One of the nice things about VBScript was its built-in formatting functions, such as FormatCurrency, FormatNumber, FormatDateTime, etc. Read on to learn how to use these functions.
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ASP FAQS : ASP.NET
Question : How can I format numbers and date/times using ASP.NET? For example, I want to format a number as a currency.
Answer : One of the nice things about VBScript was its built-in formatting functions, such as FormatCurrency , FormatNumber , FormatDateTime , etc. (For more information on these functions see this FAQ or, better yet, check out the Strings FAQ Category .)
When creating ASP.NET Web pages with VB.NET, you can still use these functions, although you will need to import the Microsoft.VisualBasic namespace. But what if you are using C#, or want to start using the new formatting methods available in .NET? To allow for formatting, the .NET Framework contains a general String.Format static method along with .ToString() methods for each object.
So, first off, you can easily convert a non-string data type to a string by using it's .ToString method. That is, if you wanted to turn a DateTime variable into a string you could do:
'Create a var. named rightNow and set it to the current date/time
Dim rightNow as DateTime = DateTime.Now
Dim s as String 'create a string
s = rightNow.ToString()
This simple code snippet creates a DateTime variable ( rightNow ) that is assigned the current system date/time. A String variable ( s ) is then created and assigned the string representation of the DateTime variable.
The .ToString() contains an overloaded variant that accepts a single String parameter. This parameter can be used to specify how to format the DateTime variable. For example, if we wanted to display the date as a three-lettered month namethen the day, and then a comma followed by the year in four digits (like Jan 30, 2002), we could use the .ToString( formatString ) method like so:
'Create a var. named rightNow and set it to the current date/time
Dim rightNow as DateTime = DateTime.Now
Dim s as String 'create a string
s = rightNow.ToString("MMM dd, yyyy")
Pretty neat, eh? Of course the question still remains: "How in the world did I know to use MMM to display the three-letter abbreviation of a month? The answer, of course, is to hit the documentation. One thing the .NET Framework has an abundance of is documentation. For a list of special formatting characters for date/time purposes, see DateTimeFormatInfo Class .
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