Hello,
I have a grid, client running mode, inside a Ajax UpdatePanel.
The grid has about 30 rows and 30 columns.

Some columns are freely writable by the user, some are "computed" and some other are hidden.
When the user changes a writable column, a client script updates both computed (recalculating their values) and hidden columns, using setValue client method behind the scenes.
So, there will be 4 more columns changed per user edit.

If the user changes nearly every row of the grid (so there will be more than a hundred cells changed), when she saves the grid, the following client-side exception occurs:

'Sys.WebForms.PageRequestManagerServerErrorException: Sys.WebForms.PageRequestManagerServerErrorException: Index and length must refer to a location within the string.
Parameter name: length' when calling method: [nsIDOMEventListener::handleEvent]
Line 812

I'm using the latest EO.Web Controls version (2011.0.45).

Any help is really appreciated.
Thanks

Hi eo_support,
I verified the version of EO.Web.DLL IS actually 9.0.45.

Once removed the UpdatePanel, the stack trace looks like this:

[ArgumentOutOfRangeException: Index and length must refer to a location within the string.
Parameter name: length]
System.String.InternalSubStringWithChecks(Int32 startIndex, Int32 length, Boolean fAlwaysCopy) +9389263
System.String.Substring(Int32 startIndex, Int32 length) +11
EO.Web.Internal.a.a() +100
EO.Web.Internal.kg.a(String A_0) +536
EO.Web.Internal.kg.a(String A_0) +554
EO.Web.Internal.kg.a(String A_0) +554
EO.Web.Internal.au.b(String A_0) +263
EO.Web.Internal.au.a(String A_0, String A_1) +1106
EO.Web.Internal.au.a(String A_0, String A_1, String A_2) +85
EO.Web.Internal.au.b(String A_0, String A_1) +39
EO.Web.Internal.ca.ac() +427
EO.Web.WebControlBase.LoadViewState(Object savedState) +145
EO.Web.CallbackPanel.a(Object A_0) +64
System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +187
System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +148
System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +225
System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +148
System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +225
System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +148
System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +225
System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +148
System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +225
System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +148
System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +225
System.Web.UI.Control.LoadChildViewStateByIndex(ArrayList childState) +148
System.Web.UI.Control.LoadViewStateRecursive(Object savedState) +225
System.Web.UI.Page.LoadAllState() +312
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +747


Anyway, I'd like to point out that if the user changes, for example, 20 rows, the problem does not occur.
Moreover, the issue doesn't seem to depend on the position of the column being changed.

Thank you

It's a rather complex project.
I have to extract and refactor some parts out of it.
I'll keep you informed.
Thanks

Hello,

I worked hard trying to isolate the problem into a smaller project but with no luck at all.

Maybe the complexity of the user interface of the original project is somehow involved in reproducing the issue.

Unfortunately I don't have enough time to spend in mocking up a project in which the problem occurs.

Is it possible for you to compile a debug version of EO.Web.dll, with some kind of tracing and/or more debug info, in order to dig out the very problem?

Thank you

Hello,

I'm turning up after some months and I finally have had enough time to isolate the problem in a small, self-consistent project.

The problem still exists in the latest EO.Web Controls library (2012.0.43).

You can download the full project here.

Steps to reproduce the problem:

1. Open the solution file in VS2010
2. Start debugging: a page with a large grid will show up
3. Edit the cell of the first row in the column "Cause", and select a value from the dropdown ("001 - Straight time", for example).
4. Repeat the above point for all rows of the grid (see Example.jpg)
5. Press Save button: the exception will occur (trapped by an assert)

Please, let me know if you need further help.

Thanks in advance

Hello,
I confirm you that the in the build 10.0.45.2 the problem is resolved.
Great job!

Thanks a lot

Hello,

I'm sorry to inform you I found a problem with the new version 2012.0.45 I recently upgraded to.

You can replicate it in my test project as follows:
- run the project: the grid will appear
- click on an empty cell of the column "Hrs": the standard edit box will show up, letting you to enter a time value
- press the "refresh" button of the toolbar just on top of the grid (not the browser's one)
- now, click again on a cell of the column "Hrs": the edit box is rather different (it's much wider than the column).
But the really bad news is that no value will be saved when you hit enter, no matter what you type in.

Can you help me, please?

Thanks

Raf

Hi,

Sorry about the delay. Somehow this issue falls into the crack. We no longer have your original test project. Can you post it again?

Thanks!

Hi,

We have posted a new build that should fix this problem. Please see your private message for the download location.

Thanks!

Great. Thanks for the update!