Javascript error while transferring elements

[SHERFUDEEN]

Hi,

We are facing a strange issue with List box recently. We have a list box in our application for assigning the users to some groups. We wrote the server transfer event for transferring the user because while transferring the user we need to check some condition in the back end. It is working fine for last 2 years. Recently when we transfer the user to the destination list box, it is giving following java script error and transferring functionality is not working. 

"Uncaught Sys.WebForms.PageRequestManagerServerEroorException: Sys.WebForms.PageRequestManagerServerEroorException:
511.8182 is not a valid value for Int32"

(Attached Image)

the value is not always 511.8182. It is variable.

this issue is coming in Chrome browser only and in some systems only.

We didn't update any telerik dll recently.

[Dimitar Terziev]

Hello,

This is an issue introduced with the latest version of the Chrome browser, the scroll position is now reported as a floating point number. Here is a link to the feedback item in our public portal, giving information when this will be fixed and the possible workarounds for the different controls affected by this change.

Regards,
Dimitar Terziev
Telerik

 

 

[SHERFUDEEN]

Thanks for your reply.

I added the Java script in the Master page of my application. But I am getting the error "Uncaught TypeError: Cannot read property 'prototype' of undefined ".

I changed the code as

$(Telerik.Web.UI.RadListBox).prototype.saveClientState =funtion(){
// code
}
Now I am getting
" Uncaught TypeError: Cannot set property 'saveClientState' of undefined (anonymous function)" Error

How can I solve this?

[Dimitar Terziev]

Hello,

The correct syntax is the following:

<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>

Regards,
Dimitar Terziev
Telerik

 

 

[SHERFUDEEN]

Hi

I copied and pasted the code, in my page but not succeeded. 

I placed the code after RadScriptManager, then I am getting the following error  (Capture1.png, Capture2.png)
     "UnCaught TypeError: Cannot read property 'prototype' of undefined" 

Then I placed the code before RadScriptManager, then I am getting the following error (Capture3.png, Capture4.png)
      "UnCaught ReferenceError: Telerik is not defined" 

Please check the attached the screenshots.

How can I solve this?

[Dimitar Terziev]

Hi,

Attached is a sample page with the override applied.

Regards,
Dimitar Terziev
Telerik

 

 

[SHERFUDEEN]

Hi,
Thanks for the reply.

Actually, I placed the code in my master page. So it is giving error if the child page doesn't contians RadListBox.

So I fixed the issue with the following work around.

if (Telerik.Web.UI.RadListBox != undefined) {
                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) +
                           "}";
                }
            }


Thanks