To get the size of a data type in .Net you can use sizeof() or Marshal.SizeOf() . I’ll briefly explain the difference between the two. sizeof() sizeof() (MSDN) can only be used on data types that have a known size at compile-time. It is compiled as a constant. If you attempt to use it on invalid data types you… Read More »
Introduction What happens if a method is just a wrapper for another method? Is the extra jump optimized away by compiler? Does it take much time? I thought I’d look into this and measure a bit. With the different compilers, Jits and runtimes I thought it would be fun to see what happens. I’ll use a == operator… Read More »
Introduction With this post I am digging into some performance improvements for Unity 3D’s Vector2, Vector3, Vector4 and Quaternion. The short version is that they really need IEquatable<T> and can benefit from a better GetHashCode() . I’m demonstrating this with example of how it severely decreased performance in my project. Adding IEquatable<T> has no side-effects, if is actually best… Read More »
There are many ways to read configuraiton files in .Net. Using ConfigurationManager you can easily read for example appSettings section. But usually I want this to be in managed code. The solution often suggested is to create separate sections with a varying degree of manual work, field mapping and xml readers. Many of the solutions also suggest that… Read More »
Code to verify Norwegian national id number (fødselsnummer / personnummer) written in C#. Obeys 2013 standards as described in this Wikipedia article. Please let me know how if you find bugs / improvements. :)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 | public static class NorwegianPersonalNumberValidator { // Implementation of Norwegian personal number verification based on specifications outlined on https://no.wikipedia.org/wiki/F%C3%B8dselsnummer // Version 1: 2016-12-07 Tedd Hansen, tedd@konge.net public class Result { public enum GenderType { Male, Female } [Flags] public enum NumberType { Normal = 0, D = 1, H = 2, DAndF = 3, // Not valid FH = 4, DAndFG = 5, // Not valid HAndFH = 6, // Not valid DAndHAndFH = 7 // Not valid } public bool Success { get; set; } public string ErrorMessage { get; set; } public GenderType Gender { get; set; } public NumberType Type { get; set; } public DateTime Birthday { get; set; } public override string ToString() { if (Success) return $"Success: {Success}, Birthday: {Birthday.ToString("yyyy'-'MM'-'dd")}, Gender: {Gender}, Type: {Type}"; else return $"Success: {Success}, ErrorMessage: {ErrorMessage ?? "N/A"}"; } } private struct IndividualNumberControlRange { public int From; public int To; public int FromYear; public int ToYear; } private static readonly IndividualNumberControlRange[] IndividualControlRange = new[] { new IndividualNumberControlRange() { From = 0, To = 499, FromYear = 1900, ToYear = 1999 }, new IndividualNumberControlRange() { From = 500, To = 749, FromYear = 1854, ToYear = 1899 }, new IndividualNumberControlRange() { From = 500, To = 999, FromYear = 2000, ToYear = 2039 }, new IndividualNumberControlRange() { From = 900, To = 999, FromYear = 1940, ToYear = 1999 }, }; private static Regex PersonalNumberRegex = new Regex(@"^(?<birthdate>(?<day>\d\d)(?<month>\d\d)(?<year>\d\d))(?<individual>\d\d(?<gender>\d))(?<checksum>\d\d)$"); public static Result Validate(string number) { var result = new Result(); // Is it the correct length? if (number == null || number.Length != 11) return new Result() { Success = false, ErrorMessage = "Feil lengde. Personnummer er 11 tall." }; // Extract what we need var match = PersonalNumberRegex.Match(number); // Regex is only looking for 11 numbers, so we can assume any error is because there are non-numbers if (!match.Success) return new Result() { Success = false, ErrorMessage = "Personummer skal kun inneholde tall." }; // Parse the numbers var day = int.Parse(match.Groups["day"].Value); var month = int.Parse(match.Groups["month"].Value); var year = int.Parse(match.Groups["year"].Value); var individual = int.Parse(match.Groups["individual"].Value); var gender = int.Parse(match.Groups["gender"].Value); var checksum = int.Parse(match.Groups["checksum"].Value); // Compensate for D-numbers if (day > 31) { result.Type |= Result.NumberType.D; day -= 40; } // Compensate for H-numbers if (month > 30) { result.Type |= Result.NumberType.H; month -= 40; } // Compensate for FH-numbers if (day >= 80) { result.Type |= Result.NumberType.FH; day = 1; } // Determine gender (not that we need it) result.Gender = gender % 2 != 0 ? Result.GenderType.Male : Result.GenderType.Female; int fullYear = 0; // Get the range based on the individual range var ranges = IndividualControlRange.Where(r => individual >= r.From && individual <= r.To).ToList(); if (ranges == null || ranges.Count == 0) return new Result() { Success = false, ErrorMessage = "Feil i personnummer. (#3)" }; foreach (var range in ranges) { // Get full year based on the range // Note that if there is a change to range so it crosses centuries then we need more checking here - or else the next check will fail var fYear = int.Parse(range.FromYear.ToString().Substring(0, 2) + year.ToString("D2")); // Check that we are within allowed range if (fYear >= range.FromYear && fYear <= range.ToYear) { fullYear = fYear; break; } } if (fullYear == 0) return new Result() { Success = false, ErrorMessage = "Feil i personnummer. (#4)" }; // Have .Net verify the date, using ISO 8601 should be universally safe var iso8601Birthday = fullYear + "-" + month.ToString("D2") + "-" + day.ToString("D2"); DateTime dtBirthday; if (!DateTime.TryParse(iso8601Birthday, out dtBirthday)) return new Result() { Success = false, ErrorMessage = "Feil i personnummer. (#5)" }; result.Birthday = dtBirthday; // And finally calculate and verify the two checksum digits at the end of the number // Convert personal number string to int array var n = number.Select(c => int.Parse(c.ToString())).ToArray(); // Calculate checksum number 1 int k1 = 11 - (3 * n[0] + 7 * n[1] + 6 * n[2] + 1 * n[3] + 8 * n[4] + 9 * n[5] + 4 * n[6] + 5 * n[7] + 2 * n[8]) % 11; if (k1 == 11) k1 = 0; if (k1 == 10 || k1 != n[9]) return new Result() { Success = false, ErrorMessage = "Feil i personnummer. (#6)" }; // Calculate checksum number 2 int k2 = 11 - (5 * n[0] + 4 * n[1] + 3 * n[2] + 2 * n[3] + 7 * n[4] + 6 * n[5] + 5 * n[6] + 4 * n[7] + 3 * n[8] + 2 * k1) % 11; if (k2 == 11) k2 = 0; if (k2 == 10 || k2 != n[10]) return new Result() { Success = false, ErrorMessage = "Feil i personnummer. (#7)" }; result.Success = true; return result; } } void Main() { // Test a whole lot of numbers... foreach (var pn in new[] { "11056027043", "01073703642", "11123434945", "19073120317", "02012526582", "01052304454", "28023727473", "07052739084", "03126320255", "13106215582", "07032425814", "26082416446", "15060238585", "30121408178", "27096212181", "23021347574", "20064234219", "15081024143", "26045230189", "10082000734", "02012048281", "20046647611", "29096114654", "10026402781", "06122615721", "17093725573", "04121422528", "04024403756", "20101229085", "19092040383", "23053739865", "24101534665", "12021509637", "29011203424", "18100810960", "22040112832", "18101938626", "16021315420", "18060835965", "26050311189", "27094110284", "21112531448", "28015703069", "21122141931", "30062121293", "10095324709", "03129788495", "19123924293", "24020317082", "26085821228", "26093737317", "29123535985", "29034704358", "05079764185", "11022315392", "01070615963", "19123122669", "21072401511", "22054406766", "09104338078", "18062248188", "30030827720", "30112309574", "13052429840", "18071235706", "21031838069", "27124620754", "06024248559", "03033029178", "23123301676", "02034006841", "21072007651", "02125218752", "09036030736", "17021721999", "08023716837", "30031710606", "08116344379", "27116322930", "15071437741", "17093343433", "13030820546", "13044940323", "07052826904", "04072204420", "19116213748", "23109866350", "05012118130", "21094016352", "25095110668", "11123630884", "01114934301", "10022530181", "19056102216", "06025612378", "24074641810", "01040326363", "03034908183", "13032149086", "02114412077", "18080406424", "17072630378", "04092334681", "29080604899", "25123841185", "10113841724", "12065136587", "06030310878", "22020526134", "13102022887", "11115532164", "02072342685", "28114002692", "29104548448", "28052326658", "18116435868", "27044618252", "22024417623", "23022628828", "26034940583", "06051220313", "11042224601", "07083106608", "09039858808", "20022534093", "13035932571", "07081439073", "08053604146", "07073128735", "26096220609", "31075807301", "03022413723", "07063723511", "26066222992", "06084708613", "23013117187", "29073019808", "24062118284", "16032844042", "15123629776", "14123902867", "16035907215", "07095638052", "11034806901", "22126334676", "05031049115", "30092903458", "20034734152", "11063819206", "25055243754", "27035620058", "21051146074", "20094511330", "05059959494", "16053718144", "04124348973", "19112526393", "15065744985", "04106439600", "10121512268", "11020023335", "08081519855", "05075030136", "07056207850", "11115902573", "02042847839", "16100324044", "06075042491", "21079891638", "18070849859", "01015033106", "19072248530", "12023702809", "27080408124", "18044930346", "22100127346", "16119888232", "27033837831", "04042622287", "14034120723", "15014131539", "20035421794", "18115548537", "23064702998", "02024939521", "24030549194", "28094723177", "12030246126", "28063144225", "08052621187", "01110836399", "19011233360", "20101138829", "11053336886", "12114423309", "10070343334", "14093948247", "07043538963", "28014503937", "19070428914", "01110540457", "27061246180", "27056341256", "13105013773", "27036345107", "31082817118", "06115110088", "15105730222", "20052542872", "16096010048", "25122123025", "10094641611", "11034548759", "16103839568", "17100930382", "11094129240", "02022029110", "17106242046", "12106207591", "23074421733", "06123642862", "23126244819", "13124902694", "08081101885", "22015211354", "21013130903", "02122305093", "23010019192", "29044201982", "24100324632", "24013846509", "21024927722", "25106340725", "16083327239", "31034007376", "15121411005", "20015216191", "25113637032", "26075821742", "18060828616", "29051214674", "19126131146", "26043134476", "20124131643", "29075545310", "29094040734", "01055524900", "29076437376", "27040714753", "10096633292", "04099754678", "06081102277", "08069899936", "08021834301", "18059884715", "18045613433", "25096416248", "25120211954", "26040910149", "05086131120", "22033447179", "12045314845", "02122312332", "25096647819", "21030620507", "26101618802", "14073911886", "04115003416", "25111041191", "11069684981", "01033241638", "07114207610", "14090225597", "10011130785", "21084015145", "18065138693", "21070305647", "25100337862", "30060807694", "08091021456", "19052803538", "16126241708", "19029750915", "19052047725", "15065819209", "02013245013", "28082011120", "27086345590", "12080322230", "29115414354", "30091342681", "23104817351", "18050542919", "22063729772", "10075347206", "16084800833", "09024430097", "01024032112", "29041435516", "08115302893", "05074909924", "19099758808", "03062045476", "10094712861", "11053907778", "20062606097", "19102611627", "27106512758", "22059952793", "19060604080", "11111513424", "24030202607", "14072424973", "11110422220", "12010841346", "13126129011", "10123039667", "31053648854", "29101736693", "30093149412", "09060608617", "07111913875", "18030536645", "19123804832", "15022305376", "13031915419", "15106031603", "15012828958", "26040746632", "31125107454", "28021640524", "31034442404", "09101119162", "08072518595", "15122923778", "02052538788", "21104313105", "21095508070", "02114908889", "16102948053", "02013914853", "13041911578", "23101716481", "09076347295", "03084733708", "14029668915", "17014122842", "08121512794", "22010539092", "11013406253", "09115212289", "04059650756", "24094335554", "17084615870", "25055616100", "11023346283", "14036438143", "24096131476", "22033837937", "23124303443", "22094532470", "23075543980", "23030123395", "18109671580", "10081235622", "20012049200", "30011228476", "30093913872", "29091211910", "01061730466", "12095347930", "10010933094", "22091122883", "03056626505", "18072343111", "14084414019", "17062318252", "21042831856", "03062007698", "16021847171", "25031247198", "03055615054", "16061512628", "31059997591", "10090645116", "15075346317", "29115839673", "10031546643", "21053445451", "05125424823", "23044029804", "10066417358", "26041503873", "30015003363", "15090710157", "12011248851", "14041024063", "04081813839", "31036116946", "07114921801", "05074332090", "02073642070", "02123322404", "19102233509", "10039651837", "24122702606", "31082308469", "11113122333", "04109679920", "22020342378", "20114343235", "19083010404", "09020424386", "20084610225", "08014748289", "14125332715", "10066343737", "05026324388", "28079678793", "11086630941", "01121319434", "17092608131", "14112442643", "23112748318", "15064031225", "04045736933", "05031643602", "30084722614", "11012503603", "19124843947", "20070510635", "08024502334", "29112218511", "01080036686", "08066217095", "03103928582", "14054946709", "01040135258", "19080024161", "14034440035", "01056204950", "19021710949", "01014138419", "01085116874", "18034724292", "04079883218", "16084343351", "06112416593", "13102701318", "04100422277", "21075330003", "08026249539", "01060044496", "11103922633", "31030741075", "05062220564", "16085700174", "13044233996", "03064148671", "04104513102", "07055033352", "17112946667", "20113429144", "09106040696", "09113322559", "07079879538", "01064723444", "13044342086", "15101644283", "29035205509", "29083306236", "06105524984", "27080734072", "27011202581", "05119689084", "25055430252", "11113026334", "24043924482", "14020945185", "15122248159", "10065644555", "06109770173", "26031828677", "28113924669", "28021433677", "28112044436", "14064322827", "28090226136", "24123309487", "10122611766", "07036327736", "13033525707", "24114832339", "21074331898", "13120716705", "27112512654", "23083844418", "21094311257", "10036115233", "04129951651" }) Console.WriteLine(pn + " " + NorwegianPersonalNumberValidator.Validate(pn)); // Some of these fail because individual-number falls within range specifications modified since 2013 foreach (var pn in new[] { "10083707696", "13093347166", "25082347197", "26109815046", "22022912694", "18031445155", "16030389615", "07092846657", "31059624876", "04077129877", "26112803822", "08121510198", "23042348880", "27063413890", "09030766986", "06108721853", "14127632058", "12086022409", "28084133568", "24049651844", "28065002622", "19024308416", "07025722390", "29020842316", "06087743258", "20100924359", "29119751495", "25059992409", "07056334208", "09128248274", "01109432780", "02121093742", "05115905424", "28120468229", "29051098151", "10072619469", "29044808119", "07023610501", "11034542645", "05055048314", "02107131240", "20050086985", "16053043643", "03121733217", "12018422660", "17064503634", "27090297444", "03048643964", "05041210674", "05097902315", "07114118537", "17030967038", "22077028521", "08128646702", "17076614105", "06120435254", "19110324122", "17027840000", "10010954903", "04013210964", "05097238490", "16099016802", "06048324272", "05040033272", "24051623408", "23027743323", "25024516515", "25025001357", "30111022298", "25064808071", "26019430072", "24080899544", "07070344453", "13111347470", "18077042063", "05087022635", "24021541008", "08014120557", "21050083443", "03010150123", "12117433941", "31075014360", "18026418417", "14129766973", "24057348689", "09088833322", "22095346603", "04046229113", "06097808951", "17050690660", "03076022568", "21127402415", "12088323473", "25077642032", "02063144269", "02119105563", "02036006202", "01119724933", "06111534096", "18052302559", "13028929743", "05079530214", "20053746420", "26055526353", "09051845177", "04124148184", "28129844541", "30129870172", "15113328697", "25107024606", "09122633672", "05095300180", "08117622828", "23060726175", "17096009437", "19094811778", "07125437154", "23061077731", "14106225746", "20028632305", "10017731896", "08051616759", "30078506187", "15124612672", "30086844466", "01020765271", "06090201628", "30060409702", "15029030755", "19109331425", "09115512231", "07099808351", "11011458817", "26073736543", "28086016372", "14082849697", "18056009597", "28092209042", "31019831259", "01078941584", "26045905194", "01037408367", "22103232094", "15010940661", "25068944891", "21061606855", "30048711215", "10020879985", "28065614792", "18074300746", "18126104185", "27085129002", "15098749907", "19097622577", "30100422081", "02032406192", "16030761387", "10121061746", "26046935372", "06044544812", "07052131469", "19092748777", "30058415517", "22124447589", "03080235630", "18017605891", "18065504304", "24108217045", "06100542887", "10049103900", "20057238306", "20090032314", "22055913432", "16038836483", "20092608078", "14048424105", "12107944298", "04113432638", "09011416605", "29071641145", "06125519383", "02033905079", "13028938599", "02101285076", "05116220212", "08122038867", "25034718558", "05020678226", "13014030241", "17095234623", "20010965579", "19093536447", "27010983466", "19110648394", "11123927267", "22024324951", "03067614983", "21046341837", "04117204702", "01093732827", "28041172276", "25032128125", "24095542197", "13025443424", "28017207638", "18080161642", "23030671635", "08047331561", "01111428634", "30109998849", "01084922087", "26034431158", "11098942590", "17031822874", "07082123649", "16090761750", "08051363400", "20117126642", "17021703117", "11063234178", "09098723339", "15022341739", "06120822541", "24112342946", "27129520855", "19117808524", "06082525856", "11111346013", "08042703002", "04027611996", "17121254816", "27112533988", "16120606577", "17070633388", "05124029475", "23120874934", "08072129297", "07110840777", "08053328998", "16080955913", "28044226865", "29038936725", "19113649243", "06081838729", "22035212713", "11058304818", "07023640095", "08090987667", "20110123184", "18079407514", "16081931228", "15036018264", "28127416615", "22112437731", "20064120132", "28030568100", "03129134282", "31076710131", "08124247005", "10105937852", "25120006331", "23085711822", "14019638856", "25080605040", "21045441234", "25030831694", "22102645220", "21034242078", "28088406925", "03062302916", "05121706425", "14120267133", "26123546724", "06113319486", "07057332578", "22121348458", "21063847345", "30092814455", "31080685591", "22089511511", "22082246456", "23108110864", "24110674194", "23111463719", "31084643028", "07095645997", "13022543460", "29121626428", "01056941033", "07063711467", "20010016895", "25113640955", "11083912148", "07066618832", "06082743640", "14069776281", "09120022854", "31032647467", "04031837907", "24115907529", "02067448599", "23053924190", "19010792439", "09071169925", "26019205796", "07024548702", "15031053983", "13126733814", "24012027482", "01090168424", "01066847973", "05031938165", "02028403286", "15126503943", "15010472919", "23072128702", "28040770676", "21024930545", "13039639771", "23013331464", "19010360970", "07100739873", "02016040846", "04107244854", "30010112199", "12073523212", "27031397443", "29092725837", "12043915779", "17051630602", "17036036923", "20017312228", "10018507302", "01011149614", "03116638648", "30011588596", "05036133696", "20043143469", "16103517579", "22078812501", "30090943290", "16076024557", "13032314214", "01127722451", "13067742286", "13103543295", "09013932902", "25128524013", "06060193299", "24011289807", "20067305524", "15122835054", "24029669356", "23084822086", "14078315823", "06112612422", "09041080970", "29119612398", "14025200404", "10072522856", "08089116164", "25021053611", "08100996279", "01021566809", "30063706783", "10010720023", "29109604184", "03080912322", "30095226589", "16129639737", "18100691481", "14023908175", "17029866368", "03050795127", "19021230394", "10030642371", "18079435844", "25043631112", "06051498257", "20010811784", "12055743760", "01066249707", "06058943590", "01046330877", "21100345363", "20070807875", "04091134026", "17090665367", "24115231568", "14103114560", "08118020597", "28077431847", "21063719770", "14016015793", "23022546740", "30034806329", "14098543903", "17060131201", "20018235812", "08041304813", "17070290324", "17069049745", "01067816605", "06035435660", "17054933878", "22015237574", "26026620642", "22124143857", "13039703429", "22068723942", "02109438661", "20103007144", "07087331320", "17082321217", "02067144352", "29106604442", "26069772985", "05032814044", "30099030913", "22090036061", "15022327140", "23083929723", "05033424223", "14040991329", "13112921103", "06107343030", "25020297789", "16125021208", "15126600140", "03034247667", "17110482302", "24082812268", "16124516874", "13036349292", "04049980979", "23115107623", "17107147616", "06049629069", "25107322577", "21064541983", "07108343340", "07080668958", "29071543992", "18110254675", "17105516770", "25050881507", "13107600978", "06112223981", "25030192780", "21071644542", "10066326344", "10108731791", "21065328922", "05086413088", "20128028227", "11085021658", "24054403859", "15017008169", "25020744874", "19020233403", "11090881630", "25037546316", "07079135377", "22021218662", "22010683347", "25086327093", "27099647286", "25010443876", "28040663306", "13012532533", "17097020663", "27117522143", "08103642265", "24056001588", "03068818612", "12066541817", "06049824457", "12021915813", "24030895300", "29108145682", "07016737369", "30086437577", "29017338127", "03011362329", "27100131795", "20111010758", "08079335771", "11076010082", "18028944272", "12017224601", "03094619784", "17086849011", "05088745258", "19022403403", "29039536941", "11024645470", "27061366984", "14064536177" }) Console.WriteLine(pn + " " + NorwegianPersonalNumberValidator.Validate(pn)); } |
(PS: This code is easy to test in LINQPad. Select C# Program, paste it in and hit run.)
Regex for matching e-mail in C#. Came across http://emailregex.com/ which has a horrible example, so ended up making my own loosely based on that. It leaves much to be desired, but will cover most use cases well enough.
1 2 3 4 | public static readonly Regex _emailRegex = new Regex( @"^[\w0-9!#$%&'*+/=?^_`{|}~-]{1,50}(?:\.[\w0-9!#$%&'*+/=?^_`{|}~-]{1,50}){0,8}" + @"@(?:[-\w0-9]{1,50}?\.){1,10}[-\w0-9]{2,50}?$", RegexOptions.Compiled); |
Identity Framework 3 is in release candidate along with ASP.Net 5. The problem I set up a web project in ASP.Net 5 and created a controller for user import. It’s just some simple code that attempts to add multiple users. Adding a single user works great, but if I attempt to perform multiple operations in one go I… Read More »
Visual Studio 2015 with ASP.Net 5 doesn’t support Areas in the GUI editor. Hopefully that will come, but until then here is a simple workaround. Create folder structure In the root of your project (not wwwroot) create the folder structure for Areas manually. In this example I created an area named “Foobar”. Edit Startup.cs to add routes for… Read More »
Doing game development I use a lot of timers. Every Update() I check if its time to do something. To make this as light as possible I made a small benchmark to check the speed of different ways of getting time. When running the code ignore the first 1000-result from each test (used for warmup). Also ignore the… Read More »
I recently discovered how slow Console.MoveBufferArea actually is. I used it for writing NLog output to a console and discovered that at times of high output it became dead slow. I could at times see it flicker and update line for line while the whole machine temporarily came to a crawl. As I searched the web I found… Read More »