Saving high precision decimal numbers to SQlite

DBClasses.cs

@@ -72,10 +72,12 @@ namespace CryptoCalc
 
         public long WalletID { get; set; }
         public string Currency { get; set; }
-        public string Amount { get; set; }
+        public long Amount { get; set; }
+        public ulong AmountDecimal { get; set; }
         public string TransactionType { get; set; }
         public string FeeCurrency { get; set; }
-        public string FeeAmount { get; set; }
+        public long FeeAmount { get; set; }
+        public ulong FeeAmountDecimal { get; set; }
         public string Platform { get; set; }
         public string Note { get; set; }
 
@@ -85,12 +87,12 @@ namespace CryptoCalc
 
         public Transaction() { SetDBStrings(); }
 
-        public Transaction(long walletID, string currency, string amount, string type)
+        public Transaction(long walletID, string currency, decimal amount, string type)
         {
             SaveUnixTimeNow();
             WalletID = walletID;
             Currency = currency;
-            Amount = amount;
+            (Amount, AmountDecimal) = Util.SplitDecimal(amount);
             TransactionType = type;
 
             Platform = "";
@@ -99,14 +101,14 @@ namespace CryptoCalc
             SetDBStrings();
         }
 
-        public Transaction(string currency, string amount, string type, string feeCurrency, string feeAmount)
+        public Transaction(string currency, decimal amount, string type, string feeCurrency, decimal feeAmount)
         {
             SaveUnixTimeNow();
             Currency = currency;
-            Amount = amount.ToString(CultureInfo.InvariantCulture);
+            (Amount, AmountDecimal) = Util.SplitDecimal(amount);
             TransactionType = type;
             FeeCurrency = feeCurrency;
-            FeeAmount = feeAmount.ToString(CultureInfo.InvariantCulture);
+            (FeeAmount, FeeAmountDecimal) = Util.SplitDecimal(feeAmount);
             Platform = "";
             Note = "";
 
@@ -124,14 +126,16 @@ namespace CryptoCalc
                     + $"@{nameof(UnixTime)},"
                     + $"@{nameof(Currency)},"
                     + $"@{nameof(Amount)},"
+                    + $"@{nameof(AmountDecimal)},"
                     + $"@{nameof(TransactionType)},"
                     + $"@{nameof(FeeCurrency)},"
                     + $"@{nameof(FeeAmount)},"
+                    + $"@{nameof(FeeAmountDecimal)},"
                     + $"@{nameof(Platform)},"
                     + $"@{nameof(Note)}";
         }
 
-        public string FullInfo => $"{ Index } {WalletID} { GetLocalTimeFromUnixTime(UnixTime) } { Currency } { decimal.Parse(Amount, CultureInfo.InvariantCulture) } { TransactionType }";
+        public string FullInfo => $"{ Index } {WalletID} { GetLocalTimeFromUnixTime(UnixTime) } { Currency } { Util.CombineDecimal(Amount, AmountDecimal) } { TransactionType }";
 
         public string CreateTable(string walletTableName)
         {
@@ -141,10 +145,12 @@ namespace CryptoCalc
             + $"\"{nameof(WalletID)}\"              INTEGER NOT NULL,"
             + $"\"{nameof(UnixTime)}\"              INTEGER NOT NULL,"
             + $"\"{nameof(Currency)}\"              TEXT NOT NULL,"
-            + $"\"{nameof(Amount)}\"                TEXT NOT NULL,"
+            + $"\"{nameof(Amount)}\"                INTEGER NOT NULL,"
+            + $"\"{nameof(AmountDecimal)}\"         INTEGER NOT NULL,"
             + $"\"{nameof(TransactionType)}\"       TEXT NOT NULL,"
             + $"\"{nameof(FeeCurrency)}\"           TEXT,"
-            + $"\"{nameof(FeeAmount)}\"             TEXT,"
+            + $"\"{nameof(FeeAmount)}\"             INTEGER,"
+            + $"\"{nameof(FeeAmountDecimal)}\"      INTEGER,"
             + $"\"{nameof(Platform)}\"              TEXT,"
             + $"\"{nameof(Note)}\"                  TEXT,"
             + $"PRIMARY KEY(\"{nameof(Index)}\"     AUTOINCREMENT),"
@@ -166,7 +172,8 @@ namespace CryptoCalc
         public string Platform { get; set; }
         public string Name { get; set; }
         public string Currency { get; set; }
-        public ulong Balance { get; set; }
+        public long Balance { get; set; }
+        public ulong BalanceDecimal { get; set; }
         public int DefaultWallet { get; set; }
         public string Note { get; set; }
 
@@ -183,7 +190,7 @@ namespace CryptoCalc
             Platform = platform;
             Name = name;
             Currency = currency;
-            Balance = Util.ConvToLong(0M);
+            (Balance, BalanceDecimal) = Util.SplitDecimal(0);
             DefaultWallet = 0;
             Note = note;
 
@@ -203,6 +210,7 @@ namespace CryptoCalc
                 + $"@{nameof(Name)},"
                 + $"@{nameof(Currency)},"
                 + $"@{nameof(Balance)},"
+                + $"@{nameof(BalanceDecimal)},"
                 + $"@{nameof(DefaultWallet)},"
                 + $"@{nameof(Note)}";
         }
@@ -219,7 +227,8 @@ namespace CryptoCalc
             + $"\"{nameof(Platform)}\"          TEXT,"
             + $"\"{nameof(Name)}\"              TEXT,"
             + $"\"{nameof(Currency)}\"          TEXT NOT NULL,"
-            + $"\"{nameof(Balance)}\"           TEXT NOT NULL,"
+            + $"\"{nameof(Balance)}\"           INTEGER NOT NULL,"
+            + $"\"{nameof(BalanceDecimal)}\"    INTEGER NOT NULL,"
             + $"\"{nameof(DefaultWallet)}\"     INTEGER,"
             + $"\"{nameof(Note)}\"              TEXT,"
             + $"PRIMARY KEY(\"{nameof(Index)}\" AUTOINCREMENT)"

MainWindow.xaml.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.Globalization;
 using System.Windows;
 using System.Windows.Controls;
 
@@ -49,7 +50,7 @@ namespace CryptoCalc
                 new Transaction(
                     selectedWallet.Index,
                     inputCurrency.Text,
-                    inputAmount.Text,
+                    Convert.ToDecimal(inputAmount.Text, CultureInfo.InvariantCulture),
                     inputType.Text
                     )
                 );
@@ -110,7 +111,7 @@ namespace CryptoCalc
             t.WalletID = selectedWallet.Index;
             t.SaveUnixTimeNow();
             t.Currency = "SOL";
-            t.Amount = (30m * (decimal)rand.NextDouble()).ToString();
+            (t.Amount, t.AmountDecimal) = Util.SplitDecimal(Convert.ToDecimal(30m * (decimal)rand.NextDouble()));
             t.TransactionType = "BUY";
             t.Platform = "Firi";
             t.Note = "Test";
@@ -125,7 +126,7 @@ namespace CryptoCalc
             w.Platform = "Ledger";
             w.Name = "DefaultBTCWallet";
             w.Currency = "BTC";
-            w.Balance = Util.ConvToLong(0);//Convert.ToSingle(30 * rand.NextDouble());
+            w.Balance = 0;//Convert.ToSingle(30 * rand.NextDouble());
             w.DefaultWallet = 1;
             w.Note = "Main BTC Wallet";
             return w;
@@ -134,8 +135,8 @@ namespace CryptoCalc
 
         private void inputAmount_LostFocus(object sender, RoutedEventArgs e)
         {
-            inputAmount.Text = inputAmount.Text.Replace(".", ",");
+            //inputAmount.Text = inputAmount.Text.Replace(".", ",");
-            //inputAmount.Text = inputAmount.Text.Replace(",", ".");
+            inputAmount.Text = inputAmount.Text.Replace(",", ".");
         }
 
         private void currencyText_LostFocus(object sender, RoutedEventArgs e)

Util.cs

@@ -4,21 +4,33 @@ namespace CryptoCalc
 {
     public class Util
     {
+        private static readonly decimal lowestUnit = 1e18m;
+
         public static string GetConnectionString(string name = "Default")
         {
             return ConfigurationManager.ConnectionStrings[name].ConnectionString;
         }
 
-        public static ulong ConvToLong(decimal value)
+        public static ulong ConvToULong(decimal value)
         {
-            //return decimal.ToInt64(value * 1e18M);
+            return decimal.ToUInt64(value * lowestUnit);
-            return decimal.ToUInt64(value * 1e18M);
-        }
-        
-        public static decimal ConveToDecimal (ulong value)
-        {
-            return value * 1e-18M;
         }
 
+        public static decimal ConvToDecimal(ulong value)
+        {
+            return value / lowestUnit;
+        }
+
+        public static (long wholeNumber, ulong fractionNumber) SplitDecimal(decimal value)
+        {
+            long w = (long)value;
+            ulong f = ConvToULong((value % 1));
+            return (w, f);
+        }
+
+        public static decimal CombineDecimal(long amount, ulong amountDecimal)
+        {
+            return amount + ConvToDecimal(amountDecimal);
+        }
     }
 }