如何访问C＃面板中的控件 [英] How to access controls that is in the panel in c#

问题描述

我在c＃winforms中使用一个面板，并使用循环将图片框的编号填充到面板中

I use a panel in c# winforms and fill the panel with the no of picture box using loop

例如，面板名称为panal

For example, panel name is panal

foreach (string s in fileNames)
{            
    PictureBox pbox = new new PictureBox();
    pBox.Image = Image.FromFile(s);
    pbox.Location = new point(10,15);
    .
    .
    .
    .
    this.panal.Controls.Add(pBox);
}

现在我想用另一种方法更改图片框的位置。
问题是现在我该如何访问图片框，以便更改它们的位置。
我尝试使用以下方法，但并非成功。

now I want to change the location of picturebox in another method. The problem is that how can now I access the pictureboxes so that I change the location of them. I try to use the following but it is not the success.

foreach (Control p in panal.Controls)
                if (p.GetType == PictureBox)
                   p.Location.X = 50;

但是有错误。错误是：

System.Windows.Forms.PictureBox' is a 'type' but is used like a 'variable'

推荐答案

本节中似乎有一些错别字（可能

There appear to be some typos in this section (and possibly a real error).

foreach (Control p in panal.Controls)
                if (p.GetType == PictureBox.)
                   p.Location.X = 50;

错别字是

1. PictureBox之后是句点（。）


2. GetType缺少括号（因此未调用）。

错误是：

• 您无法比较 p 到PictureBox，则需要将其与PictureBox的类型进行比较。

• You can't compare the type of p to PictureBox, you need to compare it to the type of PictureBox.

这应该是：

foreach (Control p in panal.Controls)
   if (p.GetType() == typeof(PictureBox))
      p.Location = new Point(50, p.Location.Y);

或者简单地：

foreach (Control p in panal.Controls)
   if (p is PictureBox)
      p.Location = new Point(50, p.Location.Y);

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