Question

How can we get the numbers 7 and 4 and 5 from the following string:

MODULE potmtpMAIN main <info: "Enterprise Optimizer 7.4 for COR Technology 5.5 --    
Advanced Solver Edition", url:"http://EO.riverlogic.com", url_menu:"EO Online...",  
app_id:"EOAS",app_name:"Enterprise Optimizer AS", app_major:7,  
app_minor:4,app_micro:5,app_copyright:"\251 1996-2010 River Logic Inc.\r\nAll 
Rights Reserved."> 

The search must be based on app_major: app_minor: and app_micro

Thank You in advance

Answer 1

Here is a simple regex to pick out each part, with example code for someone unfamiliar with regular expressions in .NET: (Edited, since the original question was edited to remove the asterisks).

Regex Exp = new Regex(@"(?<=\W)app_major:(?'Number'\d+)");

Match M = Exp.Match(input);

if(M.Success)
{
    string Number = M.Groups["Number"].Value;
}

You could just use 3 different expressions, one for each part you want to pick out of the string.

Explanation:

• The first part (?<=\W) ensures that the match is preceded by a non-word character (in thise case, most likely a comma).
• The second part app_major: matches the literal part of the string you’re looking for.
• (?'Number'\d+) is a captured group, which we label Number, where we’re trying to match one or more digits \d+.