在我的程序中生成按钮之前,应该使用以下方法清除它们:
for (int i = 0; i < buttons.Length; i++)
this.Controls.Remove(buttons[i]);
但是,上一代的所有按钮都保留了下来。这可能是什么原因造成的?
(下面是整个函数,其他函数中numButton的变化。)
int numButtons = 5;
Button[] buttons = new Button[10];
private void generate_buttons()
{
for (int i = 0; i < buttons.Length; i++)
{
this.Controls.Remove(buttons[i]);
}
for (int i = 0; i < numButtons; i++)
{
buttons[i] = new Button();
buttons[i].Name = "btn" + i.ToString();
buttons[i].Text = Convert.ToString(i + 1);
buttons[i].Size = new Size(40, 24);
int yOffset = 40;
int xOffset = 20 + i * 42;
buttons[i].Location = new Point(xOffset, yOffset);
buttons[i].BackColor = System.Drawing.SystemColors.Control;
buttons[i].Enabled = false;
buttons[i].Click += new EventHandler(this.clickMe);
buttons[i].Visible = true;
this.Height = yOffset + 104;
this.Width = xOffset + 75;
}
Controls.AddRange(buttons);
}