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POC# Exception Parse.Double
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copied!<p>I have a simple C# Web console application that utilises the HTML Agility Pack to retrieve data from a given website. My code takes a value from a form field and attempts to reconstruct it into inches, the code works! however I was wondering if there was a more correct, simpler way of achieving my goal?</p> <pre><code>string MetricName = "686 x 1981mm, 35mm Thick: £143.01"; var priceGrab = MetricName.Substring(MetricName.LastIndexOf('£') + 1); // 25.4 is what we divide the MM value by to get the inch value const double imp = 25.4; Match firstMeasurements = Regex.Match(MetricName, @"\d+"); Match secondMeasurements = Regex.Match(MetricName, @"x([^,]*)"); Match thicknessMeasurements = Regex.Match(MetricName, @",([^mm]*)"); string firstM = firstMeasurements.Value; //Convert MM to Inches double first = double.Parse(firstM) / imp; string secondM = secondMeasurements.Value; Match secondFixed = Regex.Match(secondM, @"\d+"); string secondM1 = secondFixed.Value; //Convert MM to Inches double second = double.Parse(secondM1) / imp; string thicknessM = thicknessMeasurements.Groups[1].Value; Match thirdFixed = Regex.Match(thicknessM, @"\d+"); //Convert MM to Inches double three = double.Parse(thicknessM) / imp; ImperialVariant = string.Format("{0} x {1}\", {2}\" Thick: £{3}",first.ToString("00"), second.ToString("00"), three.ToString("0.00"), priceGrab); return ImperialVariant; </code></pre> <p>ImperialVariant will then equal to:</p> <blockquote> <p>30 x 78", 1.38" Thick: £143.01</p> </blockquote> <p>My program raises the following exception for an unknown reason. </p> <blockquote> <p>at System.Number.ParseDouble(String value, NumberStyles options, NumberFormatInfo numfmt) at System.Double.Parse(String s)</p> </blockquote> <p>Is anybody able to provide some feedback on this??</p> <p>Thank you</p>

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