csharp 返回一个随机值（int，double，bool，string）。

Posted 2021-05-12

int Random(int x, int y)
{
    Random random = new Random();
    int randomNumber = random.Next(x, y);

    return randomNumber;
}

double Random(double x, double y)
{
    Random random = new Random();
    double randomNumber = random.NextDouble() * (y - x) + x;

    return randomNumber;
}

bool Random()
{
    int x = Numbers.Random(1, 2);
    return x == 1;
}

string Random(int length)
{
    const string allowedChars = 
      "ABCDEFGHJKLMNOPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz0123456789!@$?_-";
    var chars = new char[length];
    var rd = new Random();

    for (int i = 0; i < length; i++)
    {
        chars[i] = allowedChars[rd.Next(0, allowedChars.Length)];
    }

    return new string(chars);
}