| Title | 
                
                    Test
                    Find
                    
                    Pattern Title
                 | 
            
            
                | Expression | 
                ^([a-zA-Z]\:) (\\{1}| ((\\{1}) [^\\] ([^/:*?<>"|]*(?<![ ])))+)$  | 
            
            
                | Description | 
                Validates windows path and invalidates UNC path  | 
            
            
                | Matches | 
                c:\34\445\546\3.htm | C:\  | 
            
            
                | Non-Matches | 
                \\qaz | c:\Ram<\ | C: or c:\\ or \\   | 
            
            
                | Author | 
                
                    Rating:
                        
 
                    Gaurav Shrivastava
                 | 
            
            
                | Source | 
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              | Your Rating | 
              
                
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	                Title: remember to take spaces out of expression
	                Name: ken
	                Date: 2/2/2006 10:41:25 AM
	                Comment: 
The correct expression should be this:
^([a-zA-Z]\:)(\\{1}|((\\{1})[^\\]([^/:*?<>"|]*(?<![ ])))+)$
For some reason, the one that's on the page has extra spaces in it...