Selecting Elements In Usercontrol Using JavaScript?
Mar 16, 2011
I have a web form that contains a usercontrol and I would like to be able to access the html elements within the usercontrol from the form page using javascript.
I tried the following:
document.getElementById('<%= usercontrol.clientid %>')
but this returned null.
I had a look around with firebug and found that the tags in the usercontrol render with clientids like usercontrolid_myelement. I'm guessing that something like this might work:
document.getElementById('<%= usercontrol.clientid %>'+'_myelement')
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Mar 3, 2011
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Mar 26, 2010
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Oct 7, 2010
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function filterVehicleTypes() {
var masterStore = Global.getComponent("vehicleTypeStore").getStore();
var Source = Global.getComponent("ddlValuationSource").getRawValue();
var isIncuded = '';
var IncludeFlags = '';
if (Source == undefined || Source == null)
Source = '';
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masterStore.each(function(rec) {
switch (Source.toUpperCase()) {
case 'KBB':
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case 'NADA':
IncludeFlags = rec.get('MiscCode1');
if (IncludeFlags != null) {
isIncuded = IncludeFlags.substr(1, 1);
if (isIncuded == 'Y' && rec.get('Code') == 'NADA') {
Global.getComponent("ddlVehicleType").store.add(rec);
}
}
break;
default:
IncludeFlags = rec.get('MiscCode1');
if (IncludeFlags != null) {
isIncuded = IncludeFlags.substr(0, 1);
if (isIncuded == 'Y') {
Global.getComponent("ddlVehicleType").store.add(rec);
}
}
break;
}
});
}
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Error: Sys.WebForms.PageRequestManagerServerErrorException: Object reference not set to an instance of an object.
JS
<script type="text/javascript">
function validate() {
var flag = true;
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[Code] ......
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Server Error in '/bramandam site' Application. Invalid postback or callback argument. Event validation is enabled using <pages enableEvent Validation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.ArgumentException: Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
[ArgumentException: Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager. Register For EventValidation method in order to register the postback or callback data for validation.]
[code]....
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[Code].....
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[code]...
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Jan 10, 2011
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Nov 24, 2010
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Oct 20, 2010
I've searched high and low for some resolution to this problem. Hopefully someone here can explain!!I create a usercontrol that uses .NET web controls, but I want to create a smoother user experience by avoiding full postbacks, so I write some JQUERY to capture click events on the client and in this way do the processing without going back to the server.
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var value1 = $(this).closest("tr").find("td.invoiceAmount").html();
var value2 = $('#<%=hdnTotalToPay.ClientID%>').html();
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[code]...
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Jul 28, 2010
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Oct 25, 2010
I have a javascript embedded in my extended gridview control that reference the grid control. Example:
[Code]....
HTML code:
[Code]....
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