如何編寫代碼來循環更改文本在屏幕上的位置

Question

你好，我的問題是，代碼打印在屏幕上，但是當文本到達命令行的一側時，它會崩潰。我怎樣才能將文本限制在第10行和第30行之內。在代碼中，我在IF語句中創建了一個IF語句，以測試變量Y是否等於10或= 30，以便限制屏幕上的文本，但它不起作用。任何幫助？感謝

代碼：

static void Main(string[] args) 
    { 
     Menu(); 
    } 

    static void Menu() 
    { 
     Random random = new Random(); 

     sbyte X = 1; 

     sbyte Y = 20; 

     while (true) 
     { 

      float randomNumber = random.Next(0, 100); 

      if (randomNumber <50) 
      { 
       if (Y >= 10) 
       { 
        Y = Y; 
       } 
       else 
       { 
        Y++; 
       } 

      } 
      else if (randomNumber >50) 
      { 
       if (Y >= 30) 
       { 
        Y = Y; 
       } 
       else 
       { 
        Y--; 
       } 

      } 

      X++; 

      PrintToScreendynamic(X, Y, "-"); 


      Thread.Sleep(200); 

     } 

    } 

    static void PrintToScreendynamic(sbyte X, sbyte Y, string text) 
    { 

     Console.SetCursorPosition(X, Y); 

     Console.Write(text); 

    } 

} 

Answer 1

好吧，我已經運行你的代碼，並把它清理了一下。

評論已包括在內。

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.Threading; 
using System.Threading.Tasks; 

namespace ConsoleApplication1 
{ 
class Program 
{ 
    static void Main(string[] args) { 
     Menu(); 
    } 

    static void Menu() { 

     //The console starts at the top-left corner from point 0,0 (row 0, column 0). 
     //To find the number of columns, use the property Console.BufferWidth. 
     //This returns the number of characters which can be displayed on a single line from left to right. 
     //For example, If the number of columns is 80, the columns are numbered from 0 to 79, so the highest possible value of X is 79. 
     int MaxWidth = Console.BufferWidth - 1; 

     Random random = new Random(); 
     sbyte X = 1; 
     sbyte Y = 20; 
     float randomNumber; 


     /** 
     Don't use a loop which says while(true), or you will have to do tests inside the loop 
     to see where it should end. 
     We know how many columns the console has, so stop the loop when X is too big to increment 
     within that limit. 
     */ 
     while (X < MaxWidth) { 
      randomNumber = random.Next(0, 100); 

      /** 
      You only need to check for a condition that will cause a change. 
      If you have a check which results in Y = Y, you're adding code that won't be run. 
      So, instead of saying if (y >= 10) { Y = Y } else { do something }, 
      flip it around and say if (y <= 10) { do something } 
      * **/ 
      if (randomNumber < 50) { 
       //If Y is greater than or equal to 10, make Y smaller by 1. 
       //This prevents the cursor from moving to a line closer 
       //to the top of the console than Line 10. 
       if (Y >= 10) { 
        Y--; 
       } 
      } else if (randomNumber > 50) { 
       //If Y is less than or equal to 30, make Y largerby 1. 
       //This prevents the cursor from moving to a line closer 
       //to the bottomof the console than Line 30. 
       if (Y <= 30) { 
        Y++; 
       } 
      } 

      X++; 

      PrintToScreendynamic(X, Y, "-"); 
      Thread.Sleep(200); 
     } 
    } 

    static void PrintToScreendynamic(sbyte X, sbyte Y, string text) { 
     Console.SetCursorPosition(X, Y); 
     Console.Write(text); 
    } 
} 

}