private decimal GetRandomMoney(RedPocket redPackage, decimal min, int n)
{
// RemainCount 剩余的红包数量
// Balance 剩余的钱
if (redPackage.RemainCount <= 0)
{
return(0);
}
if (redPackage.RemainCount == 1)
{
redPackage.RemainCount--;
return(Math.Round(redPackage.Balance * n) / n);
}
Random r = new Random();
decimal max = redPackage.Balance / redPackage.RemainCount * 2;
decimal money = (decimal)r.NextDouble() * max;
money = money <= min ? min : money;
money = Math.Floor(money * n) / n;
redPackage.RemainCount--;
redPackage.Balance -= money;
return(money);
}
public void TestMethod1()
{
const int count = 10;
var redPocket = new RedPocket()
{
Balance = 1000.12345678M, RemainCount = count
};
for (int i = 0; i < count; i++)
{
var v = GetRandomMoney(redPocket, 0.00000001M, 100000000);
System.Diagnostics.Debug.Print(v.ToString());
}
}