.NET (Core and Framework)

private IList<MockData<OnlineRegistration, OnlineRegistration, OnlineRegistration>> _registerMocks;

var obj1 = new OnlineRegistration {Id=1, Name="xyz"}
var obj2 = new OnlineRegistration {Id=2, Name="abc"}
var obj3 = new OnlineRegistration {Id=2, Name=".Net Fun"}

app.use(async (context, next) =>
            {
// When the user is already authenticated, check if the session is still alive, if not, log him out.
//do something
await context.Authentication.SignOutAsync(CookieAuthenticationDefaults.AuthenticationScheme);
                    await context.Authentication.ChallengeAsync(CookieAuthenticationDefaults.AuthenticationScheme);
//OR 
 await next.Invoke();
}

var projectId = context?.Session?.GetInt("Project_Id");

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;  
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace staff_scheduling_tool.views
{
  /// <summary>
  /// Interaction logic for employees_new_employee.xaml
  /// </summary>
  public partial class employees_new_employee : UserControl
{

assignment_typeDataContext dc = new assignment_typeDataContext(Properties.Settings.Default.db_employee_scheduling_applicationConnectionString);

  public employees_new_employee()
{
InitializeComponent();

  if (dc.DatabaseExists()) datagrid_search_results.ItemsSource = dc.companyemployees;

}
  private void Save_changes_Click(object sender, RoutedEventArgs e)
{
dc.SubmitChanges();
}
}
}

<DataGrid Name="datagrid_search_results" Margin="10,25" Width="1400" Height="350" AlternatingRowBackground="LightGreen" GridLinesVisibility="None" SelectionUnit="Cell" BorderBrush="Transparent" BorderThickness="0" Background="Transparent" AutoGenerateColumns="False">
      <DataGrid.Columns>
      <DataGridTextColumn Binding="{Binding employee_id}" Width="Auto" Header=" Employee ID" />
      <DataGridTextColumn Binding="{Binding last_name}" Width="Auto" Header=" Last Name" SortDirection="Ascending" />
      <DataGridTextColumn Binding="{Binding first_name}" Width="Auto" Header=" First Name"/>
      <DataGridTextColumn Binding="{Binding middle_name}" Width="Auto" Header=" Middle Name"/>
      <DataGridTextColumn Binding="{Binding company_email}" Width="Auto" Header=" Company Email"/>
      <DataGridComboBoxColumn Width="Auto" Header="Assignment Category" />
      <DataGridTextColumn Binding="{Binding department_assignment_begin_date, StringFormat=d}" Width="Auto" Header=" Begin Date"/>
      <DataGridTextColumn Binding="{Binding department_assignment_end_date, StringFormat=d}" Width="Auto" Header=" End Date"/>
      </DataGrid.Columns>
      </DataGrid>
      <Grid>
      <Grid.RowDefinitions>
      <RowDefinition Height="45"/>
      </Grid.RowDefinitions>
      <Button Name="save_changes" Content="Save Updates" Click="Save_changes_Click" Grid.Row="0" HorizontalContentAlignment="Center" VerticalContentAlignment="Center" Width="250" FontFamily="Sitka Banner" FontSize="24" FontStyle="Italic" FontWeight="ExtraBold"/>

      </Grid>

LogErrorAsync("api/Quotation", "SendMail", ex.Message.ToString(), ex.StackTrace.ToString());

protected void LogErrorAsync(string controller, string action, string message, string stacktrace, string user = "")
     {
         QuotationDBFactory mFactory = new QuotationDBFactory();
         mFactory.InsertErrorLog(
             user,
             controller,
             action,
             message,
             stacktrace
          );
         SendEmailAysnc(stacktrace, message).ConfigureAwait(false);
     }
     internal async Task<bool> SendEmailAysnc(string st, string ex)
     {
         try
         {
             var Content = string.Empty;
             if (this.ActionContext.Request.Method.ToString() == "POST")
             {
                 var d = new StreamReader(await Task.Run(() => this.ActionContext.Request.Content.ReadAsStreamAsync().Result).ConfigureAwait(true));
                 d.BaseStream.Seek(0, SeekOrigin.Begin);
                 Content = d.ReadToEnd();
             }
             var hostdata = ((System.Web.HttpRequestWrapper)this.RequestContext.GetType().Assembly.GetType("System.Web.Http.WebHost.WebHostHttpRequestContext").GetProperty("WebRequest").GetMethod.Invoke(this.RequestContext, null));
             var exdata = new ExceptionEmailDto()
             {
                 ActionMethod = this.ActionContext.Request.Method.ToString(),
                 AppUrl = System.Configuration.ConfigurationManager.AppSettings["APPURL"],
                 Error = ex,
                 Headers = this.ActionContext.Request.Headers.ToString(),
                 ServerName = System.Configuration.ConfigurationManager.AppSettings["ServerName"],
                 StackTrace = st,
                 Url = this.ActionContext.Request.RequestUri.ToString(),
                 UserAgent = hostdata.UserAgent == null ? string.Empty : hostdata.UserAgent.ToString(),
                 UserHostAddress = hostdata.UserHostAddress == null ? string.Empty : hostdata.UserHostAddress.ToString(),
                 UserHostName = hostdata.UserHostName == null ? string.Empty : hostdata.UserHostName.ToString(),
                 UTC = DateTime.UtcNow.ToString(),
                 Content = Content,
                 ServerVariables = hostdata.ServerVariables == null ? "undefined" : hostdata.ServerVariables.ToString()
             };
             FOCiS.SSP.Web.UI.Controllers.APIDynamicClass.SendExceptionEmailV2(
                 exdata
             );
         }
         catch (Exception exc)
         {
             FOCiS.SSP.Web.UI.Controllers.APIDynamicClass.SendExceptionEmail(this.ActionContext.Request.Method.ToString(),
                 exc.Message.ToString(), exc.StackTrace.ToString()
             );
             return false;
         }

         return true;
     }

var d = new StreamReader(await Task.Run(() => this.ActionContext.Request.Content.ReadAsStreamAsync().Result).ConfigureAwait(true));

Cannot access a disposed object.
Object name: 'System.Web.Http.WebHost.HttpControllerHandler+LazyStreamContent'.

Option Explicit On
Dim BUFFERSS
Private Declare Sub Sleep Lib "kernel132" (ByVal dwMilliseconds As Long)
Dim message As Integer<small><big><pre>

msending = 0
absent1 = 0
absent2 = 0
absent3 = 0

absentflag = 0

flag1 = 0
flag2 = 0
flag3 = 0

PerformanceCounter = 0
'MSComm1.Settings = "9600,n,8,1" 'Change this with the Baud rate of your modem (The one that you use with the Hyper terminal)
'MSComm1.CommPort = 10
'MSComm1.PortOpen = True

With MSComm1
    .CommPort = 3
    .Settings = "9600,N,8,1"
    .Handshaking = comRTS
    .RTSEnable = True
    .DTREnable = True
    .Rthreshold = 1
    .Sthreshold = 1
    .InputMode = comInputModeText
    .InputLen = 0
    .PortOpen = True    'Must be the last
End With

txtrec.Text = MSComm1.Input
SearchDirectionHint = txtrec.Text
If (InStr(search, "teacher") And (teacherflag = 0)) Then  ' when the teacher will swipe the RFID card word teacher will be 
    Check3.Value = 1
    Timer3.Enabled = True   'timer3 is used for timing mins and secs
    teacherflag = 1
    Timer4.Enabled = True
End If

If (InStr(search, "stu1") And (sflag1 = 0) And mins < 6) Then   'then the student 1 will be marked present
    Check4.Value = 1
    sflag1 = 1
End If

If (InStr(search, "stu2") And (sflag1 = 0) And mins < 6) Then   'then the student 2 will be marked present
    Check5.Value = 1
    sflag2 = 1
End If

If (InStr(search, "stu3") And (sflag1 = 0) And mins < 6) Then   'then the student 3 will be marked present
    Check6.Value = 1
    sflag3 = 1
End If

If secs > 59 Then
    secs = 0
    mins = mins + 1
    Label3.Caption = mins
End If

If ((teacherflag = 1) And ((PerformanceCounter > 30) And (PerformanceCounter < 40)) And (Check9.Value = 0)) Then
    Check9.Value = 1
End If

If ((teacherflag = 1) And ((PerformanceCounter > 50) And (PerformanceCounter < 60)) And (Check10.Value = 0)) Then
    Check10.Value = 1
End If

If ((teacherflag = 1) And ((PerformanceCounter > 90) And (PerformanceCounter < 120)) And (Check12.Value = 0)) Then  'this when checked means all message sent
    Check12.Value = 1
End If

'check box for parents messages

If ((Check12.Value = 1) And ((PerformanceCounter > 300) And (PerformanceCounter < 320) And (check4.Value = 0))) Then    'This when checked means all message
    Check13.Value = 1
End If

If ((Check12.Value = 1) And ((PerformanceCounter > 330) And (PerformanceCounter < 350) And (check5.Value = 0))) Then    'This when checked means all message
    Check14.Value = 1
End If

If ((Check12.Value = 1) And ((PerformanceCounter > 370) And (PerformanceCounter < 380) And (check6.Value = 0))) Then    'This when checked means all message
    Check15.Value = 1
End If