如何使用for循环可见面板控件 [英] how to visible panel control using the for loop

问题描述

所有。



i am anil ..我在按钮点击时可视面板控制面临问题..



im在块中传递一个int值..





我的代码是

< br $> b $ b

  int  block = Convert.ToInt32（Label4.Text）; 
 
  for （ int  i =  1 ; i <  = block; i ++）
 {
 
 Panel rpt_panel =  new  Panel（）; 
 
 rpt_panel.ID =   pnlblock + i.ToString（）; 
 rpt_panel.Visible =  true ; 
 
 
} 

帮帮我PLZ ..

谢谢提前

解决方案

这些是 新 面板：因此关键字 new 。

您不会将它们附加到任何Controls集合，因此您根本不显示它们。

仅仅创建一个控件是不够的：你需要将它添加到你的页面或表单...

这段代码看起来没问题，但我认为你需要在页面上添加这个面板，使用一些占位符或其他东西。




你的代码中的
我可以看到你从代码中生成一个控件，你需要将它添加到页面中。有一些方法可以添加控件到页面。



page.controls.add（panlel）;



或者可能在面板或占位符内

您正在创建一个新面板并使其可见。



如果您已经有面板并希望将其显示，请使用：

面板rpt_panel = Page.FindControl（  pnlblock + i.ToString（））; 

hii all.

i am anil.. i m facing a problem while to visible panel control on button click..

i m passing a int value in block..


my code is

int block = Convert.ToInt32(Label4.Text);

for (int i = 1; i <= block; i++)
{

    Panel rpt_panel = new Panel();

    rpt_panel.ID = "pnlblock" + i.ToString();
    rpt_panel.Visible = true;


}

help me plz..
thanks in advance

解决方案

Those are new panels: hence the keyword new.
You do not attach them to any Controls collection, and so you don't display them at all.
Just creating a control is not enough: you need to add it to your page or form as well...

this code looks okay but i think you need to add this panel on the page by using some place holder or something.


from your code i can see that you are generating a control from the code and you need to add it to the page . there are some methods by which you can add controls to the page.

page.controls.add(panlel);

or may be inside a panel or placeholder

You are creating a new panel and making it visible.

If you already have the panel and want to make it visible, then use:

Panel rpt_panel = Page.FindControl("pnlblock" + i.ToString());

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