Execute ASP.Net Nested Repeater Button Click event in C# and VB.Net

Here i am getting values from database to outer repeater in page load event, and the inner repeater values are populated in outer repeater_Item_Databound event.

Now i want to delete some data of inner repeater on click event of a button that is in inner repeater. 

Give me the logic please.

<asp:Repeater ID="rptrnotes" runat="server"
    OnItemCommand="rptrnotes_ItemCommand"
    OnItemDataBound="rptrnotes_ItemDataBound">
    <ItemTemplate>
        <div class="col-md-12">
            <div class="card comp-card" style="border: 1px groove black;">
                <div class="card-body">
                    <div class="row align-items-center">
                        <div class="col">                                                                                                   
                            <h6 class="m-b-1" style="display:none;">
                                <%# Convert.ToDateTime(Eval("Created_Date")).ToString("dd-MM-yy") %></h6>
                             <h6 class="m-b-2" style="font-family:'Times New Roman'">
                                <%# Eval("Notes_Description") %>
                            </h6>
                            <p class="m-b-0" style="font-size:x-small">
                                <%# Eval("Created_By") %> created a note on <%# Eval("Created_Date") %>
                            </p>
                            <br />
                             
 
                            <asp:Label ID="lblleadnoteid" runat="server" Visible="false" Text='<%# Eval("LN_ID") %>'></asp:Label>
                             
                        </div>
                        <div class="col-auto">
                            <asp:Button ID="btndeletenote" runat="server" CssClass="btn waves-effect waves-light btn-danger" Text="Delete" OnClick="btndeletenote_Click"/>
                        </div>
                        <div class="col-auto">
                            <asp:Button ID="btneditnote" runat="server" class="btn waves-effect waves-light btn-success" Text="Edit" OnClick="btneditnote_Click"/>
                        </div>
                    </div>                                                                                        
                    <div class="card-block">
                        <div class="page-header-breadcrumb">
                            <div id="divreplysection" runat="server" visible="false">
                                <div class="form-group row">
                                    <div class="col-sm-12">
                                        <asp:TextBox ID="txtrepli" runat="server" TextMode="MultiLine" Rows="3" Columns="5" CssClass="form-control" MaxLength="500"></asp:TextBox>
                                    </div>
                                </div>
 
                                <div class="form-group row">
                                    <div class="col-sm-3">
                                        <asp:Button ID="btnsavereply" runat="server" CssClass="btn btn-success waves-effect waves-light" Text="Save Reply" CommandName="SaveReply"/>
                                    </div>
                                    
                                </div>
                            </div>
 
 
                            <div id="divreplylistsection" runat="server">
                                <asp:Repeater ID="gvreplylist" runat="server"
                                    OnItemCommand="gvreplylist_ItemCommand"
                                    ClientIDMode="Static">
                                    <ItemTemplate>
                                         
                                            <ul class="breadcrumb">
                                                <li class="breadcrumb-item">
 
                                                    <div class="row">
                                                        <div class="col-md-10">
                                                            <%# Eval("Reply_Description") %>
                                                        </div>
                                                        <div class="col-md-1">
                                                            <asp:Button ID="btndeletenotereply" runat="server"
                                                                CssClass="btn waves-effect waves-light btn-danger"
                                                                Text="X"
                                                                CommandArgument='<%# Container.ItemIndex %>'
                                                                CommandName="DeleteNotesReplyDiv"/>
                                                        </div>
                                                    </div>
 
                                                </li>
                                            </ul>
 
                                            <asp:Label ID="lblleadnotereplyid" runat="server" Visible="false" Text='<%# Eval("LNR_ID") %>'></asp:Label>
                                            <asp:Label ID="lblleadnoteparentid" runat="server" Visible="false" Text='<%# Eval("Lead_Note_ID") %>'></asp:Label>
                                    </ItemTemplate>
                                </asp:Repeater>
                            </div>
                        </div>
                    </div> 
                    <hr />
                    <asp:LinkButton ID="replynoteslink" runat="server" CssClass="btn btn-mat waves-effect waves-light btn-info" CommandName="NotesReplyDiv">Reply</asp:LinkButton>
                </div>
            </div>
        </div>
    </ItemTemplate>
</asp:Repeater>

public void BindLeadNotesList()
{
    try
    {
        Lead_Notes_BAL bo = new Lead_Notes_BAL();
        bo.Procedure = "SP_Lead_Notes";
        bo.Action = "SELECT_Lead_Notes";
        bo.Lead_ID = Convert.ToInt32(Request.QueryString["LEADID"].ToString());
        Lead_Notes_DAL dal = new Lead_Notes_DAL();
        DataTable dt = dal.GetLeadNotesFilterDetails(bo);
        if (dt.Rows.Count > 0)
        {
            NotesCount = dt.Rows.Count;
            div_notes_empty.Visible = false;
            rptrnotes.DataSource = dt;
            rptrnotes.DataBind();
        }
        else
        {
            rptrnotes.DataSource = null;
            rptrnotes.DataBind();
        }
    }
    catch (Exception ex)
    {
        //ErrorShow(ex.ToString(), null);
    }
}

protected void rptrnotes_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
    {
        Repeater ChildGridView = (Repeater)e.Item.FindControl("gvreplylist");
        Label lblleadnoteid = e.Item.FindControl("lblleadnoteid") as Label;
        ChildGridView.DataSource = GetNotesReply(Convert.ToInt32(lblleadnoteid.Text));
        ChildGridView.DataBind();
    }
}

public DataTable GetNotesReply(int lead_note_id)
{
    DataTable dt = new DataTable();
    try
    {
        Lead_Notes_Reply_BAL bo = new Lead_Notes_Reply_BAL();
        bo.Operation = "SELECT_Lead_Notes_Reply";
        bo.Procedure = "SP_Lead_Notes_Reply";
        bo.Lead_Note_ID = lead_note_id;
        Lead_Notes_Reply_DAL dal = new Lead_Notes_Reply_DAL();
        dt = dal.GetLeadLeadNotesReplyFilterDetails(bo);
    }
    catch (Exception ex)
    {
        ErrorShow(ex.Message, null);
    }
    return dt;
}