我,访问的Silverlight的ObservableCollection在JavaScript算,但我得到了下面的错误,的Javascript观察集合数
Microsoft JScript runtime error: System.FormatException: Input string was not in a correct format.
at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info)
at System.String.System.IConvertible.ToInt32(IFormatProvider provider)
at System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)
at System.Windows.Hosting.ScriptingInterface.GetScriptParamValueForType(ScriptParam scriptParam, Type desiredType)
at System.Windows.Hosting.ScriptingInterface.ConvertFromScriptParams(Type[] desiredTypes, ScriptParam[] args)
at System.Windows.Browser.ManagedObjectInfo.ListIndexerMember.Invoke(ManagedObject obj, InvokeType invokeType, ScriptParam[] args)
at System.Windows.Browser.ManagedObjectInfo.Invoke(ManagedObject obj, InvokeType invokeType, String memberName, ScriptParam[] args)
at System.Windows.Hosting.ManagedHost.InvokeScriptableMember(IntPtr pHandle, Int32 nMemberID, Int32 nInvokeType, Int32 nArgCount, ScriptParam[] pArgs, ScriptParam& pResult, ExceptionInfo& pExcepInfo)
我用下面的代码,其中儿童是自定义对象的的ObservableCollection,
reg.OnDropping = function (sender, args) {
if (args.toItem.Children.Count > 0) {
args.cancel = true;
}
else {
args.cancel = false;
}
}
是否有任何其他方式来访问Javascript中的计数?
问候, KARTHIK
为了访问Count属性是不是会还需要一个ScriptableMember呢? – AnthonyWJones 2011-06-09 08:59:06
你是对的@AnthonyW琼斯。在这种情况下,如上所述,向课堂添加一个属性更合适。谢谢 – 2011-06-09 09:03:39