I have configured my selenium tests in C# to report logs using Extent Reports and wanted to try the ExtentX version using MongoDB. I have set up ExtentX and MongoDB and they are running but the test fails with the following error...
"ArgumentNullException was unhandled by user code, value cannot be null" at the following line in the teardown...
extent.EndTest(test);
I am specifying the mongo connection string via...
extent = new ExtentReports(reportPath, true); // create instance
extent.X("mongodb://localhost:27017");
The test runs fine when not specifying the mongo connection. Any help is much appreciated.
Figured it out. I needed to add AssignProject("") to the extent. Now it works and the ExtentX reports are populated. There is missing data but that's another issue.
Related
I just started to use MongoDB(4.4) and its C# driver. I set up my MongoDB with the default option, localhost:27017. Then I turned on the authorization, created a superuser with root permission, like this:
db.createUser(
{
user: "superuser",
pwd: "123",
roles: [ "root" ]
}
)
I tested it on both Mongo shell and Compass, it all worked as expected, connected with correct password, and denied with the wrong one.
Then I created a C# windows form app, use NuGet to install all required packages such as MongoDB.Driver for C#(v2.11.0) and its related packages such as MongoDB.Bson, etc
After that, I used the following code to create a MongoClient:
MongoClient client = new MongoClient( "mongodb://superuser:12#localhost:27017" );
So I expected it should throw an exception because I used the wrong password, "12" in this case. But it didn't. Then I tried to list database names with:
client.ListDatabaseNames();
It threw a timeout exception: "A timeout occured after 30000ms selecting a server using CompositeServerSelector"
Even I used the correct password or turned off the authorization, and just go with "mongodb://localhost:27017" or ""mongodb://127.0.0.1:27017", it still threw the same timeout exception.
It feels like something wrong with that client it created which caused the timeout issue later on. But I couldn't figure out what I am missing.
Thank you for your help!
Edit:
The same code works perfectly in a console app, just not a windows form app, which really confuses me.
After trial and error for 2 days, I finally found a work around for this issue, still don't know why this works though.
So basically I have to split the MongoClient creation and its following function calls separately. I can't do anything related to the MongoClient right after its creation. For example, the following throws the time out exception:
MongoClient client = new MongoClient( "mongodb://localhost:27017" ); //I turned off authorization
client.ListDatabaseNames(); //Throw time out exception here!!!
I have to split them separately in 2 functions call, like one in a "Connect" button event, another one in a "ListDatabaseNames" button event.
Once I did that, everything works fine.
mongodb://superuser:12#localhost:27017?authMechanism=SCRAM-SHA-1
because dotNet not support SCRAM-SHA-256 yet
Creating a client does not perform any network operations like connecting to your MongoDB deployment - that is done in background. Hence incorrect credentials won't make client creation fail.
mongo shell works differently and compass probably performs some queries that would fail if credentials aren't correct.
Why you are getting a timeout error - my guess is it's an ipv4/ipv6 difference. Try 127.0.0.1 instead of localhost. If this doesn't help enable debug information in your driver.
I'm writing a WPF application.
Trying to use the normal method of getting a connection returns an error similar to: "The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine."
ACE.OLEDB has never been installed on this machine so this error makes sense.
I'm trying to create this application in a way so that our users won't need to contact IT to have the application installed. Getting IT involved is a no go situation and the project will be abandoned.
Another team has an Access database (accdb) that I want my application to extract information (only read, no insert or update). I talked to the team and they won't convert this database back to an earlier version (mdb).
After my research I assume that installing ACE.OLEDB without using Admin privileges is impossible. Because of this and my application requirement of not requiring admin privileges I need to start looking for "Mutant"/Dirty solutions that don't involve ACE.OLEDB.
I tried using power-shell but I'm getting the same problems as I had with C# (requires IT to install ACE.OLEDB).
I have two potential solutions. One write a VBA script that opens up the database and dumps a query result into a file. My C# application would call this VB script and then parse the created file.
The second option is to create a new Access process using Process.Start(fullFilePath) and somehow pass the command to execute a query and somehow pass the results back to the executing application (either via a method return or first to a file).
How would you get the data out?
Is there a way for C# to duplicate the DB file and convert it from (accdb -> mdb)?
This is the second question I ask that is very similar.
C# Connecting to Access DB with no install
The difference between the two (to prevent this is a duplicate question) is that in the previous question I was looking for ways to install ACE.OLEDB without admin privileges while here I'm just looking for any other work around.
Found a workaround. It uses Microsoft.Office.Interop.Access found in NuGet.
var accApp = new Microsoft.Office.Interop.Access.Application();
accApp.OpenCurrentDatabase(#tests.DatabasePath);
Microsoft.Office.Interop.Access.Dao.Database cdb = accApp.CurrentDb();
Microsoft.Office.Interop.Access.Dao.Recordset rst =
cdb.OpenRecordset(
"SELECT * FROM Users",
Microsoft.Office.Interop.Access.Dao.RecordsetTypeEnum.dbOpenSnapshot);
while (!rst.EOF)
{
Console.WriteLine(rst.Fields["username"].Value);
rst.MoveNext();
}
rst.Close();
accApp.CloseCurrentDatabase();
accApp.Quit();
I have a stored proc which just updates a table and I am executing it through C# code as well as through SSMS. Whenever i execute it, I get the following error:
Login failed for user domain\username
I have given full permissions to the SP and have also recreated the SP, but still I get the error. Strange thing is, all other procedures are working fine from both C# code and SSMS. I have also provided sysadmin access to my ID - still no luck.
While executing from VS (C# code), the connection opens but getting the same exception (SQLException).
Can anyone please tell me how to resolve this error?
Thanks Gregg for your suggestion. I have fixed this error. The problem was with the underlying tables the procedure was using and I have dropped and created those tables. Bingo.- it worked.
Looks strange but this is how I fixed.
I am trying to use the linq2db library (thanks by the way!) to retrieve records from an Informix database. I followed the steps from the documentation and was able to successfully get records from an ASP.NET console applicaiton using the Visual Studio debugger. However, I then tried to follow the same with a fresh and standalone ASP.NET MVC5 application and I am getting the error "The type initializer for 'IBM.Data.Informix.IfxDecimal' threw an exception." also running using Visual Studio debugger. I did some digging by downloading the source code and adding some break points and found that Line 125 and line 133 of the file LinqToDB.DataProvider.Informix.InformixDataProvider file are involved in causing the error. But that is as far as I got. So running in the context of a web application throws an error, but running in a console application is fine.
below is line 125 of LinqToDB.DataProvider.Informix.InformixDataProvider
MappingSchema.AddScalarType(_ifxDecimal, GetNullValue(_ifxDecimal), true, DataType.Decimal);
below is the GetNullValue method in that class (lines 130 to 134 of same file), error gets thrown on return getValue.Compile()()
static object GetNullValue(Type type)
{
var getValue = Expression.Lambda<Func<object>>(Expression.Convert(Expression.Field(null, type, "Null"), typeof(object)));
return getValue.Compile()();
}
Additional Info..
In the documentation titled Informix Client Software Development Kit (Version 4.10) in Table 2-1. Best-fit types for retrieving Informix data types it shows that there are three DECIMAL Informix types, each map to three different suggested .NET types
I am afraid you can't use Informix in partial trust environment. When I try to create IfxConnection in partial trust, I get SecurityException - 'That assembly does not allow partially trusted callers.'
Too old to comment, but, I had this error too. Solved it placing getValue.Compile() in place of getValue.Compile()();.
Works fine now.
I am using the Mathematica .Net/Link platform to create a web service to format and calculate math problems. However I am unable to get it working.
I create it using this code:
_Log.IpDebug("Starting the Kernel Link");
if (string.IsNullOrEmpty(_MathLinkArguments))
_InternelKernel = MathLinkFactory.CreateKernelLink();
else
_InternelKernel = MathLinkFactory.CreateKernelLink(_MathLinkArguments);
_Log.IpDebug("Kernel Link Started");
_InternelKernel.WaitAndDiscardAnswer();
The value of _MathLinkArguments is -linkmode launch -linkname \"C:\\Program Files\\Wolfram Research\\Mathematica\\7.0\\Math.exe\".
This piece of code is called from the Application_Start method of the global.asax.cs file.
When it gets to the WaitAndDiscardAnswer() call it gives the server error:
Error code: 11. Connected MathLink program has closed the link, but there might still be data underway.
Note: The SampleCode given with the .NET/Link package (both a console app and a WinForms app) works.
Edit:
I copied the console app sample code given with Mathematica into an asp.net page and it gave me the same error the first load and then on subsequent loads it gave me:
Error code: 1. MathLink connection was lost.
Edit2:
I forgot to mention that when I have procmon and task manager open while running my app, I can tell that Math.exe starts but it immediately exits, which makes those error code make complete sense...but doesn't explain why that happened.
To allow the .Net/Link to work in Asp.net (at least in IIS 7.5) you need to enable the property loadUserProfile on the app pool for the web site.
I am not entirely sure why this is the case, but from what I found while trying to debug this, there are some things that are gotten from the user's profile. I know for a fact that the default location of the kernel is, which explains why I couldn't use it with no arguments, and so I can only assume that other things are needed as well and without the profile it couldn't determine that.
But whatever the reason is this is required, it is, or at least it is a fix if you are getting similar problems like this in your own application.
I got the same error in a .Net WinForm application.
mathKernel = new MathKernel();
mathKernel.Compute("<< XYZ`XYZGraphs`");
The error occurred on loading the package straight after instantiating the MathKernel.
To resolve it you can wait a couple of seconds and then instantiating the MathKernel works fine. During this state where there might still be data underway the following conditions are both false:
if (!MathKernel.IsConnected)
{
MathKernel.Connect();
}
if (MathKernel.IsComputing)
{
MathKernel.Abort();
}
Edit:
I've recieved the error again and this time was able to determine the problem.
Using a command line open the MathKernel.exe and view the error message: