When you are running your asp.net website (.net 3.5) in IE10 with some ImageButton-s together with the ScriptManager, you might have a chance in triggering the following error:
Sys.WebForms.PageRequestManagerServerErrorException input string was not in a correct format
To resolve this, you need to add the following script after the end of the "Form" HTML tag.
<script type="text/javascript">
Sys.WebForms.PageRequestManager.getInstance()._origOnFormActiveElement = Sys.WebForms.PageRequestManager.getInstance()._onFormElementActive;
Sys.WebForms.PageRequestManager.getInstance()._onFormElementActive = function (element, offsetX, offsetY) {
if (element.tagName.toUpperCase() === 'INPUT' && element.type === 'image') {
offsetX = Math.floor(offsetX);
offsetY = Math.floor(offsetY);
}
this._origOnFormActiveElement(element, offsetX, offsetY);
};
</script>
For more details, please read the following URL:
http://stackoverflow.com/questions/13299685/ie10-sending-image-button-click-coordinates-with-decimals-floating-point-values
