In hierarchical table, the code 

grd.Tables["<Table>"].GetChanges("Deleted")[i].Row.GetCell("<Column>").Value

will work. Attached is the sample code for the HierarchicalGrid, the sample will print out all the modified key value when Accept All Changes is invoked.

Hi Glenn

Yes you are right but it doesn't work if <Column> is not visible.

That's my problem.

Invisible column will not be rendered, so it will not be accessible from client side function. However, we could use hidden data member property on a visble cell to hold the hidden column value. Here is a snippet to set the hidden column description value in the key column in the PrepareDateBindind server side event:

WebGrid1.RootTable.Columns.GetNamedItem("description").Visible = false;
WebGrid1.RootTable.Columns.GetNamedItem("key").HiddenDataMember = "description";

During onAcceptAllChanges client side function you will need to access the cell element and retirve the description attribute:

var parentMod = grd.Tables["parent"].GetChanges("Modified");
for (i = 0; i < parentMod.length; i++)
{   
    parentMod[i].Row.GetCell("key").CellElement.getAttribute("description");
}

Hi Glenn

var DelChanges = grd.GetChanges("Deleted");
for (var i in DelChanges) {
    if (DelChanges[i].Row.GetCell("Dependencies").Value > 0) {
        if (DependenciesText.length > 0)
            MessageQuantity = 2;
        else
            MessageQuantity = 1;
        DependenciesText += "\n - " + DelChanges[i].Row.GetCell("CustomerID").Text + " | " + DelChanges[i].Row.GetCell("CompanyName").Text + " | " + DelChanges[i].Row.GetCell("ContactName").Text + " | " + DelChanges[i].Row.GetCell("ContactTitle").Text;
        DelChanges[i].Row.UndoChanges();
    }
}

Please try my sample.

Hi Glenn

Please have a look on my last post.

Sorry for the late reply, it seems in the WebGrid1_OnAcceptAllChanges client side event handler you are invoking this line:

grd.XmlHttp.Asynchronous = false;grd.Refresh();
grd.XmlHttp.Asynchronous = true;

Those lines will collapse the other group which will cause the issue, our suggestion is to move those line after the iteration of deleted row changes.

By moving those lines after the deleted row changes iteration the JS issue does not occur.