您可以使用 jQuery AJAX 调用轻松地做到这一点。
ASPX
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1/themes/ui-lightness/jquery-ui.css" type="text/css" />
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.10.3/jquery-ui.min.js"></script>
<script type="text/javascript">
$(document).ready(function () {
$('body').on('click', '.performsMyClickAction', function () {
$.ajax({
type: "POST",
url: "BlogPost.aspx/TestIP",
data: "{}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (result) {
if (result.d = 1) //In use
{
$("<div>State your confirm message here.</div>").dialog({
resizable: false,
height: 210,
modal: true,
buttons: {
"Ok": function () {
__doPostBack('<%= upnl.ClientID %>', 'InUse ');
$(this).dialog("close");
},
"Cancel": function () {
$(this).dialog("close");
}
}
});
} else {
__doPostBack('<%= upnl.ClientID %>', 'NotInUse ');
}
}
});
});
});
</script>
<body>
<form id="form2" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" />
<asp:UpdatePanel ID="UpdatePanel1" runat="server" OnLoad="upnl_Load">
<ContentTemplate>
<div>
<asp:Button CssClass="performsMyClickAction" Text="Test IP" ID="Button3" runat="server" />
</div>
</ContentTemplate>
</asp:UpdatePanel>
</form>
</body>
C#
protected void upnl_Load(object sender, EventArgs e)
{
string eventTarget = (this.Request["__EVENTTARGET"] == null) ? string.Empty : this.Request["__EVENTTARGET"];
if (string.IsNullOrEmpty(eventTarget)) return;
var arg = Request.Params.Get("__EVENTARGUMENT");
if (arg == null) return;
if (!string.IsNullOrEmpty(arg.ToString()))
{
if (arg.ToString().IndexOf("InUse") > -1)
{
//Call C# function for in use.
}
if (arg.ToString().IndexOf("NotInUse") > -1)
{
//Call C# function for not in use.
}
}
}
[WebMethod]
public static string TestIP()
{
//Check for IP status
if (true)
return "1";
//else
//return "0";
}
希望这会帮助你。