如题,点击刷新是可以更新的,但是不能自动更新,不知道哪里有问题?<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>Timer Messages</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="sm1" runat="server" />
<asp:Timer ID="Timer1" Interval="5000" runat="server" />
<asp:UpdatePanel ID="up1" runat="server">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
</Triggers>
<ContentTemplate>
Last Refresh <%= DateTime.Now.ToString("T") %>
<asp:gridview
id="grdview1"
DataSourceID="srcMessages"
Runat="server" />
<asp:sqldatasource
id="srcMessages"
connectionstring='<%$ connectionStrings:con %>'
selectcommand="select * from message"
Runat="server" /> </ContentTemplate>
</asp:UpdatePanel>
</div>
</form>
</body>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>Timer Messages</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="sm1" runat="server" />
<asp:Timer ID="Timer1" Interval="5000" runat="server" />
<asp:UpdatePanel ID="up1" runat="server">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
</Triggers>
<ContentTemplate>
Last Refresh <%= DateTime.Now.ToString("T") %>
<asp:gridview
id="grdview1"
DataSourceID="srcMessages"
Runat="server" />
<asp:sqldatasource
id="srcMessages"
connectionstring='<%$ connectionStrings:con %>'
selectcommand="select * from message"
Runat="server" /> </ContentTemplate>
</asp:UpdatePanel>
</div>
</form>
</body>
</html>
GridView1.DataBind();
//updatePanel也更新一下试试
this.up1.Update()
GridView.DataBind();
加上 DataBind() 就可以了
我通过update panel和trigger更新,不知道该在哪里重新绑定呢?
在里面写
GirdView1.datasouce=;
Gridview1.databind();
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server"> protected void Timer1_Tick(object sender, EventArgs e)
{
gridview1.DataBind();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>Timer Messages</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="sm1" runat="server" />
<asp:Timer ID="Timer1" Interval="5000" runat="server" ontick="Timer1_Tick" />
<asp:UpdatePanel ID="up1" runat="server">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
</Triggers>
<ContentTemplate>
Last Refresh <%= DateTime.Now.ToString("T") %>
<asp:gridview
id="gridview1"
DataSourceID="srcMessages"
Runat="server" />
<asp:sqldatasource
id="srcMessages"
connectionstring='<%$ connectionStrings:con %>'
selectcommand="select * from message order by id desc"
Runat="server" />
</ContentTemplate>
</asp:UpdatePanel>
</div>
</form>
</body>
</html>