作为一名新的C#程序员，我有许多问题需要解决，特别是这个问题涉及到MouseEventArgs e及其与MouseButtons.Left的交互似乎不兼容，
我可能对MouseEventArgs的真正功能或用法缺乏了解，这是导致此问题的原因。
有人能解释一下为什么我的尝试是不正确的吗？正确的解决方案是什么？以及我如何才能防止将来遇到类似的问题？

private void BtnSize_MouseDown(object sender, MouseEventArgs e)
{
    // Issue exists here, e == MouseButtons.Left does not work
    // why? Isn't the purpose of MouseEventArgs e to track the 
    // mouse input (aka left click?)
    if (e == MouseButtons.Left)
    {
        // clear canvas
        Ball.Loading = true;

        while (ballsAdded < 25 && ballsRemoved < 1000)
        {
            Ball newBall = new Ball(ballRadiusSet);

            // Contains bool will force balls to spawn apart from one another
            if (!soManyBalls.Contains(newBall))
            {
                soManyBalls.Add(newBall);

                ballsAdded++;
            }

            else
            {
                ballsRemoved++;
            }
        }

        foreach (Ball listBall in soManyBalls)
        {
            listBall.AddBall();
        }

        // render canvas
        Ball.Loading = false;

        Text = $"Loaded {ballsAdded} distinct balls with {ballsRemoved} discards";

        ballsAdded = 0;
        ballsRemoved = 0;
    }

    if (e == MouseButtons.Right)
    {
        // clear canvas
        Ball.Loading = true;

        while (ballsAdded < 25 && ballsRemoved < 1000)
        {
            Ball newBall = new Ball(ballRadiusSet);

            // Invert Contains bool so balls form directly connected to one another
            if (soManyBalls.Contains(newBall))
            {
                soManyBalls.Add(newBall);

                ballsAdded++;
            }

            else
            {
                ballsRemoved++;
            }
        }

        foreach (Ball listBall in soManyBalls)
        {
            listBall.AddBall();
        }

        // render canvas
        Ball.Loading = false;

        Text = $"Loaded {ballsAdded} distinct balls with {ballsRemoved} discards";

        ballsAdded = 0;
        ballsRemoved = 0;
    }
}