How do i set datasource for nested grid in devexpress

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This is my source code for grid

ASP.NET

<dx:ASPxGridView ID="gv_BDA"  runat="server" Theme="Office2010Blue" AutoGenerateColumns="False" Width="95%">
            <Columns>
                <dx:GridViewDataTextColumn Caption="Sr.No" VisibleIndex="0" Width="5%" FieldName="Sr">
                </dx:GridViewDataTextColumn>
                <dx:GridViewDataTextColumn Caption="Particular Description" VisibleIndex="1" Width="25%" FieldName="ParticularDesc">
                </dx:GridViewDataTextColumn>
                <dx:GridViewDataTextColumn Caption="At the end of corresponding quarter of pervious year" VisibleIndex="2" Width="35%">
                    <DataItemTemplate>
                        <dx:ASPxGridView ID="gv_BDA_PreYear" runat="server" AutoGenerateColumns="False" Theme="Office2010Blue" DataSourceID="ds_sample">
                            <Columns>
                                <dx:GridViewDataTextColumn VisibleIndex="0" FieldName="NumAccount"></dx:GridViewDataTextColumn>
                                <dx:GridViewDataTextColumn VisibleIndex="1" FieldName="Limit"></dx:GridViewDataTextColumn>
                                <dx:GridViewDataTextColumn VisibleIndex="2" FieldName="Outstanding"></dx:GridViewDataTextColumn>
                                <dx:GridViewDataTextColumn VisibleIndex="3" FieldName="Overdue"></dx:GridViewDataTextColumn>
                            </Columns>
                        </dx:ASPxGridView>
                    </DataItemTemplate>
                </dx:GridViewDataTextColumn>
                <dx:GridViewDataTextColumn Caption="As of date of Audit" VisibleIndex="3" Width="35%">
                    <DataItemTemplate>
                        <dx:ASPxGridView ID="gv_BDA_CurrentYear" runat="server" AutoGenerateColumns="False" Theme="Office2010Blue">
                            <Columns>
                                <dx:GridViewDataTextColumn Caption="No. of Accounts" VisibleIndex="0" FieldName="ParticularDesc"></dx:GridViewDataTextColumn>
                                <dx:GridViewDataTextColumn Caption="Limit" VisibleIndex="1" FieldName="ParticularDesc"></dx:GridViewDataTextColumn>
                                <dx:GridViewDataTextColumn Caption="Outstanding" VisibleIndex="2" FieldName="ParticularDesc"></dx:GridViewDataTextColumn>
                                <dx:GridViewDataTextColumn Caption="Overdue" VisibleIndex="3" FieldName="ParticularDesc"></dx:GridViewDataTextColumn>
                            </Columns>
                        </dx:ASPxGridView>
                    </DataItemTemplate>
                </dx:GridViewDataTextColumn>
            </Columns>
            <Settings ShowFilterRow="True" ShowGroupPanel="True" />
        </dx:ASPxGridView>

I can able to find child grid Name :"gv_BDA_PreYear" & "gv_BDA_CurrentYear"

when i try to set data source for ChildGridView; it showing me error like gv_BDA_PreYear not found in current page.

What exactly wrong?
I designed gridview[DevExpress] As per our client requirement...

What I have tried:

i tried to get controls inside parent grid.

but FindControl not helpful.

Even in the Properties Window ; grid view name not found.

Posted 24-Feb-16 20:05pm

Nilesh Dalvi

Updated 4-Aug-17 22:17pm

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Member 13347205 · Answer 1 · 2017-08-04T22:17:00

Add event in child grid ::
<dx:ASPxGridView ID="gv_BDA_CurrentYear" runat="server" AutoGenerateColumns="False" Theme="Office2010Blue" OnBeforePerformDataSelect="detailGrid_BeforePerformDataSelect">

C# code::
protected void detailGrid_BeforePerformDataSelect(object sender, EventArgs e)
{
ASPxGridView gv_BDA_CurrentYear = (ASPxGridView)sender;
int id = (int)gv_BDA_CurrentYear.GetMasterRowKeyValue();
SqlCommand cmd = new SqlCommand("select * from myTbl", con);
DataSet ds = new System.Data.DataSet();
SqlDataAdapter ad = new SqlDataAdapter(cmd);
ad.Fill(ds);
gv_BDA_CurrentYear.DataSource = ds;
}