驗證我的錢

Question

我在驗證錢的輸入時遇到了一些麻煩。我用其他問題中的一些指針來編寫一些更好的代碼。以下是我用來驗證輸入是否是金錢的內容。

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 < 1) 
      return false; 

     return true; 
    } 
    catch (Exception) 
    { 
     return false; 
    } 

    return true; 
} 

private bool isCents(string theirMaybeMoneyCents) 
{ 
    if (!isNumber(theirMaybeMoneyCents)) 
     return false; 

    try 
    { 
     int myMaybeCents = Convert.ToInt32(theirMaybeMoneyCents); 

     if (myMaybeCents > 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); 
} 

結果都不是錢，這對我來說很困惑。

Answer 1

看起來像是C＃中的內置驗證金錢。

float num; 
bool isValid = float.TryParse(str, 
NumberStyles.Currency, 
CultureInfo.GetCultureInfo("en-US"), // cached 
out num); 

FROM： https://stackoverflow.com/a/617847/290822

Answer 2

嘗試 decimal.TryParse（myTest4，NumberStyles.Currency，新的CultureInfo（ 「EN-US」），出myResult4）

Answer 3

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碼有什麼問題，可能是Microsoft.VisualBasic.Information。則IsNumeric（theirMaybeNumber）;不處理逗號。