c#之如何使用 C sharp 中的正则表达式计算总时间

我想使用正则表达式计算“GSA 搜索”的总“运行时间”。

我的日志文件的格式是:

WX Search = Server:nomos-scanner.corp.com User:vibsharm appGUID: wx Elapsed Time: 975ms SaveSearchID:361 
WX Search = Server:nomos-scanner.corp.com User:vibsharm appGUID: wx Elapsed Time: 875ms SaveSearchID:361 
GSA Search = Server:nomos-scanner.corp.com User:gulanand appGUID: wx Elapsed Time:890ms SaveSearchID:361 
GSA Search = Server:nomos-scanner.corp.com User:vibsharm appGUID: wx Elapsed Time:887ms SaveSearchID:361 
GSA Search = Server:nomos-scanner.corp.com User: gulanand appGUID: wx Elapsed Time: 875.5ms SaveSearchID:361 
GSA Search = Server:nomos-scanner.corp.com User:vibsharm appGUID: wx Elapsed Time:877.6ms SaveSearchID:361 

我的代码:

 string searchKeyword = "WX GSA Search"; 
            string fileName = @"C:\Users\karansha\Desktop\sample log.txt"; 
            string[] textLines = File.ReadAllLines(fileName); 
 
            List<string> results = new List<string>(); 
 
            foreach (string line in textLines) 
            { 
                if (line.Contains(searchKeyword)) 
                { 
                    results.Add(line); 
                } 
            } 
            string x = string.Join(",", results); 
            List<string> value = new List<string>(); 
            Regex regex = new Regex(@"Elapsed Time:\s*(?<value>\d+\.?\d*)\s*ms"); 
            MatchCollection matches = regex.Matches(x); 
            foreach (Match match in matches) 
            { 
                var time = match.Groups["value"].Value; 
                if (value.Contains(time)) value.Add(time); 
            } 
            int ElapsedTime = value.Count(); 
            Console.WriteLine(ElapsedTime); 
            // keep screen from going away 
            // when run from VS.NET 
            Console.ReadLine(); 

请您参考如下方法:

Linq 方式:

Regex regex = new Regex(@"Elapsed Time:\s*(?<value>\d+\.?\d*)\s*ms"); 
double totalTime = textLines.Where(line => line.Contains(searchKeyword)) 
                            .Select(line => regex.Match(line)) 
                            .Where(match => match.Captures.Count > 0) 
                            .Sum(match => Double.Parse(match.Groups["value"].Value)); 

非 Linq 方式:

Regex regex = new Regex(@"Elapsed Time:\s*(?<value>\d+\.?\d*)\s*ms"); 
double totalTime = 0; 
int count = 0; 
foreach (string line in textLines) 
{ 
    if (line.Contains(searchKeyword)) 
    { 
        Match match = regex.Match(line); 
        if (match.Captures.Count > 0) 
        { 
            try 
            { 
                count++; 
                double time = Double.Parse(match.Groups["value"].Value); 
                totalTime += time; 
            } 
            catch (Exception) 
            { 
                // not a number 
            } 
        } 
    } 
} 
 
double average = totalTime/count;