ASP.NET

<asp:CommandField
          ShowEditButton="True" />

    <ItemTemplate>
        <asp:CheckBox ID="ckbIsCurrentAccount" runat="server" width="30px" checked='<%#Eval("IsCurrent").ToString()%>'/>
    </ItemTemplate>
    <EditItemTemplate>
        <asp:CheckBox ID="ckbIsCurrentAccountEdit" runat="server" width="30px" Checked='<%#DataBinder.Eval(Container.DataItem, "IsCurrent") %>'/>
    </EditItemTemplate>
    <FooterTemplate>
        <asp:CheckBox ID="ckbIsCurrentAccountFooter" runat="server" width="30px" checked="true"/>
    </FooterTemplate>
</asp:TemplateField>

Quote:

System.InvalidCastException
HResult=0x80004002
Message=Unable to cast COM object of type 'System.__ComObject' to interface type 'Shell32.Shell'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{286E6F1B-7113-4355-9562-96B7E9D64C54}' failed due to the following error: No such interface supported (0x80004002 (E_NOINTERFACE)).
Source=System.Private.CoreLib
StackTrace:
at System.Runtime.CompilerServices.CastHelpers.ChkCastAny(Void* toTypeHnd, Object obj)

We have a login
If you type the username and password and press submit, we called the login.cs
everything is validate and OK,
but we have a password recovery link, where you have to type the username in order
to send you the email, in both case we called the same page: login, but we a parameter: <a href="login?expire=1" class="btn btn-ic btn-link pkg-photo">Olvide mi clave</a>
this is the function called:
if (Get<bool>("expire"))
	{
   	   if (!Empty(Username))
	   {
		ExecuteRow("sp_sopv2_EnviarCorreoClave " + Username);
   	        SuccessMessage = "Se a enviado un correo a su cuenta de email que tiene registrado con nosotros favor verificar.Una vez acceda a su cuenta debe cambiar su clave por seguridad";
  	 }
	else{
		WarningMessage = "Favor de escribir el Usuario!";
	   }
}

the problem: the username field it passed with no value, only has value if you press submit

Here de login.cshtml:

 <div class="box box-primary login-box ewLoginBox">
    <div class="login-box-body">
	<p class="login-box-msg">@Html.Raw(Language.Phrase("Login"))</p>
	<div class="form-group">
	<div><input type="text" name="username" id="username" class="form-control ewControl" value="@_login.Username" placeholder="@Language.Phrase("Username")" autocomplete="username"></div>
    </div>
    <div class="form-group">
	<div><input type="password" name="password" id="password" class="form-control ewControl" placeholder="@Language.Phrase("Password")" autocomplete="current-password"></div>
    </div>
   <div class="checkbox">
	<label for="rememberme"><input type="checkbox" name="type" id="rememberme" value="a" @Html.Raw((_login.LoginType == "a") ? " checked" : "")>@Html.Raw(Language.Phrase("RememberMe"))</label>
   </div>
	<button class="btn btn-primary btn-block ewButton" name="btnsubmit" id="btnsubmit" type="submit">@Html.Raw(Language.Phrase("Login"))</button>
	@if (Config.Authentications.Count(kvp => kvp.Value.Enabled) > 0){
    	  <div class="social-auth-links text-center">
  	     <p>@Html.Raw(Language.Phrase("LoginOr"))</p>
	     @foreach (var kvp in Config.Authentications.Where(kvp => kvp.Value.Enabled)){
  	       <a href="ExternalLogin?provider=@kvp.Key" class="btn btn-block btn-social btn-flat btn-@kvp.Key.ToLower()">class="fa fa-@kvp.Key.ToLower()">@Html.Raw(Language.Phrase("Login" + kvp.Key))</a>
	     }
	  </div>
	}
<a href="login?expire=1" class="btn btn-ic btn-link pkg-photo">Olvide mi clave</a>


Here the login.cs 
Username = ""; // Initialize  
string password = "";
if (IsLoggingIn()) { // After changing password
   Username = Session.GetString(Config.SessionUserProfileUserName);
   password = Session.GetString(Config.SessionUserProfilePassword);
   LoginType = Session.GetString(Config.SessionUserProfileLoginType);
   validPassword = Security.ValidateUser(ref Username, ref password, false);
   if (validPassword) {
	Session[Config.SessionUserProfileUserName] = "";
	Session[Config.SessionUserProfilePassword] = "";
   }
   } else { // Normal login
	if (!Security.IsLoggedIn)
	Security.AutoLogin();
	Security.LoadUserLevel(); // Load user level
	bool encrypted = false;					
	if (!Empty(Post("username"))) {
  	// Login by form post
	Username = RemoveXss(Post("username"));
	password = RemoveXss(Post("password"));
	LoginType = RemoveXss(Post("type"));
        .
        .
	.
	
	if (Get<bool>("expire"))
	{
   	   if (!Empty(Username))
	   {
		ExecuteRow("sp_sopv2_EnviarCorreoClave " + Username);
   	        SuccessMessage = "Se a enviado un correo a su cuenta de email que tiene registrado con nosotros favor verificar.Una vez acceda a su cuenta debe cambiar su clave por seguridad";
  	 }
	else{
		WarningMessage = "Favor de escribir el Usuario!";
	   }
	}



Any help.

<form id="form1" runat="server">
        
<p>Click on this paragraph.</p>
        <div>
            	     <img id="imgMediabtn" src="media/login.gif" onmouseover="this.style.cursor = 'pointer';" />
                   <asp:Button ID="Button4" runat="server" Text="Button" OnClientClick="BindTreeview()"/>    
            <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
        </div>
    </form>

<script>
        $(document).ready(function () {
            $("p").click(function () {
                alert("The paragraph was clicked.");
            });

            $("#imgMediabtn").click(function () {
                alert("The image was clicked.");
                $.ajax({
                    type: "POST",
                    url: "MyWebService1.asmx/HelloWorld",
                    data: '{name: "' + $("#<%=TextBox1.ClientID%>")[0].value + '" }',
                     contentType: "application/json; charset=utf-8",
                      dataType: "json",
                    success:
                        function OnSuccess(response) {
                            alert("Hello");
                        },
                      failure: function (response) {
                          alert("Goodbye");
                    }
               
                  });
            });
        });

       
      
        function BindTreeview() {
            alert("The button was clicked.");
                   $.ajax({
                type: "POST",
                url: "TestWebService.aspx/GetCurrentTime",
                data: '{name: "' + $("#<%=TextBox1.ClientID%>")[0].value + '" }',
                contentType: "application/json; charset=utf-8",
                dataType: "json",
                success:
                    function OnSuccess(response) {
                        alert(response.d);
                    },
                failure: function (response) {
                    alert(response.d);
                }
            })
        }

          

        }

Imports System.Web.Services
Imports System.Web.Services.Protocols
Imports System.ComponentModel

' To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
' <System.Web.Script.Services.ScriptService()> _
<System.Web.Services.WebService(Namespace:="http://tempuri.org/")> _
<System.Web.Services.WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)> _
<ToolboxItem(False)> _
Public Class MyWebService1
    Inherits System.Web.Services.WebService

    <WebMethod()>
    Public Function HelloWorld(ByVal name As String) As String
        Return "Hello " & name & Environment.NewLine & "The Current Time is: " &
            DateTime.Now.ToString()
    End Function

End Class

using System;
using System.IO;
using System.Net;
using System.Net.Mail;
using System.Net.NetworkInformation;
using System.Text;
using System.Configuration;
using System.Collections.Generic;
using System.Threading.Tasks;
using System.Net.Http;
using System.Linq;

namespace showserverstatus
{
    class Program
    {
        static async Task<int> Main(string[] args)
        {
            System.Collections.Concurrent.ConcurrentDictionary<string, string> urlToStatus = new();

             IEnumerable < Task<bool> > tasks = args.Select(async url =>
            {
                bool result = await ServerStatusByAsync(url);
                return urlToStatus.TryAdd(url, result ? "WORKING" : "DOWN");
            });

            bool[] results = await Task.WhenAll(tasks);

            StringBuilder body = new("Please find the status of the DMZ servers below:");
            foreach (var kvp in urlToStatus)
            {
                body.AppendLine();
                body.AppendFormat("{0}: {1}", kvp.Key, kvp.Value);
            }

            await SendEmailAsync("DMZ Server Status", body.ToString());
            await Task.Delay(3000);

            // Return the number of servers which were down:
            return results.Count(result => !result);
        }
        static async Task<bool> ServerStatusByAsync(string url)
        {
            HttpClient http = new();
            using (HttpResponseMessage response = await http.GetAsync(url))
            {
                Console.WriteLine("GET {0}: {1}", url, response.StatusCode);

                if (response.IsSuccessStatusCode)
                {
                    await SendEmailAsync($"{url} WORKING", $"GET {url} returned {response.StatusCode}");
                    return true;
                }
                await SendEmailAsync($"{url} DOWN", $"GET {url} returned {response.StatusCode}");
                return false;
            }
        }

        static async Task SendEmailAsync(string subject, string body)
        {
            using MailMessage mm = new(ConfigurationManager.AppSettings["FromEmail"], "joeblow@gmail.com");
            mm.To.Add("janeblow@yahoo.com");
            mm.CC.Add("kevin.bruiner@hotmail.com");
            mm.Subject = subject;
            mm.Body = body;
            mm.IsBodyHtml = false;

            SmtpClient smtp = new()
            {
                Host = ConfigurationManager.AppSettings["Host"],
                Port = int.Parse(ConfigurationManager.AppSettings["Port"]),
                EnableSsl = true,
                UseDefaultCredentials = false,
                Credentials = new NetworkCredential(ConfigurationManager.AppSettings["Username"], ConfigurationManager.AppSettings["Password"]),
            };

            await smtp.SendMailAsync(mm);
        }
    }
}