c# - 向按钮添加新事件

Question

protected void Page_Load(object sender, EventArgs e)
{
        Button a = new Button();
        a.Width = 100;
        a.Height = 100;
        a.Text = "one";
        a.Click += new EventHandler(test);
        form1.Controls.Add(a);        
}

protected void test(object sender, EventArgs e)
{
    Button b = new Button();
    b.Width = 100;
    b.Height = 100;
    b.Text = "two";
    b.Click += new EventHandler(test2);
    form1.Controls.Add(b );
    Response.Write("aaaaaaaaaaaaaaaaaa");
}


protected void test2(object sender, EventArgs e)
{
    Response.Write("bbbbbbbbbbbbbbb");
}

当点击 one 时显示 Button two 但当点击 two 按钮时不运行 test2？ ？？当点击两个页面时刷新。

我想先点击“一”，然后点击“二”仅在单击按钮 a 后显示按钮

Answer 1

试试这个:

protected void Page_Init(object sender, EventArgs e)
{
    Button a = new Button();
    a.Width = 100;
    a.Height = 100;
    a.Text = "one";
    a.Click += new EventHandler(test);
    form1.Controls.Add(a);

    Button b = new Button();
    b.Visible = false;
    b.Width = 100;
    b.Height = 100;
    b.Text = "two";
    b.Click += new EventHandler(test2);
    form1.Controls.Add(b);
}

protected void test(object sender, EventArgs e)
{
    b.Visible = true;
    Response.Write("aaaaaaaaaaaaaaaaaa");
}


protected void test2(object sender, EventArgs e)
{
    Response.Write("bbbbbbbbbbbbbbb");
}