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Hi countrymeister,<br />
<br />
This regex pattern should do it.<br />
<br />
String pattern = @&quot;(^ASC[a-zA-Z]+\.[xX][lL]<wbr />[sS])&quot;;<br />
<br />
Regards,<br />
Fernando
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Hi countrymeister,

This regex pattern should do it.

String pattern = @"(^ASC[a-zA-Z]+\.[xX][lL][sS])";

Regards,
Fernando

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my first submission: &nbsp;takes into account all letters with (.)*, but also takes into account other characters such as numbers, etc...incase they are part of the name...<br />
<br />
my second submission only takes into consideration and says there must be at least 1 character...and disreqard the '...' &nbsp;its a habit...<br />
<br />
also as ddrudik stated, I should have ^at the front and $ at the end...for beginning and end of line...
</div>


my first submission:  takes into account all letters with (.)*, but also takes into account other characters such as numbers, etc...incase they are part of the name...

my second submission only takes into consideration and says there must be at least 1 character...and disreqard the '...'  its a habit...

also as ddrudik stated, I should have ^at the front and $ at the end...for beginning and end of line...

<div>
well actually should be:<br />
<br />
Regex reg = new Regex(&quot;^(ASC)[a-zA-Z]+\.xl<wbr />s$&quot;);<br />
<br />
reg.Match(&quot;TextToCompare&quot;)<wbr />;
</div>


well actually should be:

Regex reg = new Regex("^(ASC)[a-zA-Z]+\.xls$");

reg.Match("TextToCompare");

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Thanks for the question and the points.
</div>


<div>
<div class="content wysiwyg-content">
I need to write a regular expression that matches the following string<br />
<br />
the start of the string has ASC and then it could have any letters from a-zA-Z followed by .xls<br />
<br />
example ASCRegions.xls , ASCfaculties.xls, ASCContracts.xls
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</div>


I need to write a regular expression that matches the following string

the start of the string has ASC and then it could have any letters from a-zA-Z followed by .xls

example ASCRegions.xls , ASCfaculties.xls, ASCContracts.xls

Regular Expression

A regular expression ("regex") is a sequence of characters that define a search pattern, mainly for use in pattern matching with strings, or string matching, i.e. "find and replace"-like operations. Regular expression processors are found in several search engines, search and replace dialogs of several word processors and text editors, and in the command lines of text processing utilities, such as sed and AWK. Many programming languages provide regular expression capabilities, some built-in, for example Perl, JavaScript, Ruby, AWK, and Tcl, and others via a standard library, for example .NET languages, Java, Python and C++ (since C++11). Most other languages offer regular expressions via a library.

Regular Expressions

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).