validation我的钱
我在validation资金投入方面遇到了一些麻烦。 我已经使用了其他问题的一些指针来编写更好的代码。 以下是我用来validation输入是否是金钱的内容。
static void Main(string[] args) { string myTest1 = "$1,234.56"; string myTest2 = "$1.00"; string myTest3 = "$1000.01"; string myTest4 = "$1,234,567.89"; myIsMaybeMoneyValidator Miimv = new myIsMaybeMoneyValidator(); bool myResult1 = Miimv.isMaybeMoney(myTest1); bool myResult2 = Miimv.isMaybeMoney(myTest2); bool myResult3 = Miimv.isMaybeMoney(myTest3); bool myResult4 = Miimv.isMaybeMoney(myTest4); } public bool isMaybeMoney(object theirMaybeMoney) { string myMaybeMoney = theirMaybeMoney.ToString(); if (myMaybeMoney.StartsWith("-")) { myMaybeMoney.Remove(0, 1); } if (!myMaybeMoney.StartsWith("$")) { return false; } myMaybeMoney.Remove(0, 1); string[] myMaybeMoneyStringArray = myMaybeMoney.Split('.'); string myMaybeMoneyDollars = myMaybeMoneyStringArray[0]; string myMaybeMoneyCents = myMaybeMoneyStringArray[1]; if (!isDollars(myMaybeMoneyDollars)) { return false; } if (!isCents(myMaybeMoneyCents)) { return false; } return true; } private bool isDollars(string theirMaybeMoneyDollars) { if (!isNumber(theirMaybeMoneyDollars)) return false; try { int myMaybeDollars = Convert.ToInt32(theirMaybeMoneyDollars); if (myMaybeDollars 99) return false; if (myMaybeCents < 1) return false; return true; } catch (Exception) { return false; } return true; } private bool isNumber(object theirMaybeNumber) { return Microsoft.VisualBasic.Information.IsNumeric(theirMaybeNumber); } 结果都不是钱，这让我很困惑。
看起来在C＃中有内置的金钱validation。
float num; bool isValid = float.TryParse(str, NumberStyles.Currency, CultureInfo.GetCultureInfo("en-US"), // cached out num);
来自： https ： //stackoverflow.com/a/617847/290822
尝试使用decimal.TryParse（myTest4，NumberStyles.Currency，new CultureInfo（“en-US”），my myResult4）
只需使用：
float value; bool isMoney= float.TryParse(str, NumberStyles.Currency, CultureInfo.GetCultureInfo("en-US"), out value);
如果你想知道你的代码有什么问题，可能是Microsoft.VisualBasic.Information.IsNumeric（theirMaybeNumber）; 不处理逗号。