Installing Driver for Legacy Network Adapter on Win2k3 x64 VPC (Hyper-V)

Overview

I installed a 64-bit Windows 2003 R2 Enterprise SP2 on one of my Hyper-V VPC, and add a Legacy Network Adaptor to it. However the network adapter is not automatically installed in the x64 win 2k3 because its driver is not available.

With some Googling I found that 64-bit version of win 2k3 and xp are not supported with corresponding Legacy Network Adaptor driver. Someone suggested a workaround by using the equivalent Vista driver (both x86 and x64).

So I go the driver files from a machine running on x86 Vista and tried it. But the driver installation terminated with Error: "Driver not intended for this platform".

Suspecting this maybe due to the x86/x64 difference, I got another set of driver files from a x64 Windows Server 2008. This time the driver installation ran smoothly and the Network Adaptor works well!

Directory containing Legacy Network Adaptor driver:

Vista:
%windir%\system32\driverstore\FileRepository\dc21x4vm.inf_7d8c6569

Windows Server 2008:
%windir%\system32\driverstore\FileRepository\dc21x4vm.inf_e14caac7

Reference

Windows XP x64 in Hyper-V - Network Drivers

ASP.NET User Control - Part 1

Overview

User Control is quite useful in creating a customized control which can be reused throughout pages. Instead of creating a custom server control, developers can create user control which (in my opinion) is easier to create and modify the control layout.

In this part, I will talk about how to create a user control and include it in an .aspx page.

Reference

ASP.NET User Controls Overview

How to: Include a User Control in an ASP.NET Web Page

Steps

Create a User Control

Creating a user control is very simple with few steps:

1. You need to have a Web Application Project
2. In Solution Explorer, right-click on the project's name (or a folder), select "Add" => "New Item..."
3. Select "Web User Control" under "Web" category, give the control a name and click "Add"
4. Done!

The newly created user control consists of a .ascx (not .aspx) page and a code behind file (just ignore the designer file). The .ascx page currently contains nothing but a "@ Control" directive.

User control .ascx page is very much like a snippet of an .aspx page, you can modify the layout of the user control by adding HTML tags or ASP.NET controls in it just like what you do to .aspx page. Below is the code of a very simple .ascx page:

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="TestUserControl.ascx.cs" Inherits="MyTestWeb.Web.Controls.TestUserControl" %>

 

<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label><br />

<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br />

<asp:Button ID="BtnSubmit" runat="server" Text="Submit" />

 

Include a User Control in an .aspx page

After a User Control is created, it can be used by any .aspx page within the same Web Application by including the control into the page.

To Include a User Control, we have to do 2 things:

1. Create a "@ Register" directive which specify the "TagPrefix", "TagName" and "Src" (Source file) of the User Control.
2. Declare the User Control with tag "<TagPrefix:TagName   />" just like any other ASP.NET control (the difference is ASP.NET Control start with TagPrefix "asp")

Below shows the code of a simple .aspx page including the User Control we just created.

<%@ Page Language="C#" MasterPageFile="~/Pages/Global.Master" AutoEventWireup="true"

    CodeBehind="TestPageWithMaster.aspx.cs" Inherits="MyTestWeb.Web.Pages.TestPageWithMaster"

    Title="Untitled Page" %>

 

<%-- "@ Register" directive --%>

<%@ Register TagPrefix="uc" TagName="TestUserControl" Src="~/Controls/TestUserControl.ascx" %>

 

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">

</asp:Content>

<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">

    <form runat="server">

 

        <%-- User Control declaration --%>

        <uc:TestUserControl ID="TestUserControl1" runat="server" />

 

    </form>

</asp:Content>

Client side validation skipped if submit Button have "onClientClick" JavaScript function

Overview

I have a form using ASP.NET validation controls, I have been using these ASP.NET validators for quite a time and they behaved well. However the problem come when I added a "onClientClick" event handler to the form submit button, and then the validation is just skipped and the form post back every time.

The problem is that the "onClientClick" event get fired before the validation so the validation is skipped. To solve this, we can use the JavaScript function "Page_ClientValidate()" to trigger the client side validation.

Reference

asp:Button Validation with OnClientClick javascript - Not Validating

ASP.NET Validation in Depth

Code Snippet

You can tell "Page_ClientValidate()" to only validate controls of a particular validation group by passing the validation group name as parameter.

function BtnSubmitButton_click()

        {

            if (Page_ClientValidate("ValidationGroup"))

            {

                return confirm("Submit this form?");

            }

            return false;

        }