Top 10 web performance killers 

Top 10 CSS Bad Practices 

The Top 6 Developer Podcasts

The following high-level features are planned for the ASP.NET Core 2.1 release:

SignalR - Real-time web framework on ASP.NET Core (aspnet/SignalR#394)
HTTPS - On by default and easy to configure (aspnet/Home#2308)
GDPR compliance - Templates updated with new privacy features (aspnet/Security#1561, aspnet/Identity#1341)
Web API conventions - Rich Swagger support without attributes (aspnet/Mvc#6870, aspnet/Mvc#6784)
IHttpClientFactory - HttpClient as a service, handle cross-cutting concerns like caching, retry logic, timeouts and circuit breakers (aspnet/HttpClientFactory#42)
ASP.NET Core Module in-proc hosting - 6x the throughput on IIS! Better startup error handling (aspnet/AspNetCoreModule#265)
Razor pages improvements - Support for areas, ~/Pages/Shared (aspnet/Mvc#6926, aspnet/Mvc#7193)
MVC functional test fixture - Easily test your MVC apps end-to-end (aspnet/Mvc#6233)
Build-time Razor - Compile Razor pages and views as part of your build, improved startup performance (aspnet/Razor#1809)
UI as a library - Package Razor pages and views as reusable libraries (aspnet/Razor#1809)
Identity UI package and scaffolder - Add identity to any application (aspnet/Home#2311)
WebHooks - Handle WebHook notifications from ASP.NET Core apps (aspnet/WebHooks#5)

In simple terms, before we write a line of code, we start each sprint planning session by outlining a blog post describing what our next release will be.

<link href="Content/kendo.dataviz.min.css" rel="stylesheet" />
<link href="Content/kendo.dataviz.default.min.css" rel="stylesheet" />

<div id="chart"></div>

<div id="chart" style="width: 400px; height: 600px"></div>

$("#chart").kendoChart();

$("#chart").kendoChart({
    title: {
         text: "چارت آزمایشی"
    }
});

$("#chart").kendoChart({
    title: {
         text: "عنوان چارت"
    },
    series: [
         { name: "داده‌های چارت", data: [200, 450, 300, 125] }
    ]
});

$("#chart").kendoChart({
                title: {
                    text: "عنوان چارت"
                },
                series: [
                     {
                         name: "داده‌های چارت",
                         data: [200, 450, 300, 125]
                     }
                ],
                categoryAxis: {
                    categories: [2000, 2001, 2002, 2003]
                }
            });

public class ProductsController : ApiController
    {
        public IEnumerable<ProductViewModel> Get()
        {
            var products = _productService.GetAllProducts();
            var query = products.GroupBy(p => p.Name).Select(p => new ProductViewModel
            {
                Value = p.Key,
                Count = p.Count()
            });
            return query;
        }
    }

    public class ProductViewModel
    {
        public string Value { get; set; }
        public int Count { get; set; }
    }

var productsDataSource = new kendo.data.DataSource({
                transport: {
                    read: {
                        url: "api/products",
                        dataType: "json",
                        contentType: 'application/json; charset=utf-8',
                        type: 'GET'
                    }
                },
                error: function (e) {
                    alert(e.errorThrown.stack);
                },
                pageSize: 5,
                sort: { field: "Id", dir: "desc" }
            });

            $("#chart").kendoChart({
                title: {
                    text: "عنوان چارت"
                },
                dataSource: productsDataSource,
                series: [
                    {
                        field: "Count",
                        categoryField: "Value",
                        aggregate: "sum"
                    }
                ]
            });

(function($) {
    $.fn.ShowChart = function(options) {
        var defaults = {
            url: '/',
            text: 'نمودار دایره ایی',
            theme: 'blueOpal',
            font: '13px bbc-nassim-bold',
            legendPosition: 'left',
            seriesField: 'Count',
            seriesCategoryField: 'Value',
            titlePosition: 'top',
            chartWidth: 400,
            chartHeight: 400
        };
        var options = $.extend(defaults, options);
        return this.each(function() {
            var chartDataSource = new kendo.data.DataSource({
                transport: {
                    read: {
                        url: options.url,
                        dataType: "json",
                        contentType: 'application/json; charset=utf-8',
                        type: 'GET'
                    }
                },
                error: function (e) {
                    // handle error
                }
            });
            $(this).kendoChart({
                chartArea: {
                    height: options.chartHeight
                },
                theme: options.theme,
                title: {
                    text: options.text,
                    font: options.font,
                    position: options.titlePosition
                },
                legend: {
                    position: options.legendPosition,
                    labels: {
                        font: options.font
                    }
                },
                seriesDefaults: {
                    labels: {
                        visible: false,
                        format: "{0}%"
                    }
                },
                dataSource: chartDataSource,
                series: [
                    {
                        type: "pie",
                        field: options.seriesField,
                        categoryField: options.seriesCategoryField,
                        aggregate: "sum",
                    }
                ],
                tooltip: {
                    visible: true,
                    template: "${category}: ${value}",
                    font: options.font
                }
            });
            
        });
    };
})(jQuery);

$('#chart').ShowChart({
                        url: "/Report/ByUnit",
                        legendPosition: "bottom"
});

همانطور که میبینید گره دوم که "پوشه چهارم45" نام دارد شامل سه فرزند است که در رشته داده شده با عنوان item شناخته شده است. حال باید این رشته با برنامه نویسی سی شارپ جداسازی کرد :

string serialized;
Dictionary<int, int> numbers = new Dictionary<int, int>();   

public ActionResult SaveMenu(string serial)
        {
            var newfolders = new List<Folder>();
            serialized = serial;
            calculte_serialized(0);
            return RedirectToAction("Index");
        }

void calculte_serialized(int parent)
        {
            while (serialized.Length > 0)
            {
                var id_index=serialized.IndexOf("id");
                if (id_index == -1)
                {
                    return;
                }
                serialized = serialized.Substring(id_index + 5);
                var quote_index = serialized.IndexOf("\"");
                var id=serialized.Substring(0, quote_index);
                numbers.Add(int.Parse(id), parent);
                serialized = serialized.Substring(quote_index);
                var condition = serialized.Substring(0,3);
                switch (condition)
                {
                    case "\"},":
                        break;
                    case "\",\"":
                        calculte_serialized(int.Parse(id));
                        break;
                    case "\"}]":
                        return;
                        break;
                    default:
                        break;
                }
            }
        }

calculte_serialized با گرفتن 0 کار خود را شروع میکند یعنی از گره هایی که پدر ندارند و تمام id‌ها را همراه با پدرشان در یک دیکشنری میریزد و هرکجا که به فرزندی برخورد به صورت بازگشتی فراخوانی میشود. پس از اجرای کامل آن ما درخت را در یک دیکشنری به صورت عنصرهای مجزا در اختیار داریم که میتوانیم در پایگاه داده ذخیره کنیم.