how to create a simple File Watcher Windows Service Application

Introduction

This article will briefly explain how to create a simple "File Watcher” application to run as a Windows Service the coding language used is C#.

Description

Use FileSystemWatcher to watch for changes in a specified directory. You can watch for changes in files and subdirectories of the specified directory. You can create a component to watch files on a local computer, a network drive, or a remote computer.

Another very useful class, FileSystemWatcher, acts as a watchdog for file system changes and raises an event when a change occurs. You must specify a directory to be monitored. The class can monitor changes to subdirectories and files within the specified directory. If you have Windows 2000, you can even monitor a remote system for changes. (Only remote machines running Windows NT or Windows 2000 are supported at present.) The option to monitor files with specific extensions can be set using the Filter property of the FileSystemWatcher class

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Excel Interop : System.Runtime.InteropServices.COMException (0x800A03EC): Microsoft Office Excel cannot access the file

Introduction

System.Runtime.InteropServices.COMException (0x800A03EC): Microsoft Office Excel cannot access the file 'D:\sunil\sunil.xls. There are several possible reasons: • the file name or path does not exist. •

This error occur on widows server 2008 r2 64 bit

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HTTP Error 404 - File or Directory not found with IIS 6.0

Introduction

"HTTP Error 404 - File or Directory not found" error message when you request dynamic content with IIS 6.0

Description

When you request dynamic content such as an Active Server Pages (ASP) page, an ASP.NET page, an Internet Services API (ISAPI) application, or a Common Gateway Interface (CGI) application on a Microsoft Windows Server 2003 server that is running Internet Information Services (IIS) 6.0, you may receive one of the following error messages:

Error message 1

HTTP Error 404 - File Not Found

Error message 2

HTTP Error 404- File or Directory not found

Solution

To permit IIS to serve content that requires a specific ISAPI or CGI extension that is already listed in the Web service extensions list, follow these steps:

1. Open IIS Manager, expand the master server node (that is, the Server name node), and then select the Web service extensions node.
2. In the right pane of IIS Manager, right-click the extension that you want to enable. In this example, this is Active Server Pages.
3. Click to select the Allow check box.

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