C# 如何将屏幕截图保存在数量不断增加的循环中？

我目前有一个程序在循环中运行，如下所示：

else if (cmd == "streams")
                {
                    Console.WriteLine("Please enter your monitors resolution");
                    Console.WriteLine("X:");
                    int xres = Convert.ToInt32(Console.ReadLine());
                    Console.WriteLine("Y:");
                    int yres = Convert.ToInt32(Console.ReadLine());
                    Console.WriteLine("Thank you, recording now started. Note that this is still in beta. Close the software to stop recording");
                    Bitmap memoryImage;
                    memoryImage = new Bitmap(xres, yres);
                    Size s = new Size(memoryImage.Width, memoryImage.Height);
                    Graphics memoryGraphics = Graphics.FromImage(memoryImage);
                    for (; ; System.Threading.Thread.Sleep(20) )
                    {
                        //Send spacebar would go here
                        p.Send(green);
                        System.Threading.Thread.Sleep(20);
                        p.Send(regular);
                        System.Threading.Thread.Sleep(20);
                        memoryGraphics.CopyFromScreen(0, 0, 0, 0, s);
                        string str = "";
                        str = string.Format(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) +
                        @"\Screenshot.png");
                        memoryImage.Save(str);

                    }

                }

---

每次通过循环时，屏幕截图都被保存为名称“屏幕截图”。我希望每次截图时，数字都增加1，例如，截图0001，截图0002。非常感谢。

您就快到了，只需将for循环更改为：

for (; ; System.Threading.Thread.Sleep(20) )
{
    //Send spacebar would go here
    p.Send(green);
    System.Threading.Thread.Sleep(20);
    p.Send(regular);
    System.Threading.Thread.Sleep(20);
    memoryGraphics.CopyFromScreen(0, 0, 0, 0, s);
    string str = "";
    str = string.Format(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) +
    @"\Screenshot.png");
    memoryImage.Save(str);

}

…致：

for (var i = 0; ; i++)   // <----- note 'i'
{
    System.Threading.Thread.Sleep(20); // move sleep to here
    //Send spacebar would go here
    p.Send(green);
    System.Threading.Thread.Sleep(20);
    p.Send(regular);
    System.Threading.Thread.Sleep(20);
    memoryGraphics.CopyFromScreen(0, 0, 0, 0, s);
    string str = "";
    str = string.Format(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) +
                        $@"\Screenshot{i}.png");  // use 'i' here
    memoryImage.Save(str);

}

---

for（var i=0；；i++）//关于
{i:d4}
？：）@约翰哦！是的，这看起来很像