【C# 基础应用】我的第一个App，不容易——随机生成小人网站，asp.net core

Index page

Welcome page

生成很多不同的小人哦~我是如何实现这么stupid but interesting的程序呢？我用了ASP.NET Core

画小人的话，用了一个很stupid的辅助类， 自己写的，小人脸宽21，然后鼻子占1，剩下的眼睛，鼻子，脸，耳朵，分分看。

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

namespace game1.Controllers
{
    public class DrawingHelper
    {
        public static string randomEye = @"-|@!~^+'o0O⊙";
        public static string randomMouth = @"_x*oO~DVv";
        public static string randomHair = randomEye + randomMouth;
        public static List<StringBuilder> Draw(int FaceCount)
        {
            int RowWidth = 21;
            int hairWidth = 15;
            
            string leftEar = "(";
            string rightEar = ")";
            string leftFace = "|";
            string nose = "*";

            var faces = new List<StringBuilder>();
            
            for (int t = 1; t <= FaceCount; t++)
            {
                StringBuilder sb = new StringBuilder();
                string eye = GetRandomPart(randomEye, 1);
                string mouth = GetRandomPart(randomMouth, 1);
                string hairStyle = GetRandomPart(randomHair, 1);
                DrawHair(RowWidth, hairWidth, hairStyle,sb);
                DrawCartoon(leftEar, rightEar, leftFace, eye, nose, mouth,sb);
                sb.Append("
");
                faces.Add(sb);
            }
            return faces;
            
        }

        private static void DrawHair(int RowWidth, int hairWidth, string hairStyle,StringBuilder sb)
        {
            StringBuilder hair = new StringBuilder();
            for (int i = 1; i <= hairWidth - 2; i++)
            {
                hair.Append(hairStyle);
            }
            sb.AppendLine((" " + hair + " ").PadLeft((RowWidth - hairWidth) / 2 + hairWidth, ' '));
            sb.AppendLine(("|" + hair + "|").PadLeft((RowWidth - hairWidth) / 2 + hairWidth, ' '));
        }
        public static string GetRandomPart(string pwdchars, int pwdlen)
        {
            
            string tmpstr = "";
            int iRandNum;
            Thread.Sleep(100);
            long tick = DateTime.Now.Ticks;
            Random rnd = new Random((int)(tick & 0xffffffffL) | (int)(tick >> 32));
            for (int i = 0; i < pwdlen; i++)
            {
                iRandNum = rnd.Next(pwdchars.Length);
                tmpstr += pwdchars[iRandNum];
            }
            return tmpstr;
        }
        private static void DrawCartoon(string leftEar, string rightEar, string leftFace, string eye, string nose, string mouth, StringBuilder sb)
        {
            //Print left
            PrintLeftParts(leftEar, 3,sb);
            PrintLeftParts(leftFace, 0,sb);
            PrintLeftParts(eye, 2,sb);
            PrintLeftParts(nose, 2,sb);
            //Pring right
            PrintLeftParts(eye, 2, sb);
            PrintLeftParts(leftFace, 2,sb);
            PrintLeftParts(rightEar, 0,sb);
            //Print down face
            sb.AppendLine();
            PrintLeftParts(leftFace, 4,sb);
            PrintLeftParts(mouth, 5,sb,'_');
            PrintLeftParts(leftFace, 5, sb,'_');
            sb.AppendLine();
            sb.AppendLine();

        }

        static void PrintLeftParts(string organName, int leftPad, StringBuilder sb,char paddingchar = ' ')
        {
            for( int i=0; i < leftPad; i++)
            {
                sb.Append(paddingchar);
            }
            sb.Append(organName);
        }
    }
}

上一个HelloWorldController，也是整个程序唯一的controller。

using game1.Models;
using Microsoft.ApplicationInsights;
using Microsoft.AspNetCore.Mvc;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.Encodings.Web;

// For more information on enabling MVC for empty projects, visit http://go.microsoft.com/fwlink/?LinkID=397860

namespace game1.Controllers
{
    public class HelloWorldController : Controller
    {
        TelemetryClient tc = new TelemetryClient();
        // 
        // GET: /HelloWorld/

        [HttpPost]
        public ActionResult Index(string userName, int count)
        {
            FaceInfo fi = new FaceInfo();
            fi.Name = userName;
            fi.FaceCount = count;
            return RedirectToAction("Welcome",fi);
        }
        [HttpGet]
        public ActionResult Index()
        {

            return View();
        }
        public ActionResult About()
        {

            return View();
        }
        // 
        // GET: /HelloWorld/Welcome/ 

        //public string Welcome(string name, int ID = 1)
        //{
        //    tc.TrackEvent("welcome");
        //    return HtmlEncoder.Default.Encode($"Hello {name}, ID: {ID}");
        //}
        public ActionResult Welcome(FaceInfo fi)
        {
            tc.TrackEvent("Generating....");
            ViewData["Message"] = "Hello " + fi.Name;
            ViewData["FaceCount"] = fi.FaceCount;
            List<String> faces = DrawingHelper.Draw(fi.FaceCount).Select(t => t.ToString()).ToList();
            return View(faces);
        }
    }
}

omg~我还有一个model呢~ model好像是实现了在controller里传值。

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

namespace game1.Models
{
    public class FaceInfo
    {
        public int FaceCount { get; set; }
        public string Name { get; set; }
    }
}

Index.cshtml里很简单

俩输入框，一个按钮

@model game1.Models.FaceInfo
@{
    ViewData["Title"] = "Index";
}

<h2>--------------HELLO--------------</h2>
<hr />
@using (Html.BeginForm())
{
    <p>User name:</p>
    <input type="text" name="userName" />
    <p>Face count:</p>
    <input type="text" name="count" />
    <p></p>
    <input type="submit" value="Try It!"/>
}>

<p>Hello to many little faces!</p>

Welcome.cshtml似乎更简单！

@{
    ViewData["Title"] = "Welcome";
}
@model List<String>
<h2>Welcome to Winnie's app</h2>

<p>This is my first web app.</p>

@foreach(var element in Model)
{
    <li>@ViewData["Message"]</li>
    <pre>@Html.DisplayFor(m=>element)</pre>
}

嗯虽然简单，但是宝宝也忙乎了一天~