ASP.NET

"ConnectionStrings": {
    "AuthConnectionString": "Server=.;Database=AspNetAuth;Trusted_Connection=True"
  }

builder.Services.AddDbContext<AuthDbContex>(options => options.UseSqlServer(builder.Configuration.GetConnectionString("AuthConnectionString")));
builder.Services.AddIdentity<IdentityUser, IdentityRole>().AddEntityFrameworkStores<AuthDbContex>();

Quote:

A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)

<form action="doPowershell.asp" method="post">
    Network Username: <input type="textbox" name="userName"/>
    <input type="submit"/>
</form>

<%
Dim userName
userName = Request.Form("userName")
response.write(userName)

Server.Execute("activesync.ps1")
%>

(Get-CASMailbox -Identity <username>).ActiveSyncEnabled

<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.