Spread ASP.NET 14
Spread for ASP.NET 14 Product Documentation / Client-Side Scripting Reference / Scripting Members / Events / CallBackStart
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    CallBackStart
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    Occurs just before the Spread component makes a request to the ASPX page.

    Syntax

    [Inline HTML]

    <ELEMENT CallBackStart = "handler" ...>

    [JavaScript]

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

    or

    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.

    JavaScript
    Copy 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>
    
    See Also