Find Label control inside Nested ASP.Net DataList using C#

i have been able to creat different method for inserting the two different IDs, now my challenge is on txtcommentpost in Datalist GetUSERCOMMENT2, i want to insert CommentID Column of TABLE A into table B ID column, i tried to do so and its not inserting, it can only insert ID Column of A table into CommentID Column of B table.

Code for Datalist GetUSERCOMMENT2

        TextBox textBox = sender as TextBox;

        Label label = sender as Label;
        if (textBox.ID == "txtcommentpost")
        {
           // int comment2ID = Convert.ToInt32((textBox.NamingContainer.FindControl("lblId2") as Label).Text);
          int lblcomid = Convert.ToInt32((textBox.NamingContainer.FindControl("LBLCOM") as Label).Text);
          
            string comment = textBox.Text.Trim();
            
            string name = (textBox.NamingContainer.FindControl("lblnestname") as Label).Text;
            string username = (textBox.NamingContainer.FindControl("lblshId") as Label).Text;
           string imagename = (textBox.NamingContainer.FindControl("FImageName2") as Label).Text;
           Insert(lblcomid, comment, name, username, imagename, "PostComment2");

-----------------------------

      <asp:DataList ID="GetUSERCOMMENTS2" runat="server" OnItemDataBound="GetUSERCOMMENTS2_ItemDataBound" Width="100%">
                        <ItemTemplate>
                            
                              <div class="media-left"  style="">
                                  
                                  </div>
                       
        <article class="timeline-entry">

            <div class="timeline-entry-inner">

                <div class="timeline-icon bg-warning " style="">
                    <i class="entypo-feather">
                        
                    </i>
                </div>

                <div class="timeline-label">
                     
                    <h2 style="margin-bottom:2px"><a href="#" style=" margin-bottom:2px">
                          <asp:Label ID="lblfname" Text='<%#Eval("fName") %>' CssClass="" runat="server" Font-Bold="True" Font-Names="Arial" ForeColor="Black" Font-Size="Smaller" />
                        <asp:Label ID="lblUserNamecom" Text='<%#Eval("UserName") %>' CssClass="" runat="server" Font-Bold="True" Font-Names="Arial" ForeColor="Gray" Font-Size="Smaller" />
                        
                        
                        </a> 
                       
                    </h2>
                    
                    <span>
                        <asp:Label ID="LBLCOM" runat="server" Text='<%#Eval("CommentID") %>' Visible="true" />
                       //  <asp:Label ID="lblId2" runat="server" Text='<%#Eval("ID") %>' Visible="false" />
                         <asp:Label ID="lblComments2" runat="server" Text='<%#Eval("Comments") %>'  ForeColor="#333333" CssClass="" Font-Names="Arial" Font-Size="Smaller" Font-Bold="False" />
                       
                    </span>

Post Table

ID Username  Posts

10  mic22       hello world

--------------------------------

Comment A table

CommentID       Comments   ID

4               Nice one     10

----------------------------------

Comment B table

ID   Comment2   CommentID

8    i like that     1