GetSelectedFieldValues Info

Hi,
Thank you for the report. This is a bug in the ASPxGridView - the information returned by the GetSelectedRowCount is wrong, and I have created a new bug report for this issue:
ASPxGridView - The GetSelectedRowCount method returns a wrong value if a selected row was deleted
Also, I would like to notify you that your approach is not quite correct. To properly access a detail gridView instance, set its ClientInstanceName to a dynamic value:
                    <dxwgv:ASPxGridView ID="ASPxGridView2" ClientInstanceName='<%# "gridView" + Container.VisibleIndex.ToString() %>' runat="server" AutoGenerateColumns="False"
define the onclick event as shown below:
                    <input id="Button1" type="button" value="Delete Selected Rows" onclick="OnButtonClick('<%# Container.VisibleIndex%>')" />
and finally use the following code within the OnButtonClick event handler:

JavaScript
function OnButtonClick(rowIndex) {  
    var gridView = eval('window.gridView' + rowIndex);  
    var count = gridView.GetSelectedRowCount();  
    alert(' number of rows selected : ' + count);  
    gridView.PerformCallback();  
}  

This is necessary because all the detail GridViews will have the same client instance name and thus you will not be able to distinguish between them.
Thanks,
Plato

in my detail row, i have a page that contains the grid, so using Container.VisibleIndex returns a compilation error saying that apage control doesnt have a visible index, what can i do to solve that?

Hi Maha,
To be able to help you, we need to know the aspx markup and the code you are using. Would you please create a new Support Center ticket and post the code there? We will do our best to help you.