第一个c#文件就执行不了求解

Question

才写第一个c#文件就运行不了，提示找不到源文件要怎么解决

using System;
namespace RectangleAppLication
{
    class Rectangle
    {
        double width;
        double length;
        public void Acceptdetails()
        {
            width = 3.5;
            length = 4.5;
        }
        public double GetArea()
        {
            return width * length;
        }
        public void display()
        {
            Console.WriteLine("width:{0}", width);
            Console.WriteLine("length:{0}", length);
            Console.WriteLine("area:{0}", GetArea());
        }
        class AssemblyInfo
        {
            static void Main(string[] args)
            {
                Rectangle r = new Rectangle();
                r.Acceptdetails();
                r.display();
                r.GetArea();
                Console.ReadLine();
            }
        }
    }
}

Answer 1

重新创建下项目，项目不要放在中文路径里，用缺省值