C# point numbers

Hello,

i have made a program it ask for a money amount .
and it spits the money for example , If you give 150 its wil says:

1 X 100
1X 50

But when i try to use 150,20 cent

it doesn't work , i don't know what im doing wrong or what i need to do?


Program.cs

using System;

namespace ConsAppl1TI34 {
  class Program {
    static void Main(string[] args) {
      ConsCode Cc = new ConsCode();
      Cc.ExecuteProgram();
      Console.ReadKey(true);
    }/*Main*/
  }/*Program*/
}/*ConsAppl1TI34*/

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ConsCode.cs

using System;

namespace ConsAppl1TI34 {
  class ConsCode {
      public void ExecuteProgram() {
      decimal Bedrag;
      uint Nr500, Nr200, Nr100, Nr50, Nr20, Nr10, Nr5, Nr2, Nr1, Nr50c, Nr20c, Nr10c, Nr5c, Nr2c, Nr1c;
      ClsMoney Cm = new ClsMoney();
      Console.Title = "Opgave 10: Splitsing geldbedrag (zonder tabel)";
      Bedrag = GiveAmount();
      Cm.SplitAmount(Bedrag, out Nr500, out Nr200, out Nr100, out Nr50, out Nr20, out Nr10, out Nr5,
      out Nr2, out Nr1, out Nr50c, out Nr20c, out Nr10c, out Nr5c, out Nr2c, out Nr1c);
      DisplayResult(Bedrag, Nr500, Nr200, Nr100, Nr50, Nr20, Nr10, Nr5,
      Nr2, Nr1, Nr50c, Nr20c, Nr10c, Nr5c, Nr2c, Nr1c);
      }/*ExecuteProgram*/

      public void DisplayResult(decimal Bedrag, uint Nr500, uint Nr200, uint Nr100, uint Nr50, uint Nr20, uint Nr10, uint Nr5, uint Nr2, uint Nr1, uint Nr50c, uint Nr20c, uint Nr10c, uint Nr5c, uint Nr2c, uint Nr1c) {
        Console.WriteLine("Een bedrag van {} Euro wordt het kortst verdeeld als:");


        Console.WriteLine("{0} X 500", Nr500);
        Console.WriteLine("{0} X 200", Nr200);
        Console.WriteLine("{0} X 100", Nr100);
        Console.WriteLine("{0} X 50", Nr50);
        Console.WriteLine("{0} X 20", Nr20);
        Console.WriteLine("{0} X 10", Nr10);
        Console.WriteLine("{0} X 5", Nr5);
        Console.WriteLine("{0} X 2", Nr2);
        Console.WriteLine("{0} X 1", Nr1);
        Console.WriteLine("{0} X 0,50", Nr50c);
        Console.WriteLine("{0} X 0,20", Nr20c);
        Console.WriteLine("{0} X 0,10", Nr10c);
        Console.WriteLine("{0} X 0,05", Nr5c);
        Console.WriteLine("{0} X 0,02", Nr2c);
        Console.WriteLine("{0} X 0,01", Nr1c);

      }
      public decimal GiveAmount()
      {
 	      Console.WriteLine("Geef een bedrag in euro in a.u.b ...");
        decimal GiveAmount = decimal.Parse(Console.ReadLine());
        return GiveAmount;
      }/*GiveAmount*/
  }/*ConsCode*/
}/*ConsAppl1TI34*/

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ClsMoney.cs

using System;

namespace ConsAppl1TI34 {
  class ClsMoney {

    public void SplitAmount(decimal Bedrag, out uint Nr500, out uint Nr200, out uint Nr100, out uint Nr50, out uint Nr20, out uint Nr10, out uint Nr5,
      out uint Nr2, out uint Nr1, out uint Nr50c, out uint Nr20c, out uint Nr10c, out uint Nr5c, out uint Nr2c, out uint Nr1c){
      
      Nr500 = 0;
      Nr200 = 0;
      Nr100 = 0;
      Nr50 = 0;
      Nr20 = 0;
      Nr10 = 0;
      Nr5 = 0;
      Nr2 = 0;
      Nr1 = 0;
      Nr50c = 0;
      Nr20c = 0;
      Nr10c = 0;
      Nr5c = 0;
      Nr2c = 0;
      Nr1c = 0;

        while (Bedrag > 500) {

          Nr500 = Convert.ToUInt32(Math.Floor(Bedrag / 500));
          Bedrag = Bedrag % 500;
        }

        while (Bedrag >= 200) {

          Nr200 = Convert.ToUInt32(Math.Floor(Bedrag / 200));
          Bedrag = Bedrag % 200;
        }

        while (Bedrag >= 100) {

          Nr100 = Convert.ToUInt32(Math.Floor(Bedrag / 100));
          Bedrag = Bedrag % 100;
        }

        while (Bedrag >= 50) {

          Nr50 = Convert.ToUInt32(Math.Floor(Bedrag / 50));
          Bedrag = Bedrag % 50;
        }

        while (Bedrag >= 20) {

          Nr20 = Convert.ToUInt32(Math.Floor(Bedrag / 20));
          Bedrag = Bedrag % 20;
        }
        while (Bedrag >= 10) {

          Nr10 = Convert.ToUInt32(Math.Floor(Bedrag / 10));
          Bedrag = Bedrag % 10;
        }
        while (Bedrag >= 5) {

          Nr5 = Convert.ToUInt32(Math.Floor(Bedrag / 5));
          Bedrag = Bedrag % 5;
        }
        while (Bedrag >= 2) {

          Nr2 = Convert.ToUInt32(Math.Floor(Bedrag / 2));
          Bedrag = Bedrag % 2;
        } while (Bedrag >= 1) {

          Nr1 = Convert.ToUInt32(Math.Floor(Bedrag / 1));
          Bedrag = Bedrag % 1;
        } while (Bedrag >= 1) {

          Nr1 = Convert.ToUInt32(Math.Floor(Bedrag / 1));
          Bedrag = Bedrag % 1;
        }
        while (Bedrag >= 0.50m) {

          Nr50c = Convert.ToUInt32(Bedrag / 0.50m);
          Bedrag = Bedrag % 1;
          
        }
    }
  }
}

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You can download the program

thank you
Opgave-02.zip