feat: 添加下载进度条

server/src/Common/Number.cs

@@ -348,4 +348,37 @@ public class Number
         }
         return dstBytes;
     }
+
+    /// <summary>
+    /// 获取数字的长度
+    /// </summary>
+    /// <param name="number">数字</param>
+    /// <returns>数字的长度</returns>
+    public static int GetLength(int number)
+    {
+        // 将整数转换为字符串
+        string numberString = number.ToString();
+
+        // 返回字符串的长度
+        return numberString.Length;
+    }
+
+    /// <summary>
+    /// 计算整形的幂
+    /// </summary>
+    /// <param name="x">底数</param>
+    /// <param name="pow">幂</param>
+    /// <returns>计算结果</returns>
+    public static int IntPow(int x, int pow)
+    {
+        int ret = 1;
+        while (pow != 0)
+        {
+            if ((pow & 1) == 1)
+                ret *= x;
+            x *= x;
+            pow >>= 1;
+        }
+        return ret;
+    }
 }