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I've solved this problem a couple of ways in the past. One approach would be to create a class and override the ToString() method to return only the last 4 digits.<br />
<br />
You may also need extra logic to test whether or not the number is a valid credit card number. Those rules vary depending on card brand but can be found with a little Googling.<br />
<br />
Another approach if you don't really care about first verifying that what you're about to mask is actually a credit card number is to create an extension method that does the masking for you. This might not be an option for you since your question is tagged as both Visual Basic Classic and Visual Basic.NET. What platform are you actually using?
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I've solved this problem a couple of ways in the past. One approach would be to create a class and override the ToString() method to return only the last 4 digits.

You may also need extra logic to test whether or not the number is a valid credit card number. Those rules vary depending on card brand but can be found with a little Googling.

Another approach if you don't really care about first verifying that what you're about to mask is actually a credit card number is to create an extension method that does the masking for you. This might not be an option for you since your question is tagged as both Visual Basic Classic and Visual Basic.NET. What platform are you actually using?

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Hi,<br />
I am using vb.net 2005 windows version.I have found a solution for valid card number,just need to masking the number and pop up last 4 digits<br />
Cheers
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Hi,
I am using vb.net 2005 windows version.I have found a solution for valid card number,just need to masking the number and pop up last 4 digits
Cheers

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Hello,<br />
For a credit card need to throw a message box &nbsp; masking the card number and only showing the last 4 digits.<br />
<br />
Any Suggestion?<br />
Cheers
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Hello,
For a credit card need to throw a message box   masking the card number and only showing the last 4 digits.

Any Suggestion?
Cheers

How to mask a string

Visual Basic .NET (VB.NET) is an object-oriented programming language implemented on the .NET framework, but also supported on other platforms such as Mono and Silverlight. Microsoft launched VB.NET as the successor to the Visual Basic language. Though it is similar in syntax to  Visual Basic pre-2002, it is not the same technology,

Visual Basic.NET

The .NET Framework is not specific to any one programming language; rather, it includes a library of functions that allows developers to rapidly build applications. Several supported languages include C#, VB.NET, C++ or ASP.NET.

.NET Programming

Visual Basic is Microsoft’s event-driven programming language and integrated development environment (IDE) for its Component Object Model (COM) programming model. It is relatively easy to learn and use because of its graphical development features and BASIC heritage. It has been replaced with VB.NET, and is very similar to VBA (Visual Basic for Applications), the programming language for the Microsoft Office product line.