Michael,

It appears that the OnBeforeXXX and OnAfterXXX for editing-type operations will be fired only in normal updating mode (non batch updating).

I think the reason is because batch update has its own specific events such as OnAcceptAllChanges, OnAddPendingChanges, OnUndoChanges and OnUndoAllChanges which supercede the basic editing events.

Hope this helps, 
James.

As James has said, those events will be fired only in normal updating mode, not for BatchUpdate scenario. I am sure that the information from James has already answered your question. 

Regards,
Handy

Now, I use ClientSideEvent OnAcceptAllChanges. Perhaps, somebody knows a better way

function grd_OnAcceptAllChanges(controlId)
{
    var grd = ISGetObject(controlId);

    var DelChanges = grd.GetChanges("Deleted");
    
    for (var i in DelChanges)
    {
        if (DelChanges[i].Row.GetCell("Dependencies").Value != "0") {
            DelChanges[i].Row.UndoChanges();
        }                 
    }
    return true;
}

What exactly do you want to achieve? If you want to UndoChanges, you can also validate at OnUndoChanges event. There should be a parameter, rowObject. 
rowObject has a properties, _RowStateCached which will able you to know if its state deleted, modified or etc. Hope this helps.

Regards,
Handy

The user should not be able to delete some rows.

I will check this before the data is sent to the database. Has User deleted a row which has Dependencies (e.g. foreign key constraint), I will undo changes (for this row only).

With ClientSideEvent "OnBeforeDelete" I could inform User by realtime. But this Event is not fired in Batch Update mode. Therefore, I inform the user on OnAcceptAllChanges Event.

If you can get cells information of a row object, would it be a help for your scenario?

e.g. rowObject.GetCells()[i];

You can get the value of each cells and also keyValue in each rowObject.  Hope this helps. 

Now, I use ClientSideEvent OnAcceptAllChanges. Perhaps, somebody knows a better way

function grd_OnAcceptAllChanges(controlId){
    var grd = ISGetObject(controlId);
    var DelChanges = grd.GetChanges("Deleted");
    
    for (var i in DelChanges)
    {
        if (DelChanges[i].Row.GetCell("Dependencies").Value != "0") {
            DelChanges[i].Row.UndoChanges();
        }                 
    }
    return true;
}

Michael,

I think your code is already good and decent. That should be the best way to achieve your scenario.

- James.

Hi James

I want refresh date before I check Dependencies. I have add grd.Refresh()

Now I get sometimes following Message:

Please wait while WebGrid is in progress processing request...

Is refresh performed asynchronously? Is there a way to refresh data first?

function grd_OnAcceptAllChanges(controlId) {

    var grd = ISGetObject(controlId);
    grd.Refresh();

    var DelChanges = grd.GetChanges("Deleted");
    for (var i in DelChanges) {
        if (DelChanges[i].Row.GetCell("Dependencies").Value != "0") {
            DelChanges[i].Row.UndoChanges();
            alert("Row can't be deleted: " + DelChanges[i].Row.GetCell("Name").Value);
        }
    }
    return true;
} 

Michael,

Yes, Refresh is an asynchronous AJAX process. But you can also run it synchronously by simply setting the Asynchronous property to false.

Here's how:

grid.XmlHttp.Asynchronous = false;

Remember to set it to true again after your Refresh() method call.

Hope this helps,
James.

Great

Thanks James!