Hellow, 

I have my whdGrid with grouped columns on the initial load, 

whdgExpenseAproveView.GroupingSettings.EnableColumnGrouping = Infragistics.Web.UI.DefaultableBoolean.True
whdgExpenseAproveView.GroupingSettings.GroupedColumns.Clear()
whdgExpenseAproveView.GroupingSettings.GroupedColumns.Add("ApStatus")

then, I have two buttons above the grid, Expand All and Collapse All, what I want is just expand all groups or collapse the entire grid, no matter if client o server side, 

I tried everything but nothing works.:

Protected Sub btnExpand_Click(sender As Object, e As EventArgs) Handles btnExpand.Click
whdgExpenseAproveView.GroupingSettings.InitialRowExpandState = ExpandState.Expand
whdgExpenseAproveView.DataBind()
End Sub

it doesnt work

function ExpandAllRowsNew(Webgrid) {
var grid = $find(Webgrid);
var rows = grid.get_gridView().get_rows()
var oRow
for (i = 0; i < rows.get_length() ; i++) {
oRow = rows.get_row(i);
oRow.set_expanded(true);
}

nothing, 

how can I get this accomplish. 

My grid is just a flat grid with some columns:

<Columns>
<ig:BoundDataField DataFieldName="UserName" Key="UserName" Width="10%" />
<ig:BoundDataField DataFieldName="ApproverName" Key="ApproverName" Width="10%" />
<ig:BoundDataField DataFieldName="LocationDesc" Key="LocationDesc" hidden="true" />
<ig:BoundDataField DataFieldName="GradeDesc" Key="GradeDesc" hidden="true" />
<ig:BoundDataField DataFieldName="ApStatus" Key="ApStatus" hidden="true" />
</Columns>

thanks