Find Image control inside nested DataList using C# in ASP.Net

I am taking 3 datalist 1

datalistpost outer datalist.

2. iner datalist dl1.

3 subiner datalist

dlchildcomment one image control taken inside dlchildcomment.

how to find image control dlchildcomment.

below my code

    protected void dl1_ItemCommand(object source, DataListCommandEventArgs e)
    {
        if (e.CommandName == "ReplyComment")
        {
            DataListItem item = (DataListItem)(((Button)(e.CommandSource)).NamingContainer);

            if (e.Item.ItemType == ListItemType.Item)
            {
                DataRowView drv = e.Item.DataItem as DataRowView;
                DataList DATALISTREPLYCHILD = item.FindControl("dlchildcomment") as DataList;
                Image imprnt = item.FindControl("Image_parent") as Image;



                //  DataListItem item = (DataListItem)(((Button)(e.CommandSource)).NamingContainer);
                //DataList DATALISTREPLYCHILD = item.FindControl("dlchildcomment") as DataList;

                // Image imprnt = item.FindControl("Image_parent") as Image;


                string txtcmt = ((TextBox)item.FindControl("txtCommentReplyParent")).Text;

                Label lbl6 = item.FindControl("Label6") as Label;
                string ab = lbl6.Text;


                IP.INSERTCHILDCOMMENT(Int32.Parse(Session["uid"].ToString()), txtcmt, System.DateTime.Now.ToString(), Int32.Parse(ab.ToString()));
                //DataList DATALISTREPLYCHILD = item.FindControl("dlchildcomment") as DataList;


                DataSet odt;
                odt = IP.showchildcomment(Int32.Parse(e.CommandArgument.ToString()));
                if (odt != null)
                {
                    if (odt.Tables[0].Rows.Count > 0)
                    {
                        DataSet dset;
                        dset = pic.Showuserphoto(Int32.Parse(Session["uid"].ToString()));
                        if (dset != null)
                        {
                            Label1.Visible = false;
                            if (dset.Tables[0].Rows.Count > 0)
                            {
                                for (int i = 0; i < dset.Tables[0].Rows.Count; i++)
                                {
                                    dset.Tables[0].Rows[0]["imagedata"] = dset.Tables[0].Rows[i]["imagedata"].ToString();


                                }

                                imprnt.ImageUrl = dset.Tables[0].Rows[0]["imagedata"].ToString();
                            }
                        }
                        else
                        {
                            Label1.Visible = true;
                            //Label1.Text = "Pls Upload the Profile Pic";
                        }

                        DATALISTREPLYCHILD.DataSource = odt;
                        DATALISTREPLYCHILD.DataBind();
                    }
                }
            }
        }
    }