删除动态生成的选定按钮

Question

我用 C# 开发了一个 winform 应用程序。我想在按钮单击时动态生成按钮，我们将其命名为“添加”。随机单击任何按钮，然后单击删除按钮，应删除所选按钮。现在我该怎么做？

这是我的动态按钮生成代码

---

public void AddNewButton()
{
    System.Windows.Forms.Button();
    Btn = new Button();
    this.Controls.Add(Btn);
    Btn.Name = textBox_code.Text + count;
    Btn.Location = new Point(50, 50);
    Btn.Text = textBox_code.Text;
    Btn.BackColor = Color.Red;
    Btn.ForeColor = Color.Blue;
    Btn.Click += new EventHandler(this.button_Click);
    count = count + 1;
    label1.Text = count.ToString();
    Btn.MouseDown += new MouseEventHandler(textbox_MouseDown);
    Btn.MouseMove += new MouseEventHandler(textbox_MouseMove);
    Btn.MouseUp += new MouseEventHandler(textbox_MouseUp);
}

---

用于删除按钮

private void button_delete_Click(object sender, EventArgs e)
{
    this.Controls.Remove(Btn);
    count = count - 1;
    label1.Text = count.ToString();
}

上面的代码只删除最后添加的按钮，而不是任何随机选择的按钮

Answer 1

添加一个变量来保存最后点击的按钮（在类级别）

Button lastClicked = null;
private void button_Click(object sender, EventArgs args) 
{
    ...
}

在你的button_Click 中添加这个，

private void button_Click(object sender, EventArgs args) 
{
    // whatever you already have...

    lastClicked = (Button)sender;
}

然后在您的删除按钮处理程序中，

private void button_delete_Click(object sender, EventArgs e)
{
    // delete the last clicked button
    this.Controls.Remove(lastClicked);
    count = count - 1;
    label1.Text = count.ToString();
}

Answer 2

您没有解释如何选择要删除的按钮，而是使用按钮名称作为一般答案，而不是

this.Controls.Remove(Btn);

怎么样

foreach (Control c in this.Controls)
{
     if (c.Name == "Name of button to delete")
     {
           this.Controls.Remove(c);
           break;
     }
}

编辑

好的，你确实解释了这个过程。然后一种方法是有一个变量来存储最后点击的按钮：

Button btnLastClicked;

然后在 button_Click 事件处理程序中，执行以下操作：

btnLastClicked=sender as Button;

最后，

private void button_delete_Click(object sender, EventArgs e)
{
    this.Controls.Remove(btnLastClicked);
    count = count - 1;
    label1.Text = count.ToString();
}