SCRIPT5022: Sys.ArgumentOutOfRangeException: Value must be an integer.
Parameter name: (x or y)
Actual value was (some floating point value)
ScriptResource.axd, line … character …

Often it come up when you use some 3rd party libraries, Telerik or Infragistics (in my case it happened in WebDataMenu control).

Here why it happens. Actual error happens in Sys.UI.Point class. In its constructor it expects 2 parameters – x and y. If you trace the callstack you will see that these values are provided to the class by a preceding call to browser’s intrinsic function getBoundingClientRect(). In previous versions of IE it returned Integer values. But in IE10 values are floating point.

Now if you’re using older version of .NET Framework (e.g. 3.5 or below) you’ve got a problem. Sys.UI.Point class expects parameters to be strictly Integer. Since IE10 provides fractionals – error shown above is thrown.

There could be other incompatibilities, so the only real, non-hacky solution, well – upgrade your project to a more recent version of .NET framework (4.5 at the time of this post).

If upgrading is not possible and you’re willing to accept the risk of a hack – include following function into your page:

Sys.UI.Point = function Sys$UI$Point(x, y) {

    x = Math.round(x);
    y = Math.round(y);

    var e = Function._validateParams(arguments, [
        {name: "x", type: Number, integer: true},
        {name: "y", type: Number, integer: true}
    ]);
    if (e) throw e;
    this.x = x;
    this.y = y;
}

This function will replace original one and the only addition is rounding of incoming parameters.

But what prevents you from logging into Skydrive Website directly from a mobile Web browser?

After authorizing yourself with security code you’re in! Albeit this is not as convenient as a native app would be, but until “design” changes this approach allows you to access your PC’s files without installing any additional software on the PC and without downloading any additional app to the device.

It could be accompanied by inner errors

Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request

or more generic

Object Reference not set

In this particular scenario WHDG uses manual LoadOnDemand for to populate children (i.e. RowIslandPopulating event is used) and parent grid is sorted by one or more columns. Error is happening when attempting to expand second child or a grandchild.

Chances are you’re manually populating SortedColumns collection of the parent grid:

For '..some loop condition
   xMyGrid.Behaviors.Sorting.SortedColumns.Add() '...adding to SortedColumns
Next

If so – the errors mentioned above happen because this code is called on page postback. To avoid them just check for the postback and if it is happening skip the code:

If Not IsPostBack Then 'Don't do this on PostBack
   For '..some loop condition
         xMyGrid.Behaviors.Sorting.SortedColumns.Add() '...adding to SortedColumns
   Next
End If

It is possible that you absolutely must execute this code on some postbacks. Then you only need to skip it when Child RowIsland is being populated and execute it on all other postacks. It is possible with AJAX callback detection. If you use function from that post then the code for skipping sorting will become:

If GetGridAjaxCallType() <> GRID_AJAX_CALL_TYPE.CHILD_POPULATING Then
   For '..some loop condition
         xMyGrid.Behaviors.Sorting.SortedColumns.Add() '...adding to SortedColumns
   Next      
End If

Using this approach grid’s SortedColumns collection will be updated in all the cases *but* when child is populating, effectively preventing errors from happening.

<ig:WebDataMenu ID="xwdmMyMenu" runat="server">
   <ItemSettings CssClass="MenuItem" HoverCssClass="MenuItemHover"/>
</ig:WebDataMenu>

This markup can correspond to CSS classes, for example:

.MenuItem {
   background-image:none;
   background-color:white;
}

.MenuItemHover{
   background-color:rgb(213,224,198);
}

This works fine in most cases, but since the hover/unhover is done via JavaScript sometimes there’re issues.

One particular issue I encountered – if this is a context menu, on “showAt” call the first item is always hovered – which can be pretty annoying. There’re other issues as well, so instead of diggin’ dip into JavaScript, trying to overwrite some default behaviors I decided to keep it simple and let CSS do its thing.

If we modify the above HTML markup by removing hovered CSS class property completely:

<ig:WebDataMenu ID="xwdmMyMenu" runat="server">
   <ItemSettings CssClass="MenuItem" />
</ig:WebDataMenu>

And replace hover class in CSS definitions with pseudo-class:

.MenuItem {
   background-image:none;
   background-color:white;
}

.MenuItem:hover{
   background-color:rgb(213,224,198);
}

We will achieve the same hover effect without nasty side-effects.

In most cases culprit is invalid XML data passed to the engine. And while Flash is more forgiving, JavaScript requires strict valid XML. Most often the cause for the issue are characters invalid in XML. Check your data and if they contain following characters – replace them with their encoded values:

" (quote) --> "
' (apostrophe) --> '
< (less sign) --> &lt;
> (greater sign) --> &gt;
& (ampersand)  --> &amp;

And the error will disappear.

Happy charting!

• SelectedIndexChanged – fires after user has changed the tab to provide ways to interact with newly selected tab
• SelectedIndexChanging – fires before user has changed the tab to provide ways to interact with currently selected tab and to give user a chance to cancel change.

Both work fine if user manually changes tabs by clicking on tab headers, but call to client-side set_selectedIndex() function (which changes tabs programmaticaly) only fires SelectedIndexChanged, skipping SelectedIndexChanging altogether. But there’s a way to make it work.

Here’s a basic stub for SelectedIndexChanging event handler:

function xMyTab_SelectedIndexChanging(sender, eventArgs) {

   if (/* some condition is not met */)  {
      alert('You cannot switch tabs at this time');
      eventArgs.set_cancel(true);
      return false;
   }
   
   /* Perform some processing on the current tab before switching */ 
   
}

Lines Lines 3-7 can perform some validation (required text not entered, process is still going on) and if validation is not passed – cancel the tab selection (Line 5: eventArgs.set_cancel(true);). If validation is passed – we can continue processing current tab before switch to the new one.

Again, this works fine when user manually changes tabs by clicking on them. But let’s say you have a custom function:

function myTabChange(i_iTabIndex) {
   var oTab = $find('xMyTab');
   oTab.set_selectedIndex(i_iTabIndex)
}

It accepts Tab Index and selects it by calling set_selectedIndex function of the Tab control. It works fine, but unfortunately SelectedIndexChanging event is not firing, so there’s no way to perform those validations or pre-processing. But there’s a way to implement it (and avoid copy-pasting lots of code). Let’s modify our event handler stub just a little:

function xMyTab_SelectedIndexChanging(sender, eventArgs) {

   if (/* some condition is not met */)  {
      alert('You cannot switch tabs at this time');
      if (eventArgs) eventArgs.set_cancel(true);
      return false;
   }
   
   /* Perform some processing on the current tab before switching */ 
   
   return true

}

We added a line to call eventArgs.set_cancel only if eventArgs argument is passed to the event handler function; and the last line that returns true after successful validation and processing the code. With this change we can modify our custom function like this:

function myTabChange(i_iTabIndex) {
   var oTab = $find('xMyTab');
   if (xMyTab_SelectedIndexChanging(oTab) == false) return;
   oTab.set_selectedIndex(i_iTabIndex)
}

Line 3 that we added calls the same event handler function, but without passing eventArgs parameter. Our modified handler detects this and if its validation fails returns false. This will effectively cancel tab change in our custom function. After successful validation true will be returned and the tab change will proceed.

If the event handler is called normally – via user click – eventArgs parameter will be passed and handler will perform as before.

Everybody heard the story of how town of Santa Clara, CA is now offering all of its resident free Wi-Fi. It’s a really good news and hopefully a beginning of a trend. But a small borough in Northern New Jersey went even further.

Everybody knows how unreliable Wi-Fi could be. An tall building here, an interference there and your connection bars disappear. Despite recent advances in Wi-Fi technology (for example emerging 802.11ac standard) nothing really beats wired connection.

The authorities of Honest Meadow, NJ came to a brilliant realization. We already have a perfect distribution net that leads to every house in town – the power grid! There’s no cost to lay in additional cables or perform specific wiring inside or outside the house. And the cost saving can be passed to the residents, at a very attractive monthly price of … free! All they have to do is purchase (for a nominal fee) a small adapter from the local utility company, plug that adapter into wall outlet – and bingo! instant wired Ethernet connection.

As an added bonus – electric wiring is capable of a much higher throughput comparing to traditional phone lines, coax cables and even fiber. Thus an unheard of before speed of 1GBps is now available to all people in Honest Meadow.

The town is already know for its peaceful, quiet neighborhoods and a great school system. If you needed another reason to move in there – you just got one.

Happy surfing!

The method below utilizes ADO.NET/VB.NET to build XML for chart data, but similar approach can be easily used in other languages/technologies.

Consider the following ADO.NET DataTable, called dtChartData:

               Login Failure  Login Success
-------------- -------------- -------------
2013-03-27     1              69
2013-03-26     0              32
2013-03-25     1              86
2013-03-22     0              11

It holds data for number of successful/unsucessful logins for a given date. We want to display this data as a Bubble chart with dates displayed on X-Axis.

Take a look at the following code snippet:

Dim sbXmlChartSeriesData As New StringBuilder

sbXmlChartSeriesData.Append("<categories>")

'Looping thru the first column, creating categories and X-Axis labels and values
For J As Integer = 0 To dtChartData.Rows.Count - 1
   sbXmlChartSeriesData.AppendFormat("<category label='{0}' x='{1}' showVerticalLine='1' />", dtChartData.Rows(J)(0)), J + 1)
Next

sbXmlChartSeriesData.Append("</categories>")

'Datasets - from the rest of the columns row by row
For I As Integer = 1 To dtChartData.Columns.Count - 1
   sbXmlChartSeriesData.AppendFormat("<dataset seriesName='{0}' >", dtChartData.Columns(I).ColumnName)

   For J As Integer = 0 To dtChartData.Rows.Count - 1
      sbXmlChartSeriesData.AppendFormat("<set y='{0}' x='{1}' ", dtChartData.Rows(J)(I), J + 1)
      sbXmlChartSeriesData.AppendFormat("z='{0}' ", i_dtChartData.Rows(J)(I))
      sbXmlChartSeriesData.Append("/>")
   Next

   sbXmlChartSeriesData.Append("</dataset>")
Next

Here we’re using a StringBuilder object to effectively build string with XML data

Lines 3-10 Build categories section of XML data. Note Line 7 -we use 1st column data (that contains dates) as a category label – that value will be displayed on the X-Axis. For a mandatory numeric X value we use row index, but that value will never be displayed since it will be overwritten by labels.

Lines 12-23 build dataset sections of the XML file. DataTable’s Column name is used for Series name (Line 14). Line 17 sets Y value to actual column value for current row and X value again to row index to match the X in the Categories section. Note Line 18: For Bubble chart this example reuses Y value for Z value (so the higher up Y-Axis the bubble, the bigger its radius will be), but you’re free to modify it to suit your requirements.

This code produces nice XML data that you can plug into your chart’s main XML:

<categories>
   <category label='2013-03-27' x='1' showVerticalLine='1' />
   <category label='2013-03-26' x='2' showVerticalLine='1' />
   <category label='2013-03-25' x='3' showVerticalLine='1' />
   <category label='2013-03-22' x='4' showVerticalLine='1' />
</categories>

<dataset seriesName='Login Failure' >
   <set y='1' x='1' z='1' />
   <set y='0' x='2' z='0' />
   <set y='1' x='3' z='1' />
   <set y='0' x='4' z='0' />
</dataset>

<dataset seriesName='Login Success' >
   <set y='69' x='1' z='69' />
   <set y='32' x='2' z='32' />
   <set y='86' x='3' z='86' />
   <set y='11' x='4' z='11' />
</dataset>

After adding attributes to main chart element to limit X-Axis values to xAxisMinValue='0' and xAxisMaxValue='" & dtChartData.Rows.Count + 1 & "'" – a beautiful chart is produced:

With X-Axis displaying non-numeric data – in this case dates.

After a very easy setup:

It’s a beautiful sight.

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