UIElement

using System;

internal class Program
{
    static int MaxPercent = 100;
    static int LengthBar = 10;
    static char Sing = '#';
    static char EmtySing = '_';

    static void Main(string[] args)
    {
        DrawBar(40, ConsoleColor.Green, 0, 0);
        DrawBar(80, ConsoleColor.Blue, 30, 0);
        Console.ReadKey();
    }

    static void DrawBar(int filledPercent, ConsoleColor color, int positionX, int positionY)
    {
        int remainingPoints = filledPercent * LengthBar / MaxPercent;
        int emptyPoints = LengthBar - remainingPoints;

        ConsoleColor defaultColor = Console.ForegroundColor;

        string bar = "";

        FillBar(ref bar, remainingPoints, Sing);
        FillBar(ref bar, emptyPoints, EmtySing);

        Console.SetCursorPosition(positionX, positionY);
        Console.Write('[');
        Console.ForegroundColor = color;
        Console.Write(bar);
        Console.ForegroundColor = defaultColor;
        Console.Write(']');
    }

    static void FillBar(ref string bar, int cauntPoint, char sing)
    {
        for (int i = 0;i < cauntPoint;i++)
        {
            bar += sing;
        }
    }
}