Solved Solutions to computer programming Errors

System.ObjectDisposedException: Cannot access a di

System.ObjectDisposedException: Cannot access a disposed context instance. A common cause of this error is disposing a context instance that was resolved from dependecy injection and then later trying to use the same context instance elsewhere in your application.

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ObjectDisposedException: Cannot access a disposed

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ObjectDisposedException: Cannot access a disposed context instance. A common cause of this error is disposing a context instance that was resolved from dependency injection and then later trying to use the same context instance elsewhere in your application

.NET 7
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Asp.Net Core 3.1 Entity Framwork Database Context

.NET 7
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Asp.Net Core 3.1 Entity Framwork Database Context Error: System.ObjectDisposedException: 'Cannot access a disposed object

.NET 7
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Asp.Net Core EF Core Error: Cannot access a dispos

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Asp.Net Core EF Core Error: Cannot access a disposed object. A common cause of this error is disposing a context that was resolved from dependency injection and then later trying to use the same context instance elsewhere in your application. This may occur if you are calling Dispose() on the context, or wrapping the context in a using statement. If you are using dependency injection, you should let the dependency injection container take care of disposing context instances.

ENTITY FRAMEWORK
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InvalidOperationException, A second operation started on this context before a previous operation completed.

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Microsoft Data SqlClient SqlException (0x80131904)

ENTITY FRAMEWORK
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Microsoft Data SqlClient SqlException (0x80131904) New transaction is not allowed because there are other threads running in the session

ENTITY FRAMEWORK
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Can not connect to SQL server in docker container

DOCKER
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Can not connect to SQL server in docker container from another docker container hosting asp.net core 3.0 application

DOCKER
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XmlException: The ':' character, hexadecimal value

XML
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XmlException: The ':' character, hexadecimal value 0x3A, cannot be included in a name

XML
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[AspNet 5 Entity Framework 6 Error] InvalidOperati

.NET 7
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[AspNet 5 Entity Framework 6 Error] InvalidOperationException: The property "ModelName.Id" has a temporary value while attempting to change the entity's state to "Modified". Either set a permanent value explicitly, or ensure that the database is configured to generate values for this property.

.NET 7
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setInterval in JavaScript not working

JAVASCRIPT
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setInterval in JavaScript not working

JAVASCRIPT
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Asp.Net Core 3.1 Error The 'inject' directive exp

.NET 7
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Asp.Net Core 3.1 Error The 'inject' directive expects an identifier

.NET 7
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[91 Error Access] Solve 91 Error problem when usin

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[91 Error Access] Solve 91 Error problem when using Access DB

DATABASES
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Login failed for user . (Microsoft SQL, Error: 184

SQL
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Login failed for user . (Microsoft SQL, Error: 18456)

SQL
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System.InvalidOperationException: Error while vali

.NET 7
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System.InvalidOperationException: Error while validating the service descriptor 'ServiceType: YOURSERVICE: Singleton ImplementationType: TheRepositoryConsumingTheInterface : Cannot consume scoped service 'DBContext' from singleton 'YourInterface'

.NET 7
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Error The instance of entity type ModalType cannot

.NET 7
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Error The instance of entity type ModalType cannot be tracked because another instance with the key value {id: 7656544} is already being tracked.

.NET 7
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Asp.Net MVC Development Notes

.NET 7
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Asp.Net MVC Development Notes

.NET 7
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Microsoft SQL Server, Error: 258

SQL
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Microsoft SQL Server, Error: 258

SQL
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The instance of entity type 'IdentityUserLogin<str

.NET 7
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The instance of entity type 'IdentityUserLogin<string>' cannot be tracked because another instance with the same key value for {'LoginProvider', 'ProviderKey'} is already being tracked

.NET 7
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[Access,Excel Linked Table Problem] Solved!!

TECHNOLOGY
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[Access,Excel Linked Table Problem] Solved!!

TECHNOLOGY
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Docker Container Micro-Service Error: Can not Conn

DOCKER
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Docker Container Micro-Service Error: Can not Connect to SQL Server in Docker Container from Microsoft Sql Server Management

DOCKER
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[Solved] Asp.Net Core C-Sharp Error: IOException:

.NET 7
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[Solved] Asp.Net Core C-Sharp Error: IOException: The process cannot access file because it is being used by another process

.NET 7
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Solved!! Dot Net Core 3.1 Error: Inspecting the st

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Solved!! Dot Net Core 3.1 Error: Inspecting the state of an object in the debuggee of type System.Reflection.MethodBase is not supported in this context

DATABASES
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C-Sharp 11 Tips and Tricks

RESEARCH
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C-Sharp 11 Tips and Tricks

RESEARCH
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Connect to Database Using CMD

DATABASES
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Connect to Database Using CMD

DATABASES
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System.Net.Sockets.SocketException (10013): An att

.NET 7
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System.Net.Sockets.SocketException (10013): An attempt was made to access a socket in a way forbidden by its access permissions

.NET 7
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The name 'Category' does not exist in the current

.NET 5
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The name 'Category' does not exist in the current context

.NET 5
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[Solved]: Invalid version: 16. (Microsoft.SqlServe

[Solved]: Invalid version: 16. (Microsoft.SqlServer.Smo)

OTHER
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[EF Core] How to Enable Sensitive Data Logging and

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[EF Core] How to Enable Sensitive Data Logging and Detailed Errors

ENTITY FRAMEWORK
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Be Aware of Memory Leak in Software Application

TECHNOLOGY
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Be Aware of Memory Leak in Software Application

TECHNOLOGY
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Connection error 401: permission denied - invalid

SERVERS
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Connection error 401: permission denied - invalid PVE ticket

SERVERS
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Entity Framework Core 6 and 7 Tips and Tricks

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Entity Framework Core 6 and 7 Tips and Tricks

ENTITY FRAMEWORK
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Unable to bind to localhost on the IPv4 loopback i

.NET 7
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Unable to bind to localhost on the IPv4 loopback interface: An attempt was made to access a socket in a way forbidden by its access permission

.NET 7
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The instance of entity type 'IdentityUserLogin<str

TECHNOLOGY
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The instance of entity type 'IdentityUserLogin<string>' cannot be tracked because another instance with the same key value for {'LoginProvider', 'ProviderKey'} is already being tracked

TECHNOLOGY
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How to Code a Windows Service that Updates the Dat

.NET 7
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How to Code a Windows Service that Updates the Database Table Nightly

.NET 7
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[Solved] cannot apply indexing with [] to an expre

TECHNOLOGY
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[Solved] cannot apply indexing with [] to an expression of type QueryString

TECHNOLOGY
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NOTICE[2019]: res_pjsip_session.c:3981 new_invite:

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NOTICE[2019]: res_pjsip_session.c:3981 new_invite: voipms: Call (TCP:2.1.6.8:5060) to extension '88' rejected because extension not found in context 'general'

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RuntimeBinderException: The best overloaded method

.NET 7
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RuntimeBinderException: The best overloaded method match for 'string.Replace(char, char)' has some invalid arguments

.NET 7
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Understanding ASP.Net Core 2.2 Database Context C

.NET 7
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Understanding ASP.Net Core 2.2 Database Context Class

.NET 7
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What is ConfigureAwait(true) in Asp.Net Core 3.1 C

.NET 7
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What is ConfigureAwait(true) in Asp.Net Core 3.1 C#

.NET 7
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What is going on with LinkedIn Access token respon

QUESTIONS
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What is going on with LinkedIn Access token response Error 401

QUESTIONS
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Software Development Good Practices

.NET 7
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Software Development Good Practices

.NET 7
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Microsoft Access Tutorials

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Microsoft Access Tutorials

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Microsoft Access Tutorials

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Microsoft Access Tutorials

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Everything Access Tutorials

TECHNOLOGY
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Everything Access Tutorials

TECHNOLOGY
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How to Choose the Best Hosting for Web Application

COMPUTER PROGRAMMING
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How to Choose the Best Hosting for Web Application

COMPUTER PROGRAMMING
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How to get a User ID in Asp.Net Core 3.1 (ClaimPri

.NET 7
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How to get a User ID in Asp.Net Core 3.1 (ClaimPrincipal) in a Service Repository

.NET 7
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warning CS8632: The annotation for nullable refer

.NET 7
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warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

.NET 7
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SqlException: New transaction is not allowed becau

.NET 7
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SqlException: New transaction is not allowed because there are other threads running in the session

.NET 7
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ObjectDisposedException: Cannot access a disposed context instance

System.ObjectDisposedException: Cannot access a di

System.ObjectDisposedException: Cannot access a disposed context instance. A common cause of this error is disposing a context instance that was resolved from dependecy injection and then later trying to use the same context instance elsewhere in your application.

ObjectDisposedException: Cannot access a disposed

ObjectDisposedException: Cannot access a disposed context instance. A common cause of this error is disposing a context instance that was resolved from dependency injection and then later trying to use the same context instance elsewhere in your application

Asp.Net Core 3.1 Entity Framwork Database Context

Asp.Net Core 3.1 Entity Framwork Database Context Error: System.ObjectDisposedException: 'Cannot access a disposed object

Asp.Net Core EF Core Error: Cannot access a dispos

Asp.Net 5 Application is losing state when enters

Asp.Net 5 Application is losing state when enters an Event Handler C-Sharp

NullReferenceException: Object reference not set t

NullReferenceException: Object reference not set to an instance of an object

InvalidOperationException, A second operation star

InvalidOperationException, A second operation started on this context before a previous operation completed.

Microsoft Data SqlClient SqlException (0x80131904)

Microsoft Data SqlClient SqlException (0x80131904) New transaction is not allowed because there are other threads running in the session

Can not connect to SQL server in docker container

Can not connect to SQL server in docker container from another docker container hosting asp.net core 3.0 application

XmlException: The ':' character, hexadecimal value

XmlException: The ':' character, hexadecimal value 0x3A, cannot be included in a name

[AspNet 5 Entity Framework 6 Error] InvalidOperati

[AspNet 5 Entity Framework 6 Error] InvalidOperationException: The property "ModelName.Id" has a temporary value while attempting to change the entity's state to "Modified". Either set a permanent value explicitly, or ensure that the database is configured to generate values for this property.

setInterval in JavaScript not working

setInterval in JavaScript not working

Asp.Net Core 3.1 Error The 'inject' directive exp

Asp.Net Core 3.1 Error The 'inject' directive expects an identifier

[91 Error Access] Solve 91 Error problem when usin

[91 Error Access] Solve 91 Error problem when using Access DB

Login failed for user . (Microsoft SQL, Error: 184

Login failed for user . (Microsoft SQL, Error: 18456)

System.InvalidOperationException: Error while vali

System.InvalidOperationException: Error while validating the service descriptor 'ServiceType: YOURSERVICE: Singleton ImplementationType: TheRepositoryConsumingTheInterface : Cannot consume scoped service 'DBContext' from singleton 'YourInterface'

Error The instance of entity type ModalType cannot

Error The instance of entity type ModalType cannot be tracked because another instance with the key value {id: 7656544} is already being tracked.

Asp.Net MVC Development Notes

Asp.Net MVC Development Notes

Microsoft SQL Server, Error: 258

Microsoft SQL Server, Error: 258

The instance of entity type 'IdentityUserLogin<str

The instance of entity type 'IdentityUserLogin<string>' cannot be tracked because another instance with the same key value for {'LoginProvider', 'ProviderKey'} is already being tracked

[Access,Excel Linked Table Problem] Solved!!

[Access,Excel Linked Table Problem] Solved!!

Docker Container Micro-Service Error: Can not Conn

Docker Container Micro-Service Error: Can not Connect to SQL Server in Docker Container from Microsoft Sql Server Management

[Solved] Asp.Net Core C-Sharp Error: IOException:

[Solved] Asp.Net Core C-Sharp Error: IOException: The process cannot access file because it is being used by another process

Solved!! Dot Net Core 3.1 Error: Inspecting the st

Solved!! Dot Net Core 3.1 Error: Inspecting the state of an object in the debuggee of type System.Reflection.MethodBase is not supported in this context

C-Sharp 11 Tips and Tricks

C-Sharp 11 Tips and Tricks

Connect to Database Using CMD

Connect to Database Using CMD

System.Net.Sockets.SocketException (10013): An att

System.Net.Sockets.SocketException (10013): An attempt was made to access a socket in a way forbidden by its access permissions

The name 'Category' does not exist in the current

The name 'Category' does not exist in the current context

[Solved]: Invalid version: 16. (Microsoft.SqlServe

[Solved]: Invalid version: 16. (Microsoft.SqlServer.Smo)

[EF Core] How to Enable Sensitive Data Logging and

[EF Core] How to Enable Sensitive Data Logging and Detailed Errors

Be Aware of Memory Leak in Software Application

Be Aware of Memory Leak in Software Application

Connection error 401: permission denied - invalid

Connection error 401: permission denied - invalid PVE ticket

Entity Framework Core 6 and 7 Tips and Tricks

Entity Framework Core 6 and 7 Tips and Tricks

Unable to bind to localhost on the IPv4 loopback i

Unable to bind to localhost on the IPv4 loopback interface: An attempt was made to access a socket in a way forbidden by its access permission

The instance of entity type 'IdentityUserLogin<str

The instance of entity type 'IdentityUserLogin<string>' cannot be tracked because another instance with the same key value for {'LoginProvider', 'ProviderKey'} is already being tracked

How to Code a Windows Service that Updates the Dat

How to Code a Windows Service that Updates the Database Table Nightly

[Solved] cannot apply indexing with [] to an expre

[Solved] cannot apply indexing with [] to an expression of type QueryString

NOTICE[2019]: res_pjsip_session.c:3981 new_invite:

NOTICE[2019]: res_pjsip_session.c:3981 new_invite: voipms: Call (TCP:2.1.6.8:5060) to extension '88' rejected because extension not found in context 'general'

RuntimeBinderException: The best overloaded method

RuntimeBinderException: The best overloaded method match for 'string.Replace(char, char)' has some invalid arguments

Understanding ASP.Net Core 2.2 Database Context C

Understanding ASP.Net Core 2.2 Database Context Class