System.FormatException: Input string was not in a correct format error is thrown on Chrome when browser is zoomed in/out

[Telerik Admin]

When Chrome browser is zoomed in/out System.FormatException: Input string was not in a correct format error is thrown. This is an issue introduced with the latest version of Chrome browser (39.0.2171.71) which started setting the scroll position as a floating point number rather than an integer. The affected Telerik controls are: RadScheduler, RadListBox, RadTreeView. This problem has been addressed in the Q3 2014 SP1 release, but if you are currently unable to upgrade use the code snippet solutions below:

RadScheduler:

<script type="text/javascript">

       Telerik.Web.UI.RadScheduler.prototype.saveClientState = function () {

           return '{"scrollTop":' + Math.round(this._scrollTop) + ',"scrollLeft":' + Math.round(this._scrollLeft) + ',"isDirty":' + this._isDirty + '}';

       }
</script>

RadListBox:

<script type="text/javascript">
      Telerik.Web.UI.RadListBox.prototype.saveClientState = function () {
          return "{" +
          "\"isEnabled\":" + this._enabled +
          ",\"logEntries\":" + this._logEntriesJson +
          ",\"selectedIndices\":" + this._selectedIndicesJson +
          ",\"checkedIndices\":" + this._checkedIndicesJson +
          ",\"scrollPosition\":" + Math.round(this._scrollPosition) +
          "}";
      }
  </script>

RadTreeView:

<script type="text/javascript">
       Telerik.Web.UI.RadTreeView.prototype.saveClientState = function () {
           return "{\"expandedNodes\":" + this._expandedNodesJson +
           ",\"collapsedNodes\":" + this._collapsedNodesJson +
           ",\"logEntries\":" + this._logEntriesJson +
           ",\"selectedNodes\":" + this._selectedNodesJson +
           ",\"checkedNodes\":" + this._checkedNodesJson +
           ",\"scrollPosition\":" + Math.round(this._scrollPosition) + "}";
       }
   </script>

[Inian]

When I use this script block, ended up with "Uncaught ReferenceError: Telerik is not defined" in browser console.

[Inian]

Its working. Just pasted the script in main content of aspx. 

[Sailaja]

This logic for RadListBox is working for me too.. Pasted in aspx.. Thanks!

Telerik.Web.UI.RadListBox.prototype.saveClientState = function () {

                return "{" +
                    "\"isEnabled\":" + this._enabled +
                    ",\"logEntries\":" + this._logEntriesJson +
                    ",\"selectedIndices\":" + this._selectedIndicesJson +
                    ",\"checkedIndices\":" + this._checkedIndicesJson +
                    ",\"scrollPosition\":" + Math.round(this._scrollPosition) +
                    "}";

[Peter]

Hi all,

I experienced just now the same problem with RadTreeList

is there also a workaround for RadTreeList?

Regards, Peter

 

[Rumen]

Hi Peter,

We are not aware of this problem and I was unable to reproduce it in the live demo of RadTreeList: https://www.screencast.com/t/WQkCGipFE.

Are you able to replicate the issue in the live demo: http://demos.telerik.com/aspnet-ajax/treelist/examples/overview/defaultcs.aspx?

If not, can you please test your app with the latest version of the AJAX components: 2017.3.913?
If the problem still persists, please isolate it in and send a simple working project along with step-by-step instructions of how to reproduce it locally.

Regards,
Rumen
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