删除动态创建的控件C＃ [英] removing dynamically created controls C#

问题描述

我有一个程序，增加了一系列的光点的一个图。我怎么有一个按钮清除所有已与该code创建的光点的？

I have a program that adds a series of "blips" to a graph. How do I have a button clear all of the "blips" that have been created with this code?

                        PictureBox blip = new PictureBox();
                        blip.Location = new Point(blipHours, blipAltitude);
                        blip.Size = new Size(6, 6);
                        blip.BackColor = System.Drawing.Color.Lime;
                        blip.Text = "";
                        blip.Name = callsign;
                        this.Controls.Add(blip);
                        this.Controls.SetChildIndex(blip, 0);

我的问题的另一部分：看到我命名为每昙花一现的呼号。有没有办法来改变昙花一现的背景颜色时，它的名字是等于特定的呼号？每一个光点与在列表框中选择相关的，我想拥有它改变光点的颜色，当用户选择它。

The other part of my question: See that I have named each blip with "callsign." Is there a way to change a blip's background color when it's name is equal to a certain callsign ? Each blip is associated with a selection in a listbox, and I would like have it change the blips color when that user selects it.

推荐答案

每个人都忘记了一个的非常的重要细节：你要的Dispose（）的控制，否则将永远泄漏：

Everybody is forgetting a very important detail: you have to Dispose() the control or it will leak forever:

for (int ix = this.Controls.Count - 1; ix >= 0; ix--)
  if (this.Controls[ix] is PictureBox) this.Controls[ix].Dispose();

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