The System.IO.Directory class exposes a CreateDirectory method that, as its name suggests, can create a subdirectory. However, this method is even more powerful than it appears at a first glance,

If a form owns another form, the owned form will be always displayed in front of its owner form, no matter which is the active form. This makes owned forms

The System.Windows.Forms.Help class encapsulates the HTML Help 1.0 engine and lets you display the index, the search page, or a specific topic in an HTML file in HTML Help format

The Clip property of the System.Windows.Forms.Cursor class represents the rectangle within which the mouse cursor is confined, or Nothing if the mouse can move over the entire screen. This rectangle

The new AddHandler statement makes it possible to attach event dynamically, that is without having to bind them via static code based on the Handles keyword. This keyword is also

That way, when a parameter in your connection string changes, you only need to change it in one place versus every web page that utilizes it. Below is an example

When using VBScript in ASP, you have only one data type: VARIANT. Although you can store objects within this data type, every time you refer to a property/method of the

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The small window is usually used as a pop-up page for advertisements or to show information concerning particular keywords.For example, you can put in a page: Requestor: James Dean When

//validation of From Date//Here FromDay,FromMonth,FromYear & ToDay,ToMonth,_ToYear are the names ofthe form fields corresponding to from date and to _dates. Assuming thatthese are drop down fields on the form.function validateFromDate(){

Suppose you need to tack on an additional value to all your custom errors in SQL Server 2000. For VB programmers, that might mean tacking on the value of vbobject

Creating Custom Errors in SQL Server is not a hard thing to do, but managing those errors across multiple developers can be difficult. The question becomes: who has already used

This stored procedure accepts tablename, fieldname, fieldvalue andfieldtype as parameters. If no fieldname, fieldvalue is passed, it deletes all records from the table passed. Fieldvalue could be a single value

When you call a COM method, it accepts BSTR in the following way: Iface->f(L””) L”” does not create a BSTR. This just creates a wide character string and if the

If you still use a lot of DOS commands or execute batch files that you have acquired or written over time, this tip can save you a lot of typing.

Many scientific/trigonometric/mathematical applications need the values of ‘pi’ and ‘e’ (the basis of natural logarithms) for calculations. The math class in the java.lang package has two static double constants that

Have you ever wanted to have 1:1 relation between tables (i.e. a table in which two columns act like primary key not combined but separately)?DB only supports a single column,

Declaring a virtual member function private may be useful when you wish to limit the number of derived classes that can override the given function. In such a case, you

Oftentimes, an application is packaged as a jar file. Ususally, you have to use a command line option to execute it. It would be easier to double click on the

If an application’s behavior is dependent on the amount of available memory, then this code fragment can be used to determine what action an application should take. For example, a

Sometimes, it is essential to know the fields and methods that are declared in a particular class. This is all the more important when there is no access to the

In ASP, Request object has five collections: QueryString, Form, Cookies, ClientCertificate, and ServerVariables. When you want to access information in one of these collections, you have the choice of writing

It’s very easy to create cross-tab queries in SQL. In the SELECT statement of a query, most databases allow you to use an expression with an aggregate function, not only

You can pack the XML Parser along with the Java Application you are shipping. The following steps show how to do this. I used the Apache’s Xerces and Xalan parsers

The following trick isn’t portable. Furthermore, even implementations that currently support it do not guarantee to support it in their future releases. Still, it can teach you a few things

Certain compiler and code analyzers can detect a missing enumerator in a switch statement. Consider: enum Seasons{ Winter, Spring, Summer, Fall};switch (s){case Winter: wearCoat(); break;case Spring: pruneGarden(); break;case Summer: goSwimming();

If you need to concatenate variables of different types to form a string, use a stringstream object. The header contains the declarations of the stringstream family of classes. Using its

There are two methods of reading a string from the standard input. The first one uses getline(), as in the following example: std::string name;getline(cin, name); // option #1 The second