dotnet core

Hi, Peter, i see this must need .net framwork 2,3or 4, but how it support for .net 5 on centos, when i using  InterSystems.Data.CacheClient.dll   and the write this code it makes error 

the code is here

public System.Data.DataSet exeSqlForDataSet(string QueryString)
        {

           string strConnection = "Server=" + "192.168.102.87" + ";Port=1972; Namespace=" + "IMEDPACS" + "; Password=" + "sys" + "; User ID = " + "_system" + ";Pooling=true;"; ;

           var conn = new CacheConnection(strConnection);
            try
            {
                if (conn.State != ConnectionState.Open)
                {
                    conn.Open();
                }
                CacheCommand cmd = new CacheCommand();
                cmd.Connection = this.conn;
                if (inTransaction)
                    cmd.Transaction = trans;
                DataSet ds = new DataSet();
                CacheDataAdapter ad = new CacheDataAdapter();
                cmd.CommandText = QueryString;
                //CLogger._log.Debug(QueryString);
                ad.SelectCommand = cmd;
                ad.Fill(ds);
                ad.Dispose();
                return ds;
            }
            catch (Exception e2)
            {
                throw e2;
            }
        }

this exception is here 

System.UnauthorizedAccessException: Access to the path '/root/0000/00/Debug/dbnet5.0' is denied.
---> System.IO.IOException: Permission denied
--- End of inner exception stack trace ---
at System.IO.Enumeration.FileSystemEnumerator1.CreateDirectoryHandle(String path, Boolean ignoreNotFound) at System.IO.Enumeration.FileSystemEnumerator1.Init()
at System.IO.Enumeration.FileSystemEnumerator1..ctor(String directory, Boolean isNormalized, EnumerationOptions options) at System.IO.Enumeration.FileSystemEnumerable1..ctor(String directory, FindTransform transform, EnumerationOptions options, Boolean isNormalized)
at System.IO.Enumeration.FileSystemEnumerableFactory.UserFiles(String directory, String expression, EnumerationOptions options)
at System.IO.Directory.InternalEnumeratePaths(String path, String searchPattern, SearchTarget searchTarget, EnumerationOptions options)
at System.IO.Directory.GetFiles(String path, String searchPattern)
at Microsoft.DotNet.CommandFactory.ProjectFactory.GetMSBuildProjPath(String projectDirectory)
at Microsoft.DotNet.CommandFactory.ProjectFactory.GetMSBuildProj(String projectDirectory, NuGetFramework framework, String configuration, String outputPath)
at Microsoft.DotNet.CommandFactory.ProjectToolsCommandResolver.ResolveFromProjectTools(CommandResolverArguments commandResolverArguments)
at Microsoft.DotNet.CommandFactory.ProjectToolsCommandResolver.Resolve(CommandResolverArguments commandResolverArguments)
at Microsoft.DotNet.CommandFactory.CompositeCommandResolver.Resolve(CommandResolverArguments commandResolverArguments)
at Microsoft.DotNet.CommandFactory.CommandResolver.TryResolveCommandSpec(ICommandResolverPolicy commandResolverPolicy, String commandName, IEnumerable1 args, NuGetFramework framework, String configuration, String outputPath, String applicationName) at Microsoft.DotNet.CommandFactory.CommandFactoryUsingResolver.Create(ICommandResolverPolicy commandResolverPolicy, String commandName, IEnumerable1 args, NuGetFramework framework, String configuration, String outputPath, String applicationName)
at Microsoft.DotNet.Cli.Program.ProcessArgs(String[] args, TimeSpan startupTime, ITelemetry telemetryClient)
at Microsoft.DotNet.Cli.Program.Main(String[] args)

what can I do for this?

We use Caché 2015 with the CacheProvider. 
We connect with a CacheConnection Object to the Database and use the Method GenSourceFile to generate C# Classes from the Caché Classes. We then compile this c# Code into a DLL and use it together with the InterSystems.Data.CacheClient.dll for working with the Caché Objects in C#. Eventhought the DLL is compiled with .net 4.5 it works great together with .net core 3.2 ASP.NET.  But we only use it on windows plattforms. So maybe not working on linux?!