Hi everyone,

First, some background: I'm maintaining a content filter that was built with C# / .NET 4.6.1 / .NET Standard

I'm currently running into an issue where .NET fails to open a secure channel to a particular website. The URL I'm trying to access with C# is https://portal.worldpay.us

Here's the error I'm getting:

Exception: System.AggregateException: One or more errors occurred. ---> System.Net.Http.HttpRequestException: An error occurred while sending the request. ---> System.Net.WebException: The request was aborted: Could not create SSL/TLS secure channel.
   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
   at System.Net.Http.HttpClientHandler.GetResponseCallback(IAsyncResult ar)
   --- End of inner exception stack trace ---
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
   at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
   at System.Threading.Tasks.Task`1.get_Result()
   at InternetTesting.Program.Main(String[] args) in c:\users\kent friesen\source\repos\InternetTesting\InternetTesting\Program.cs:line 22
---> (Inner Exception #0) System.Net.Http.HttpRequestException: An error occurred while sending the request. ---> System.Net.WebException: The request was aborted: Could not create SSL/TLS secure channel.
   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
   at System.Net.Http.HttpClientHandler.GetResponseCallback(IAsyncResult ar)
   --- End of inner exception stack trace ---<---

Code which replicates the problem:

class Program
{
    static void Main(string[] args)
    {
        HttpClient client = new HttpClient();
        HttpRequestMessage message = new HttpRequestMessage(HttpMethod.Get, "https://portal.worldpay.us");

        HttpResponseMessage response = null;

        try
        {
            response = client.SendAsync(message).Result;
        }
        catch(Exception ex)
        {
            Console.WriteLine("Exception: {0}", ex);
        }

        if (response != null)
        {
            Console.WriteLine("Response {0}", response.StatusCode);
        }

        Console.ReadKey();
    }
}

At first, I thought it was an Schannel problem, but now I'm not sure, because no Schannel error appears in event viewer, and I am able to access the site with IE11 and Edge just fine.

Does anyone have any ideas what the problem might be? I'd be inclined to say there's a bug somewhere in the .NET software stack, but I'd like to be proven wrong.

Thanks

This is something that I've never been able to resolve in any version of Visual Studio (Ultimate 2012 currently).  I'm using VB.NET but the Try ... Catch exception handling does NOT provide any information on exactly what line of code triggered the error when I'm in a debug session.  It'll tell me what the exception issue, but NOTHING about what line actually triggered the exception.

If I have several 100's of lines of code in a Try ... Catch, this becomes a huge issue ... in most cases I stop execution and but a break point at the first line of code in the Try ... Catch and re-run my debug session (definitely NOT efficient).  I have to look for hints based on inspecting all the variables/structures.  This is TIME consuming and not helping the speed of my development work.

Many years ago it was easy to get to the offending line of code ... before the invention of .NET and Try ... Catch, but now I seem to have lost that ability, such a basic and fundamental ability.  I've gone on for years just dealing with the lack of functionality in VS 2008+ series.  

I hoping I'm wrong and there is a way that I just never discovered all these years, if so, can someone please tell me how?

I've seen lots of silly suggestions such as put a Try ... catch on every line of code, but that's not productive.

So have I really lost a fundamental debugging feature?  If so, how is this progress?

Rob

I am trying to send an email using the Microsoft Graph API, and getting the following response:

StatusCode: 401, ReasonPhrase: 'Unauthorized'...

I'm trying to find out if there's something wrong with my code, or if the user account is lacking permissions.

Here is the code below:

string accessToken = GetADToken();
            string graphRequest = "https://graph.microsoft.com/v1.0/me/sendMail";

            HttpClient client = new HttpClient();
            client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", accessToken);
            client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
            // client.DefaultRequestHeaders.Add("ContentType", "application/json");

            var email = new
            {
                message = new
                {
                    subject = "test subject",
                    body = new
                    {
                        contentType = "Text",
                        content = "The cafeteria is open"
                    },
                    toRecepients = new List<object> { new {
                            emailAddress = new {
                                address = "test.user@emailprovider.com"
                            }
                        }
                    },
                    ccRecipients = new List<object> { new {
                            emailAddress = new {
                                address = "test.user@emailprovider.com"
                            }
                        }
                    }
                },
                saveToSentItems = false
            };

            // var requestContent = new StringContent(JsonConvert.SerializeObject(email), Encoding.UTF8, "application/json");

            string requestContent = JsonConvert.SerializeObject(email);
            var buffer = Encoding.UTF8.GetBytes(requestContent);
            var byteContent = new ByteArrayContent(buffer);
            byteContent.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/json");

            var response = client.PostAsync(graphRequest, byteContent).Result;

            return response;

Hi Team,

We have implemented SAML authentication and using .Net framework 4.6.2

CheckSignature is failing on some SAML responses, so far we have found one such case. CheckSignature passes for all other SAML responses.

1. SAML response is valid

2. Certificate is valid

3. SAML response text was not altered.

Found this article on the web --> https://github.com/dotnet/corefx/issues/19198

Here is the code which checks signature on SAML response.

 XmlNamespaceManager manager = new XmlNamespaceManager(xmlDoc.NameTable);
            manager.AddNamespace("ds", SignedXml.XmlDsigNamespaceUrl);
            manager.AddNamespace("saml", "urn:oasis:names:tc:SAML:2.0:assertion");
            manager.AddNamespace("samlp", "urn:oasis:names:tc:SAML:2.0:protocol");

            XmlNodeList nodeList = xmlDoc.SelectNodes("//ds:Signature", manager);

            SignedXml signedXml = new SignedXml(xmlDoc);

            if (nodeList?.Count != 1)
            {
                return false;
            }

            //Load signedXml from SAML Response 

            signedXml.LoadXml((XmlElement) nodeList[0]);

            // Load certificate from file store
            X509Certificate2 cert = (certificate from file store.)

            //Verifiy signature using the public key in the signature and key signing ceritificate.

            return (signedXml.CheckSignature() || signedXml.CheckSignature(cert, true));

Please let me know, if there I am missing anything here.

regards,

Prashant.

Starting to Porting our project from .Net 4.6 to .Net Core 2.1.  I got cookie Authentication working at some point. I've upgraded my libraries and changed some configuration and now only the users that have a cookie can login. No new users can login. Calling  HttpContext.SignInAsync doesn't set the identity. 

In my startup I have the following code to build the middle ware to support cookie authentication:

public void ConfigureServices(IServiceCollection services)
{


services.Configure<CookiePolicyOptions>(options =>
            {
                options.CheckConsentNeeded = context => true;
                options.MinimumSameSitePolicy = SameSiteMode.None;
            });
...


 services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1).AddSessionStateTempDataProvider();

            services.AddAuthentication(options =>
                {
                    options.DefaultScheme = CookieAuthenticationDefaults.AuthenticationScheme;
                    options.DefaultChallengeScheme = CookieAuthenticationDefaults.AuthenticationScheme;
                    options.DefaultScheme = CookieAuthenticationDefaults.AuthenticationScheme;
                })
                .AddCookie(CookieAuthenticationDefaults.AuthenticationScheme, options =>
                {                 
                    options.Cookie.Name = "researchCookie";
                    options.AccessDeniedPath = new PathString("/account/create");
                    options.LoginPath = new PathString("/account/create");
                    options.Cookie.HttpOnly = true;
                    options.ExpireTimeSpan = TimeSpan.FromDays(365);
                    options.ReturnUrlParameter = CookieAuthenticationDefaults.ReturnUrlParameter;
                    options.SlidingExpiration = true;
                });

}





public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{


...

 app.UseAuthentication();

...

 app.UseCookiePolicy(new CookiePolicyOptions
            {
                HttpOnly = HttpOnlyPolicy.Always,
                MinimumSameSitePolicy = SameSiteMode.Lax,
                Secure = CookieSecurePolicy.Always,
});

...

  app.UseMvc(routes =>
            {
                routes.MapRoute(
                    name: "home",
                    template: "                   {controller=default}/{action=Index}");
            });

}

When I authenticate this is the code I have:

 List<Claim> claims = new List<Claim>
                {
                    new Claim(ClaimTypes.Name, loginResult.AccessData.FirstName + " " + loginResult.AccessData.LastName),
                    new Claim(ClaimTypes.Email, loginResult.AccessData.Email),
                    new Claim(ClaimTypes.GivenName, loginResult.AccessData.FirstName),
                    new Claim(ClaimTypes.Surname, loginResult.AccessData.LastName),
                    new Claim(ClaimTypes.NameIdentifier, loginResult.AccessData.AccessID.ToString())
                };
                ClaimsIdentity identity = new ClaimsIdentity(claims, CookieAuthenticationDefaults.AuthenticationScheme);

                var authProperties = new AuthenticationProperties
                {
                    AllowRefresh = true,
                    // Refreshing the authentication session should be allowed.

                    ExpiresUtc = DateTimeOffset.UtcNow.AddYears(2),
                    // The time at which the authentication ticket expires. A 
                    // value set here overrides the ExpireTimeSpan option of 
                    // CookieAuthenticationOptions set with AddCookie.

                    IsPersistent = true,
                    // Whether the authentication session is persisted across 
                    // multiple requests. Required when setting the 
                    // ExpireTimeSpan option of CookieAuthenticationOptions 
                    // set with AddCookie. Also required when setting 
                    // ExpiresUtc.

                    IssuedUtc = DateTime.Now.ToUniversalTime(),
                    // The time at which the authentication ticket was issued.

                    //RedirectUri = <string>
                    // The full path or absolute URI to be used as an http 
                    // redirect response value.
                };


                await HttpContext.SignInAsync(CookieAuthenticationDefaults.AuthenticationScheme, new ClaimsPrincipal(identity), authProperties);

I must be doing something wrong or something in the library updates has broken this. But Like I said only people who previously logged in can login. If you delete the cookies then the identity never gets set. 

Any suggestions would be greatly appreciated. 

With processmonitor we traced a winforms application using comctl32.dll. Under Win7 with Framework 4.x the application starts fast an there is a normal using of comctl32.dll. Unter win10 with framework 4.x the same applikation start two oder three times slower. Reason is the excessive use comctl32.dll, which we see with the processmonitor.

Problem seems the function in Framework 4.x with win10 GetModuleHandle("comctl32.dll")

Details:
https://stackoverflow.com/questions/39673069/windows-10-exessive-use-of-comctl32-dll-in-net-4-0-and-up

Hello,

I am looking for the multipoint mouse SDK for download or something similar if it no longer exists (I tried various search engines and the search result directly associated with msdn - but no luck).

Similarly, I need something for the keyboard as well.

I am working with macros - however, I am facing the problem that my mouse and keyboard cannot be left alone inorder for me to work on my other screens.

I am fine to have the application be placed within a container (such as a windows form's panel) - where it will have its own mouse and keyboard (or something similar to it) - which will perform actions such as mouse click, enter text etc.

Thanks!

FileStream stream = new FileStream("xhtml1-transitional.xsd", FileMode.Open, FileAccess.ReadWrite);
XmlSchema schema = XmlSchema.Read(stream, new ValidationEventHandler(OnValidation));
XmlReaderSettings settings = new XmlReaderSettings();
settings.ValidationType = ValidationType.Schema;
settings.Schemas.Add(schema);
string html = "<html xmlns=\"http://www.w3.org/1999/xhtml\"><head><title></title></head><body><p>hello</p></body></html>";
XmlReader reader = XmlReader.Create(new StringReader(html), settings);

XmlDocument xmlDocument = new XmlDocument();
xmlDocument.Load(reader);
reader.Close();

Hi,

i have .vbs file and i am converting it into .exe file(using 3rd party tool).

the question is: once exe file generated, do i need admin rights to run exe file or not?

i need to run exe file on windows: xp,win7 and 10

Regards,

Yogesh

yogi

Hi all;

I have the following call:

var coll =(NameValueCollection)ConfigurationManager.GetSection("WindwardReports");

When I look at coll in the debugger, it lists 3 keys. Two of those keys do not exist anywhere on my computer. I didn't just look in the config files (machine as well as app.config),I did a grep of every file on my computer and those text strings don't exist.

How can I determine where .NET is pulling those from? One note, this is a Word AddIn (and yes I looked at winword.exe.config too).

thanks - dave

What we did for the last 6 months - Made the world's coolest reporting & docgen system even more amazing

HI All

I run software that is dependent on .Net 4.0 and every so often the application which is web based fails to connect to the SQL DB on the server and throws a COM exception with the following message: This is taken from Event viewer:

the c++ module failed to load during appdomain initialization

I see on the forums i need to add a line into a config file however i dont know which config file to edit.

Can someone please let me know how to get this warning message to go away and to prevent this from happening

Hi all,

I'm seeing strange behavior in an application with a certain filesystem.  If across multiple threads (generally 5 or more) in the app, I try to create an identical directory structure between all of them.  Some of the threads are throwing an IOException with a messaging that one of the intermediate directories already exists.  This seems to only happen if the file system is a network server and if I do NOT have ProcMon tracing running on the Client (App) side, but I can get it to happen if I have ProcMon tracing on the Server side.

The app is using .NET 4.5.2, but I've been able to reproduce it using the latest .NET as well.

E.g. I try call Directory.CreateDirectory with the following path across 5 threads: Y:\asdf\006\0\0\0\0

A typical error I will get is the following: Cannot create "Y:\asdf\006\0" because a file or directory with the same name already exists.    at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)

   at System.IO.Directory.InternalCreateDirectory(String fullPath, String path, Object dirSecurityObj, Boolean checkHost)
   at System.IO.Directory.InternalCreateDirectoryHelper(String path, Boolean checkHost)
   at System.IO.Directory.CreateDirectory(String path)

I've read the source code for Directory.CreateDirectory and the key point seems to be the creation of the stackDir for the intermediate directories: https://referencesource.microsoft.com/#mscorlib/system/io/directory.cs,e3885fef9f6af9de

What I don't get is, reading that code, it looks to me like the ONLY time this function would throw this exception would be if that error code was encountered AND the library looks up the already created directory to see if a.) its a file or b.) it got access denied trying to querying it.  Is anyone else available to confirm my analysis of that code?

What's frustrating is that the Directory.CreateDirectory says it won't throw that exception if the directory already exists and I can see that the directory already exists. I can also see, when the filesystem is returning NAME COLLISION, that from the server side, I DO NOT see the app requerying the entry to see if its a directory. That also speaks to potential metadata caching on the client side, but I don't see why that would ever return that its not a directory.

Adam

trying to build a project application in vs 2017 community version. the application worked fine with vs 2012 pro

System.IO.Compression.ZipFile.CreateFromDirectory(dbFolder, defltBkpTarget,
				System.IO.Compression.CompressionMode.Compress, zipIncludeBaseDir);

// where vs2007 red underline the code: System.IO.Compression.ZipFile.CreateFromDirectory
// where System.IO.Compression.CompressionMode.Compress is not underlined

Hi,

We have a web application developed in .NET Framework 2.0 which fetches details of AD objects from the DC using the secure32.dll. However, when the web application is deployed on a member server, the below error is thrown while fetching the details of the administrator:

Inner Exception: GetUserNameEx 1317
System.Exception: GetUserNameEx 1317

When the web application is installed on the DC, the fetching operation is successful. Please suggest, as this is blocking us. Let me know if further information is required.

Please note that we have two DCs with 2008R2 and 2012R2 OS and a member server with 2012R2 OS.

For educational purposes I want to enumerate all instances of the WPF Binding class.

This might be a WPF question but instead of moving this to the WPF forum, if someone can confirm that I am using reflection properly then that would be better.

I have tried the following (in my MainWindow class).

MemberInfo[] members = GetType().GetMember("Binding");

That gets nothing. So yes, each instance will be a member of some other object. Is there a way, using code, to get all instances (of the assembly) regardless of where they are? Something else that could help is a relevant tool.

WPF binding is confusing and I think that studying actual instances is one way to learn how it works. I am asking how to use reflection to list them.

And again, I will create a separate question for the parts specific to WPF.

Sam Hobbs
SimpleSamples.Info

I have a ToolStripTextBox, using it for a filter for a SQL Query.

If I have the list:

Apple, Orange, Pineapple

The suggest and append features will pick out "Apple" when I filter for "App".

I want to alter the Suggest part to include "Pineapple" also (match on string.Contains, not just string.Startswith)

Is there a way to intercept something like OnSuggestFiltering(), or whatever routine handles the filter?

I'd rather live with false hope than with false despair.