egwcorelib/EgwCoreLib.BlazorTest/Pages/TestMultiLine.razor.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Components;
using System.Net.Http;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Components.Authorization;
using Microsoft.AspNetCore.Components.Forms;
using Microsoft.AspNetCore.Components.Routing;
using Microsoft.AspNetCore.Components.Web;
using Microsoft.AspNetCore.Components.Web.Virtualization;
using Microsoft.JSInterop;
using EgwCoreLib.BlazorTest;
using EgwCoreLib.BlazorTest.Components;
using EgwCoreLib.BlazorTest.Shared;
using EgwCoreLib.Razor;
using EgwCoreLib.Razor.Data;
using static EgwCoreLib.Razor.Data.chartJsData;

namespace EgwCoreLib.BlazorTest.Pages
{
    public partial class TestMultiLine
    {

        protected override async Task OnInitializedAsync()
        {
            currDS = null;
            await Task.Delay(200);
            await setupData();
        }

        protected List<chartJsData.chartJsDataSetXY>? currDS { get; set; } = null;

        protected List<string>? ChLabels { get; set; } = null;

        protected Random rnd = new Random();

        private async Task setupData()
        {
            currDS = null;
            List<chartJsData.chartJsDataSetXY> currDemo = new List<chartJsData.chartJsDataSetXY>();
            ChLabels = new List<string>();
            int numMesi = 6;
            for (int iMese = 1; iMese <= numMesi; iMese++)
            {
                ChLabels.Add($"{iMese:00}");
            }
            for (int iSerie = 0; iSerie < 4; iSerie++)
            {
                // simulo 12 mesi...
                List<chartJsXY> simData = new List<chartJsXY>();
                for (int iMese = 1; iMese <= numMesi; iMese++)
                {
                    simData.Add(new chartJsXY() { x = iMese, y = iMese + rnd.Next(-4, 4) });
                }
                int rCol = rnd.Next(0, 155);
                int gCol = rnd.Next(0, 155);
                int bCol = rnd.Next(0, 100);

                chartJsData.chartJsDataSetXY singleData = new chartJsData.chartJsDataSetXY()
                {
                    label = $"Data_{iSerie:00}",
                    data = simData,
                    borderColor = $"#{10 + rCol:X2}{30 + gCol:X2}{100 + bCol:X2}",
                    backgroundColor = $"rgba({60 + rCol},{80 + gCol},{155 + bCol},0.3)",
                    lineTension = 0,
                    stepped = iSerie % 5 == 0,
                    fill = iSerie % 3 == 0 ? "start" : "false"
                };
                // aggiungo
                currDemo.Add(singleData);
            }
            currDS = currDemo;
            await Task.Delay(10);
        }

        protected string[] histLabel(int num)
        {
            List<string> answ = new List<string>();
            for (int i = 0; i < 50; i++)
            {
                answ.Add($"LBL_{i:00}");
            }
            return answ.ToArray();
        }
        protected string[] histData(int num)
        {
            List<string> answ = new List<string>();
            for (int i = 0; i < 50; i++)
            {
                answ.Add($"{(double)(rnd.Next(10, 100)) / 10 + i}");
            }
            return answ.ToArray();
        }
    }
}