怎么把 KeyCode 转换成 String 类型

using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;


class Empy : Form
{
    public static void Main()
    {
        Application.Run(new Empy());
    }
    protected override void OnKeyDown(KeyEventArgs e)
    {
        base.OnKeyDown(e);
        this.Text = (char)e.KeyCode;
    }
    
}

[解决办法]

((int)e.KeyCode).ToString()