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动态控件在我点击它后就消失了,为什么会发生这种情况,以及如何解决这个问题。动态创建的控件在点击时消失点击
protected void Page_Load(object sender, EventArgs e)
{
/*DropDownList1_SelectedIndexChanged(sender, e);
Label1.Text += "<br/>huh?";
Label1.Text = MapPath("dawd");*/
}
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
//PlaceHolder1.Controls.Clear();
for (int i = 0; i < DropDownList1.SelectedIndex + 1; i++)
{
CheckBox cb = new CheckBox();
cb.AutoPostBack = true;
cb.CheckedChanged += new EventHandler(cb_CheckedChanged);
PlaceHolder1.Controls.Add(cb);
PlaceHolder1.Controls.Add(new LiteralControl("<br/>"));
}
}
void cb_CheckedChanged(object sender, EventArgs e)
{
//DropDownList1_SelectedIndexChanged(sender, e);
Label1.Text += "<br/>adsd";
//throw new NotImplementedException();
}
欢呼声,JAF
是的,但我希望它只在从下拉列表中选择时创建,如何 – user434753 2010-09-03 08:16:19
@ jbs135 - 就像你做的那样。但是,如果稍后的按钮/链接点击意味着它们消失(因为它们不会被重新创建),请不要感到惊讶。 – Oded 2010-09-03 08:30:18