<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="cmp_numRow.ascx.cs" Inherits="NKC_WF.WebUserControls.cmp_numRow" %>

size:
<asp:TextBox runat="server" ID="txtNumRow" Text="10" Width="2em" AutoPostBack="True" OnTextChanged="txtNumRow_TextChanged"></asp:TextBox>