Ajax定时器:只执行5次
问题描述:
我有一个ajax Timer控件。它将“+”添加到标签的文本值。这个计时器只能工作五次,间隔时间为“1000”,即只有五个“+”应该可用。之后,lblPostbackType 应该用计数更新。我如何实现它?Ajax定时器:只执行5次
public partial class _Default : System.Web.UI.Page
{
static int partialPostBackCount = 0;
protected void Page_Load(object sender, EventArgs e)
{
if (IsPostBack)
{
if (ScriptManager.GetCurrent(this).IsInAsyncPostBack)
{
partialPostBackCount = partialPostBackCount + 1;
lblPostbackType.Text = "Partial Postback:: " + partialPostBackCount.ToString();
}
else
{
lblPostbackType.Text = "Full Postback";
}
}
}
protected void Timer1_Tick(object sender, EventArgs e)
{
Label1.Text = Label1.Text + "+";
}
}
而设计的代码是
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" />
<asp:Timer runat="server" ID="Timer1" Interval="1000" OnTick="Timer1_Tick" />
<asp:Label runat="server" ID="lblPostbackType" >SAMPLE</asp:Label>
<asp:UpdatePanel runat="server" ID="TimePanel" UpdateMode="Conditional">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
</Triggers>
<ContentTemplate>
<asp:Label runat="server" ID="Label1" />
</ContentTemplate>
</asp:UpdatePanel>
</form>
感谢
答
试试这个
protected void Timer1_Tick(object sender, EventArgs e)
{
if (partialPostBackCount > 5)
{
lblPostbackType.Text = "Partial Postback:: " +
partialPostBackCount.ToString();
//Timer1.Enabled = false; //if you don't want it to continue
}
else
{
partialPostBackCount = partialPostBackCount + 1;
Label1.Text = Label1.Text + "+";
}
}
*静态变量,不建议..
保持Page_Load事件方法清洁..
你真的想回发到服务器只是为了添加一个'+'到标签?!学习javascript! ;) – 2012-01-09 17:11:51
我只是在学习Ajax。假设在实际情况下,我需要从服务器 – Lijo 2012-01-09 17:12:53
@Lijo得到一个值:请考虑选择答案,如果是的话。 – dotNETbeginner 2012-01-10 17:40:01