Synchronization of old projects

Part1

C#入门实践教程/练习题/Program.cs

@@ -0,0 +1,68 @@
+Console.ForegroundColor = ConsoleColor.Yellow; //设置文字颜色为绿色
+Console.BackgroundColor = ConsoleColor.Red; //设置背景颜色为黑色
+Console.SetWindowSize(50, 25);
+Console.SetBufferSize(50, 25);
+Console.CursorVisible = false;
+try
+{
+    char dis;
+    int x=0, y=0;
+    while (true)
+    {
+        Console.Clear();
+        Console.SetCursorPosition(x, y);
+        Console.Write("■");
+        dis = Console.ReadKey(true).KeyChar;
+        switch (dis)
+        {
+            case 'w':
+            case 'W':
+                y--;
+                if (y < 0)
+                {
+                    y = 0; //防止光标位置小于0
+                }
+                break;
+            case 'a':
+            case 'A':
+                x -= 2;
+                if (x < 0)
+                {
+                    x = 0; //防止光标位置小于0
+                }
+                break;
+            case 's':
+            case 'S':
+                y++;
+                if (y > Console.BufferHeight - 1)
+                {
+                    y = Console.BufferHeight - 1; //防止光标位置超过缓冲区高度
+                }
+                break;
+            case 'd':
+            case 'D':
+                x += 2;
+                if ( x > Console.BufferWidth - 2)
+                {
+                    x = Console.BufferWidth - 2;
+                    
+                }
+                break;
+        }
+        
+        
+        
+        
+    }
+            
+}catch (Exception ex)
+{
+    Console.WriteLine($"发生异常: {ex.Message}");
+}
+finally
+{
+    Console.ResetColor(); //重置颜色为默认颜色
+    Console.Clear(); //清空控制台内容
+    Console.WriteLine("程序结束");
+    Environment.Exit(0);
+}

C#入门实践教程/练习题/控制台相关练习题.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>