Question

I have an ASPxGridView and in the EditForm, I have a popup form when the suer clicks a button. I need to get the ID for the currently selected entity/row so that I can query the db and populate a dropdown on the popup based on that ID. How can I get that? I know with some events, you can do this:

protected void myGrid_OnRowUpdating(object sender, ASPxDataUpdatingEventArgs e)
        {
            Guid entityId = (Guid)e.Keys[0];

So I wanted to try that with the SelectionChanged event, but the event argument is only of type EventArgs, so i cannot use the above..

Ideas?

Answer 1

I ended up doing something client-side. First, I added this column:

<dx:GridViewCommandColumn ShowSelectCheckbox="True" VisibleIndex="0" Width="40">
                <HeaderTemplate>
                    <dx:ASPxCheckBox ID="SelectAllCheckBox" runat="server" ToolTip="Select/Unselect all rows on the page"
                        ClientSideEvents-CheckedChanged="function(s, e) { gridView.SelectAllRowsOnPage(s.GetChecked()); }" />
                </HeaderTemplate>
            </dx:GridViewCommandColumn>

then I also added this (to the same grid):

<ClientSideEvents SelectionChanged="grid_SelectionChanged" />

Lastly, the javascript:

var selected = [];

        function grid_SelectionChanged(s) {
            s.GetSelectedFieldValues("ID", GetSelectedFieldValuesCallback);
        }

        function GetSelectedFieldValuesCallback(values) {
            selected = [];
            for (var i = 0; i < values.length; i++) {
                selected.push(values[i]);
            }
        }