TextView tv=new TextView(this);
tv.getWidth(); //return 0
layout.add(tv);
tv.getWidth(); //return 0

TextView tv=new TextView(this);
tv.post(new Runnable() {
                    @Override
                    public void run() {
                        tv.getWidth(); //return x
                    }
                });

//set textview width depend on screen width
private void BatchSizeOperation()
{
//get width of next node between cumbs
Bitmap tinyBmap = BitmapFactory.decodeResource(context.getResources(), tinyNextNodeImage);
int tinysize=tinyBmap.getWidth();
//get sum of nodes
tinysize*=(textViews.size()-1);
...
}

  //get width size of screen(layout is screen here)
        int screenWidth=GetLayoutWidthSize();

        //get sum of arrows and cumbs width
        int sumtvs=tinysize;
        for (TextView tv : textViews) {

            int width=tv.getWidth();
            sumtvs += width;
        }

    private int GetLayoutWidthSize()
    {
        int width=layout.getWidth();
        int padding=layout.getPaddingLeft()+layout.getPaddingRight();
        width-=padding;
        return width;
    }

    private void  BatchSizeOperation()
    {
        ....

    //if sum of cumbs is less than screen size the state is good so return same old textviews
        if(sumtvs<screenWidth)
            return ;


        if(textViews.size()>3)
        {
            //make fake path
            MakeFakePath();

            //clear layout and add textviews again
            AddTextViewsOnLayout();
        }

        //get free space without next nodes -> and spilt rest of space to textviews count to get space for each textview
        int freespace =screenWidth-tinysize;
        int each_width=freespace/textViews.size();

        //some elements have less than each_width,so we should leave size them and calculate more space again
        int view_count=0;
        for (TextView tv:textViews)
        {
            if (tv.getWidth()<=each_width)
                freespace=freespace-tv.getWidth();
            else
                view_count++;
        }
        if (view_count==0) return;

        each_width=freespace/view_count;
        for (TextView tv:textViews)
        {
            if (tv.getWidth()>each_width)
                tv.setWidth(each_width);
        }


    }

 //if elements are so much(mor than 3),we make a fake path to decrease elements
    private void MakeFakePath()
    {
        //we make 4 new elements that index 1 is fake element and has a rest of real path in its heart
        //when user click on it,path would be opened
        textViews=new ArrayList<>(4);
        TextView[] tvs=new TextView[4];
        int[] positions= {0,items.size()-3,items.size()-2,items.size()-1};

        for (int i=0;i<4;i++)
        {
            //request for new textviews
            tvs[i]=MakeTextView(positions[i],items.get(positions[i]).getId());

            if(i!=1)
                tvs[i].setText(items.get(positions[i]).getDiplayText());
            else {
                tvs[i].setText("...");
                //override click event and change it to part of code to open real path by call setposition method and redraw path
                tvs[i].setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        int pos = items.size() - 3;
                        int id = items.get(pos).getId();
                        SetPosition(items.size() - 3);
                        clickListener.onClick(pos, id);
                    }
                });
            }
            textViews.add(tvs[i]);
        }
    }

<ItemGroup>
    <Content Update="wwwroot\**">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </Content>
  </ItemGroup>

<ItemGroup>
    <None Update="wwwroot\**">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </None>
  </ItemGroup>

System.InvalidOperationException: Cannot provide a value for property 'AuthenticationStateProvider' on type 'Microsoft.AspNetCore.Components.Authorization.CascadingAuthenticationState'. There is no registered service of type 'Microsoft.AspNetCore.Components.Authorization.AuthenticationStateProvider'.

• استفاده از متغیرهای اولیه بجای ساختارهای کوچک برای کارهای اولیه مانند Currency, DateTime, PhoneNumber 
  
• استفاده از constant‌ها برای کد کردن اطلاعات مانند USER_ADMIN_ROLE = 1 
  
• استفاده از constant‌های رشته‌ای به عنوان نام فیلدها در آرایه‌های داده 
  

using System;
using System.Collections.Generic;
using System.IO;
using System.Reflection;
using System.Text.RegularExpressions;
using System.Web;
using System.Web.Script.Services;
using System.Web.Services;
using System.Web.UI;
using System.Web.UI.HtmlControls;

namespace AjaxTest
{
   public class KeyVal
   {
       public string Key { set; get; }
       public object Value { set; get; }
   }

   /// <summary>
   /// Summary description for Ajax
   /// </summary>
   [ScriptService]
   [WebService(Namespace = "http://tempuri.org/")]
   [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
   [System.ComponentModel.ToolboxItem(false)]
   public class Ajax : WebService
   {
       /// <summary>
       /// Removes Form tags using Regular Expression
       /// </summary>
       private static string cleanHtml(string html)
       {
           return Regex.Replace(html, @"<[/]?(form)[^>]*?>", string.Empty, RegexOptions.IgnoreCase);
       }

       /// <summary>
       /// تبدیل یک یوزر کنترل به معادل اچ تی ام ال آن
       /// </summary>
       /// <param name="path">مسیر یوزر کنترل</param>
       /// <param name="properties">لیست خواص به همراه مقادیر مورد نظر</param>
       /// <returns></returns>
       /// <exception cref="NotImplementedException"><c>NotImplementedException</c>.</exception>
       [WebMethod(EnableSession = true)]
       [ScriptMethod(ResponseFormat = ResponseFormat.Json)]
       public string RenderUserControl(string path,
             List<KeyVal> properties)
       {
           Page pageHolder = new Page();

           UserControl viewControl =
              (UserControl)pageHolder.LoadControl(path);

           viewControl.EnableViewState = false;

           Type viewControlType = viewControl.GetType();

           if (properties != null)
               foreach (var pair in properties)
               {
                   if (pair.Key != null)
                   {
                       PropertyInfo property =
                           viewControlType.GetProperty(pair.Key);

                       if (property != null)
                       {
                           if (pair.Value != null) property.SetValue(viewControl, pair.Value, null);
                       }
                       else
                       {
                           throw new NotImplementedException(string.Format(
                                                                 "UserControl: {0} does not have a public {1} property.",
                                                                 path, pair.Key));
                       }
                   }
               }

           //Form control is mandatory on page control to process User Controls
           HtmlForm form = new HtmlForm();

           //Add user control to the form
           form.Controls.Add(viewControl);

           //Add form to the page
           pageHolder.Controls.Add(form);

           //Write the control Html to text writer
           StringWriter textWriter = new StringWriter();

           //execute page on server
           HttpContext.Current.Server.Execute(pageHolder, textWriter, false);

           // Clean up code and return html
           return cleanHtml(textWriter.ToString());
       }       
   }
}

 <system.web.extensions>
   <scripting>
     <webServices>
       <jsonSerialization maxJsonLength="10000000"></jsonSerialization>
     </webServices>
   </scripting>
 </system.web.extensions>

$.fn.advloaduc = function(options) {
   var defaults = {
       webServiceName: 'Ajax.asmx', //نام فایل وب سرویس ما
       renderUCMethod: 'RenderUserControl', //متد وب سرویس
       ucMethodJsonParams: '{path:\'\'}',//پارامترهایی که قرار است پاس شوند
       completeHandler: null //پس از پایان کار وب سرویس این متد جاوا اسکریپتی فراخوانی می‌شود
   };
   var options = $.extend(defaults, options);

   return this.each(function() {
       var obj = $(this);
       obj.prepend("<div align='center'> لطفا اندکی تامل بفرمائید... <img src=\"images/loading.gif\"/></div>");

       $.ajax({
           type: "POST",
           url: options.webServiceName + "/" + options.renderUCMethod,
           data: options.ucMethodJsonParams,
           contentType: "application/json; charset=utf-8",
           dataType: "json",
           success:
                   function(msg) {
                       obj.html(msg.d);

                       // if specified make callback and pass element
                       if (options.completeHandler)
                           options.completeHandler(this);
                   },
           error:
                   function(XMLHttpRequest, textStatus, errorThrown) {
                       obj.html("امکان اتصال به سرور در این لحظه مقدور نیست. لطفا مجددا سعی کنید.");
                   }
       });
   });
};

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="part1.ascx.cs" Inherits="TestJQueryAjax.part1" %>
<asp:Label runat="server" ID="lblData" ></asp:Label>

using System;
using System.Threading;

namespace TestJQueryAjax
{
   public partial class part1 : System.Web.UI.UserControl
   {
       public string Text1 { set; get; }
       public string Text2 { set; get; }

       protected void Page_Load(object sender, EventArgs e)
       {
           Thread.Sleep(3000);
           if (!string.IsNullOrEmpty(Text1) && !string.IsNullOrEmpty(Text2))
               lblData.Text = Text1 + "<br/>" + Text2;
       }
   }
}

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="TestJQueryAjax._Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
   <title></title>

   <script src="js/jquery.js" type="text/javascript"></script>
   <script src="js/jquery.advloaduc.js" type="text/javascript"></script>
   <script src="js/json2.js" type="text/javascript"></script>

   <script type="text/javascript">
       function showAlert() {
           alert('finished!');
       }

       //تشکیل پارامترهای متد وب سرویس جهت ارسال به آن
       var fileName = 'part1.ascx';
       var props = [{ 'Key': 'Text1', 'Value': 'سطر یک' }, { 'Key': 'Text2', 'Value': 'سطر 2'}];
       var jsonText = JSON.stringify({ path: fileName, properties: props });

       $(document).ready(function() {
           $("#loadMyUc").advloaduc({
               webServiceName: 'Ajax.asmx',
               renderUCMethod: 'RenderUserControl',
               ucMethodJsonParams: jsonText,
               completeHandler: showAlert
           });
       });
  
   </script>

</head>
<body>
   <form id="form1" runat="server">
   <div id="loadMyUc">
   </div>
   </form>
</body>

</html>

An unhandled exception of type 'System.Reflection.TargetInvocationException' occurred in mscorlib.dll

Additional information: Exception has been thrown by the target of an invocation.

private void button1_Click(object sender, EventArgs e)
        {
            if (_worker != null && _worker.IsBusy)
            {
                return;
            }

            _worker = new BackgroundWorker
            {
                WorkerReportsProgress = true,
                WorkerSupportsCancellation = true
            };
            _worker.DoWork += workerDoWork;
            _worker.ProgressChanged += workerProgressChanged;
            _worker.RunWorkerCompleted += workerRunWorkerCompleted;
            _worker.RunWorkerAsync();
        }

private void workerDoWork(object sender, DoWorkEventArgs e)
        {
            //var interval = (int)(1000 / _capture.Fps);
            Image image;
            while ((image = _capture.QueryFrame().ToBitmap()) != null &&
                    _worker != null && !_worker.CancellationPending)
            {
                _worker.ReportProgress(0, image);
                //Thread.Sleep(interval);

                Thread.Sleep(10);
            }
        }
        private void workerProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            var image = e.UserState as Image;
            if (image == null) return;

            //Cv.Not(image, image);
            //_pictureBoxIpl1.RefreshIplImage(image);
            //_pictureBoxIpl1.Image=image;

            _pictureBoxIpl1.Invoke(new EventHandler(delegate
            {
                _pictureBoxIpl1.Image = image;
            }));

            
        }

        private void workerRunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            _worker.Dispose();
            _worker = null;
        }

 .MainTablePreferences(table =>
           {
               table.ColumnsWidthsType(TableColumnWidthType.Relative);
               table.GroupsPreferences(new GroupsPreferences
               {
                   GroupType = GroupType.HideGroupingColumns,
                   RepeatHeaderRowPerGroup = true,
                   ShowOneGroupPerPage = false,
                   SpacingBeforeAllGroupsSummary = 5f,
                   NewGroupAvailableSpacingThreshold = 170
               });
           })
           .MainTableDataSource(dataSource =>
                                    {
                                        var listOfRows = new ReceptionPatientBl(context).GetReceptionSummaryView(_rcpIds);
                                        var list = listOfRows.OrderBy(x => x.ReceptionPatientId).ToList();
                                        dataSource.StronglyTypedList(list);
                                    })
           .MainTableColumns(columns =>
           {
               columns.AddColumn(column =>
               {
                   column.PropertyName("rowNo");
                   column.IsRowNumber(true);
                   column.CellsHorizontalAlignment(HorizontalAlignment.Left);
                   column.IsVisible(true);
                   column.Order(0);
                   column.Width(1);
                   column.HeaderCell("#");
               });

               columns.AddColumn(column =>
               {
                   column.PropertyName("ReceptionPatientId");
                   column.IsRowNumber(false);
                   column.CellsHorizontalAlignment(HorizontalAlignment.Center);
                   column.Order(3);
                   column.Width(2);
                   column.HeaderCell("ReceptionPatientId");
                   column.Group(true,
                   (val1, val2) =>
                   {
                       return val1 == val2;
                   });
               });

               columns.AddColumn(column =>
               {
                   column.PropertyName("TestName");
                   column.CellsHorizontalAlignment(HorizontalAlignment.Center);
                   column.Order(4);
                   column.Width(2);
                   column.HeaderCell("نام تست");
                   column.IsVisible(true);
               });

               columns.AddColumn(column =>
               {
                   column.PropertyName("TestShortName");
                   column.CellsHorizontalAlignment(HorizontalAlignment.Center);
                   column.Order(5);
                   column.Width(2);
                   column.HeaderCell("نام اختصاری تست");
                   column.IsVisible(true);
               });

           })
           .MainTableEvents(events => events.DataSourceIsEmpty(message: "There is no data available to display."))
                //.Export(export =>
                //{
                //    export.ToExcel();
                //})
           .Generate(data =>
           {
               var fileName = "ExecutiveWorkListReport.pdf";
               fileName = HttpUtility.UrlEncode(fileName, Encoding.UTF8);
               data.FlushInBrowser(fileName);
           });