHolder", or the control it does find is not a PlaceHolder, or derived from a PlaceHolder.

You need to split the statement, and find out which by debugging...

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