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WebDataGrid and first row selection (ServerSide)

Hello, I have a problem with webdatagrid and the server side selection of the first row.

The Grid is used only for details selection and after loaded and show datain each rows, I need to select the first row and load the relative details in a separate Ajax Panel.

During the normal use, selecting a different row, the Ajax Panel content is correctly updated.

My problem happen if I select the first row (server side) in the following way:

SelectedRowCollection selectedRows = Grid.Behaviors.Selection.SelectedRows;

selectedRows.Add (Grid.Rows [0]);

selecting other rows everything seems work good (Rows > zero), but if I go back to the first Row (Row [0]), it seems that I am losing alignment, and Ajax Panel show old data.

If I choose other rows again, everything seems good.

If, on the other hand, I don't select the first Row (by server side code) and click each rows, the selection Grid works correctly, updating the Ajax Panel, even when I select Row [0].

This is my Grid:

<ig:WebDataGrid ID="Grid" runat="server" AutoGenerateColumns="False"
                        EnableDataViewState="True" EnableRelativeLayout="True" BorderWidth="1px"
                        Height="130px" Width="720px" DataKeyFields="Indice"
                        BorderStyle="Solid" BackColor="White" EnableAjax="False"
                        EnableAjaxViewState="False" onrowselectionchanged="Grid_ActiveRowChange">
                                <ig:BoundDataField DataFieldName="KDE02" DataType="System.Int32" Hidden="True" Key="KDE02" Width="10px">
                                    <Header Text="KDE02" />
                                <ig:BoundDataField DataFieldName="A01" DataType="System.String" HtmlEncode="False" Key="A01" Width="100px">
                                    <Header Text="A01" />
                                <ig:BoundDataField DataFieldName="A03" DataType="System.Int32" HtmlEncode="False" Key="A03" Width="40px">
                                    <Header Text="A03" />
                                <ig:BoundDataField DataFieldName="WXDD" DataType="System.String" HtmlEncode="False" Key="WXDD" Width="140px">
                                    <Header Text="WXDD" />
                                <ig:BoundDataField DataFieldName="A50Z" DataType="System.Decimal" Key="A50Z" Width="160px">
                                    <Header Text="A50Z" />
                                <ig:BoundDataField DataFieldName="X80A" DataType="System.String" Key="X80A" Width="80px">
                                    <Header Text="X80A" />
                                <ig:BoundDataField DataFieldName="X80E" DataType="System.String" Key="X80E" HtmlEncode="False" Width="50px" CssClass="igg_CheckBoxAlignCentrer">
                                    <Header Text="X80E" />
                                <ig:BoundDataField DataFieldName="Indice" DataType="System.String" Hidden="true" Key="Indice" Width="10px">
                                    <Header Text="Indice" />
                                <ig:EditingCore AutoCRUD="False" BatchUpdating="True">
                                <ig:Selection CellClickAction="Row" RowSelectType="Single">
                                    <AutoPostBackFlags RowSelectionChanged="True" />

For me it is essential to load the details of the first GridRow and populate the relative Ajax Panel.

I can also loading data by forcing the index "0" from code, but I need that the Grid show the first row selected, but does not misalign the selections of other rows

PS:   Infragistics4 20.2, Version=20.2.20202.1

some advice?

Thank you

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