Here is the code for a webcontrol, quite simple:
-------------------------------------------------------------------------------------------------------------
<%@ Control Language="c#" AutoEventWireup="false"
Codebehind="WebUserControl1.ascx.cs"
Inherits="WebApplication23.WebUserControl1"
TargetSchema="http://schemas.microsoft.com/intellisense/ie5"%>
<STYLE>
..ModuleContent P { FONT-SIZE: x-small; FONT-FAMILY: Arial, Verdana,
Helvetica }
LI { FONT-SIZE: x-small; FONT-FAMILY: Arial, Verdana, Helvetica }
A { FONT-SIZE: x-small; FONT-FAMILY: Arial, Verdana, Helvetica }
TD { FONT-SIZE: x-small; FONT-FAMILY: Arial, Verdana, Helvetica }
TH { FONT-SIZE: x-small; FONT-FAMILY: Arial, Verdana, Helvetica }
DIV { FONT-SIZE: x-small; FONT-FAMILY: Arial, Verdana, Helvetica }
</STYLE>
<table cellSpacing="0" cellPadding="0" width="490" border="0">
<tr>
<td width="5%"></td>
<td width="95%"><asp:label id="lblMessage" runat="server"
EnableViewState="False" ForeColor="Red"
Font-Bold="True"></asp:label><asp:validationsummary id="ValSummary"
runat="server" Font-Bold="True"
DisplayMode="SingleParagraph"></asp:validationsummary><br>
<table cellSpacing="0" cellPadding="5" border="0" width="100%">
<tr bgColor="#ebebeb">
<td colSpan="2"></td>
</tr>
<tr bgColor="#ebebeb">
<td style="WIDTH: 105px" width="105"> ID (min 4 char):</td>
<td width="78%">
<asp:textbox id="txtID" runat="server" Width="250px"></asp:textbox>
<asp:label id="lblID" runat="server">(ex.A5570A)</asp:label>
<asp:regularexpressionvalidator id="RegExpValId" runat="server"
Font-Bold="True" ValidationExpression=".{4,}" ControlToValidate="txtID"
Display="Dynamic" Font-Size="Medium" ErrorMessage="This is the error
message!">*</asp:regularexpressionvalidator></td>
</tr>
<tr bgColor="#ebebeb">
<td colSpan="2"><asp:button id="btnSearch" runat="server"
Text="Search"></asp:button> </td>
</tr>
</table>
</td>
</tr>
</table>
----------------------------------------------------------------------------------------------------------
A rather simple form, The webcontrol contains a textbox and a validation
control.
the button needs to click twice to show the summary error message!
The question can be resolved by one of the following operations:
1,change the textbox's width or remove the css
2,I remove the left side table cell
3,change the label lblID's text to either "(ex.A5570AA)" or "(ex.A5570)".
But I want to know why?
