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As sirbounty has suggested the String.Replace method is the directy approach.<br />
<br />
But you might also wanna take a look at the Path.ChangeExtension method. &nbsp;It is designed to do precisely what you want. &nbsp;Take a look at other members of the Path class, you might find them useful... they allow you easily to break up the full path into it's consitutient parts (drive letter, path, file name, extention, etc)<br />
<br />
<a href="http://msdn2.microsoft.com/en-us/library/system.io.path.changeextension.aspx" rel="ugc">http://msdn2.microsoft.com/en-us/library/system.io.path.changeextension.aspx</a><br />
<a href="http://msdn2.microsoft.com/en-us/library/system.io.path.aspx" rel="ugc">http://msdn2.microsoft.com/en-us/library/system.io.path.aspx</a>
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As sirbounty has suggested the String.Replace method is the directy approach.

But you might also wanna take a look at the Path.ChangeExtension method.  It is designed to do precisely what you want.  Take a look at other members of the Path class, you might find them useful... they allow you easily to break up the full path into it's consitutient parts (drive letter, path, file name, extention, etc)

http://msdn2.microsoft.com/en-us/library/system.io.path.changeextension.aspx [http://msdn2.microsoft.com/en-us/library/system.io.path.changeextension.aspx]
http://msdn2.microsoft.com/en-us/library/system.io.path.aspx [http://msdn2.microsoft.com/en-us/library/system.io.path.aspx]

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Happy to help - thanx for the grade! :^)
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How do I change the extension of a file from<br />
<br />
somefile.txt &nbsp;to somefile.xml &nbsp; or somefile.mis and such like ...<br />
<br />
I know this is string manipulation here but I am very out of practice<br />
<br />

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How do I change the extension of a file from

somefile.txt  to somefile.xml   or somefile.mis and such like ...

I know this is string manipulation here but I am very out of practice



String Manipulation  How do I  Change extension of file?  IE: somefile.txt to somefile.mis

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,