The path returned by App.Path is inconsistent. If the program is running in a root directory, the path will have a backslash on the end. Otherwise, it won

This script gives a preview of an image file selected for upload (even before the upload process takes place). It works in both IE and Netscape. This way, users can

Ever want to use the Common Dialog “ShowOpenDialog” but were frustrated because it required that Visual Studio be installed on each user’s PC?Here’s an alternative written in VBScript that can

Sometimes you may want to gather the user input with a page, and process it in a different page. As you know, ASP.NET web forms can post only to themselves,

It is usual for a web form to have more than one button control. How can you set the default button that should submit the form and raise its Click

In a typical user registration form, you may ask for quite a lot of data, such as the first and last name, full address, phone and fax numbers, e-mail address,

If you want to share a value or an object instance between all the pages of any session, you typically use the Application object. However, a good alternative is to

Uploading a file from the client to the server is very straightforward with ASP.NET. Just use the tag and its wrapper class HtmlInputFile. Here’s how you define the control on

When dealing with COM, unfamiliar database schemas, or regular code, sometimes you will find yourself wondering whether to test if a variable is Null by using either: IsEmpty(varname)IsNull(varName)If varname =

Defining a UNIQUE constraint on a computed column is a straightforward process, as the following example shows: CREATE TABLE T1 (col1 int NOT NULL,col2 AS col1 + 1 UNIQUE) However,

There is no T-SQL function for getting product of rows in a particular column. For example, say you had a table like this: –/////////////////////////////select * from #tbltest order by mydate

I’ve been bitten by MSVC++’s inability to have templated methods without the whole class being templated and today I figured out a workaround that allows you to maintain most of

Sometimes a program crashes or simply misbehaves on release builds. This is very frustrating because usually you have to ship the optimized release version. The most common reason for this

An application’s memory footprint grows over time and may eventually cause the application to crash. There are many things that lead to a slow memory burn. One of these is

Say you need to change the look and feel of a JSP page being loaded, depending upon the calling URL. You can use hidden form fields to determine the look

‘ A base data class that makes it much easier for derived classes to run a ‘ stored procedure to retrieve data or execute a SQL command. (See usage ‘

When you add a user control to an ASP.NET page, Visual Studio .NET does not add a control declaration as it does when you add standard ASP.NET web controls. The

‘ Log an error/event to the Windows NT/2000 Application Event Log.’ Usage: LogEvent(“Message here”, EventLogEntryType.Information)Sub LogEvent(ByVal message As String, ByVal entryType As EventLogEntryType) If EventLog.SourceExists(Application.ProductName) = False Then EventLog.CreateEventSource(Application.ProductName, “Application”)

Say that you have a page loaded from another page, and that in this page you have a “Save and Return” button that does something and returns to the previous