Spread for ASP.NET 18 Product Documentation

CallBackStart

Occurs just before the Spread component makes a request to the ASPX page.

Syntax

[Inline HTML]

<ELEMENT CallBackStart = "handler" ...>

[JavaScript]

FpSpread1.addEventListener("CallBackStart", handler, ...)

FpSpread1.onCallBackStart = handler

Arguments

event.cancel

Whether to cancel the callback request

event.async

Asynchronous or not

event.command

Command name of the callback

Return Type

None

Remarks

This event is triggered when there is a request to the ASPX page.

If the cancel argument is set to true, the request is canceled.

Example

This example JavaScript code maps the event for the Spread on the client side. Set ClientAutoCalculation to True for the Spread component in Page Load and type in a cell at run time to see the alerts in the client side code.

<script lang="javascript" type="text/javascript">
window.onload = function () {
var spread1 = document.getElementById("<%=FpSpread1.ClientID %>");
if (document.all) {
// IE
   if (spread1.addEventListener) {
     // IE9
     spread1.addEventListener("CallBackStart", CallBackStart, false);
     spread1.addEventListener("CallBackStopped", CallBackStopped, false);
      } else {
     // Other versions of IE and IE9 quirks mode (no doctype set)
      spread1.onCallBackStart = CallBackStart;
      spread1.onCallBackStopped = CallBackStopped;
      }
}
      else {
      // Firefox
      spread1.addEventListener("CallBackStart", CallBackStart, false);
      spread1.addEventListener("CallBackStopped", CallBackStopped, false);
     }
   }
    
   function CallBackStart(event) {
     if (event==null) event = window.event;
        alert("start");
     }
   
   function CallBackStopped(event) {
      alert("stop");
   }
</script>