Show Hide add Button for LoggedIn user and Edit button for other users using C# and VB.Net in ASP.Net

I have a profile page were i display all users profile images with either button add or button edit. So the idea is when for example if i login i will see all the profile photos of all users including my own photo but the only button that will show beside my photo is edit button, the button add will be hidden, every other photo of users on the page will only have button add while edit button will be hidden see code for showing all users

protected void Page_Load(object sender, EventArgs e)
    {

        if (!this.IsPostBack)
        {
            this.Populatebooks();
        }
    }

    private void Populatebooks()
    {
        // string userId = Session["userName"].ToString();
        // string userId = Session["userName"].ToString();
        //    string str = ConfigurationManager.ConnectionStrings["DMGS"].ConnectionString;
        string Populatebooks = "GetUserPOSTS";
        using (SqlConnection con = new SqlConnection(constring4))
        {
            con.Open();
            using (SqlCommand cmd = new SqlCommand(Populatebooks, con))
            {
                cmd.CommandType = CommandType.StoredProcedure;
                // cmd.Parameters.AddWithValue("@Name", Request.QueryString["Id"].ToString());
                cmd.Parameters.AddWithValue("@UserName", Session["userName"]);
                // cmd.Parameters.AddWithValue("@Id", Id);
                //lblpost.Text = TextBixcomment.Text.Replace(Environment.NewLine, "<BR />");
                SqlDataAdapter sda = new SqlDataAdapter(cmd);
                DataTable dt = new DataTable();
                sda.Fill(dt);
                ViewState["DataTable"] = dt;
                GetMergedAll.DataSource = dt;
                GetMergedAll.DataBind();
            }
        }
    }