Solved Solutions to computer programming Errors

An unhandled exception has occurred while executing the request. System.ArgumentNullException: Value cannot be null. (Parameter 'buffer')

.NET 7
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SqlNullValueException: Data is Null. This method o

ENTITY FRAMEWORK
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SqlNullValueException: Data is Null. This method or property cannot be called on Null values

ENTITY FRAMEWORK
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RuntimeBinderException: 'System.Dynamic.DynamicObj

.NET 7
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RuntimeBinderException: 'System.Dynamic.DynamicObject'does not contain a definition for 'Modal'

.NET 7
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An unhandled exception occurred while processing t

.NET 7
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An unhandled exception occurred while processing the request: FormatException: The header contains invalid values at index 0

.NET 7
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[Entity Framework Core 5] An Unhandled Exception O

ENTITY FRAMEWORK
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[Entity Framework Core 5] An Unhandled Exception Occurred While Processing the Request

ENTITY FRAMEWORK
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Software Development Refactoring Wisdom I gained t

SOFTWARE DEVELOPMENT
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Software Development Refactoring Wisdom I gained through Reviewing My Own Code

SOFTWARE DEVELOPMENT
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Asp.Net Programming Bad Practices

ALGORITHMS
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Asp.Net Programming Bad Practices

ALGORITHMS
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InvalidOperationException: An exception was thrown

ENTITY FRAMEWORK
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InvalidOperationException: An exception was thrown while attempting to evaluate the LINQ query parameter expression

ENTITY FRAMEWORK
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System.IO.FileNotFoundException: Could not load fi

.NET 7
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System.IO.FileNotFoundException: Could not load file or assembly 'System.Runtime.CompilerServices.Unsafe, Version=6.0.0.0, Culture=neutral

.NET 7
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iis just in time debugging error

SERVERS
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iis just in time debugging error

SERVERS
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Cannot insert the value NULL into column 'Id', tab

RESEARCH
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Cannot insert the value NULL into column 'Id', table 'TableName'; column does not allow nulls. INSERT fails

RESEARCH
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[Solved] Asp.Net Core 3.1 config.GetSection return

.NET 7
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[Solved] Asp.Net Core 3.1 config.GetSection returns null. AppSettings.json null values.

.NET 7
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What does COALESCE do in SQL

SQL
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What does COALESCE do in SQL

SQL
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How to check if string is null before replacing ch

SQL
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How to check if string is null before replacing charecters in C-Sharp (C#)

SQL
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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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StreamJsonRpc.RemoteInvocationException: Cannot fi

QUESTIONS
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StreamJsonRpc.RemoteInvocationException: Cannot find the old value Parameter name: oldValue

QUESTIONS
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SqlNullValueException: Data is Null. This method o

QUESTIONS
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SqlNullValueException: Data is Null. This method or property cannot be called on Null values

QUESTIONS
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_context.ChangeTracker 'threw an exception of type

.NET 7
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_context.ChangeTracker 'threw an exception of type 'System.ObjectDisposedException'

.NET 7
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Asp.Net Core Error: InvalidOperationException: The

.NET 7
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Asp.Net Core Error: InvalidOperationException: The database generated a null value for non-nullable property 'PropertyName' of entity type 'EntityName'. Ensure value generation configuration in the database matches the configuration in the model

.NET 7
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InvalidOperationException: Incorrect Content-Type

MVC
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InvalidOperationException: Incorrect Content-Type

MVC
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Asp.Net Adding Object to Database Error: Collectio

.NET 7
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Asp.Net Adding Object to Database Error: Collection was modified; enumeration operation may not execute

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

ENTITY FRAMEWORK
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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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[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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Cassandra Entity Framework Error "TypeLoadExceptio

QUESTIONS
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Cassandra Entity Framework Error "TypeLoadException: Method 'GenerateScript' in type"

QUESTIONS
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There is no remote user 'distributor_admin' mapped

SQL
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There is no remote user 'distributor_admin' mapped to local user '(null)' from the remote server 'repl_distributor'.

SQL
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No matching IPassiveHealthCheckPolicy found for th

QUESTIONS
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No matching IPassiveHealthCheckPolicy found for the passive health check policy name 'TransportFailureRateHealthPolicy'

QUESTIONS
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[Solved] Entity Framework Core (EF 6) Error: Unabl

ENTITY FRAMEWORK
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[Solved] Entity Framework Core (EF 6) Error: Unable to track an entity of type 'YourModalName' because primary key property 'id' is null.

ENTITY FRAMEWORK
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System.TypeInitializationException: The type initi

LUNUX
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System.TypeInitializationException: The type initializer for 'Gdip' threw an exception

LUNUX
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Unhandled exception. System.InvalidOperationExcept

.NET 7
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Unhandled exception. System.InvalidOperationException: This platform doesn't support QUIC or HTTP3

.NET 7
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How to get localized string from ASP.NET Core Cont

.NET 7
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How to get localized string from ASP.NET Core Controller Work Around

.NET 7
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[Solved] System.InvalidOperationException: 'Unable

QUESTIONS
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[Solved] System.InvalidOperationException: 'Unable to track an entity of type 'EntityName' because its primary key property 'Id' is null

QUESTIONS
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Find Out Which Database Contain A Table

DATABASES
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Find Out Which Database Contain A Table

DATABASES
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What is New in C-Sharp 9 ( Developing Notes )

C-SHARP
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What is New in C-Sharp 9 ( Developing Notes )

C-SHARP
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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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Application startup exception: System.InvalidOpera

MVC
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Application startup exception: System.InvalidOperationException: Cannot resolve scoped service from root provider

MVC
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How to Optimize Web Server for Faster Response Tim

TECHNOLOGY
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How to Optimize Web Server for Faster Response Time

TECHNOLOGY
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InvalidOperation: The connection was not closed. T

ENTITY FRAMEWORK
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InvalidOperation: The connection was not closed. The connections current state is connecting

ENTITY FRAMEWORK
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ArgumentException: Affinity key name set on the cl

SERVERS
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ArgumentException: Affinity key name set on the cluster 'allclusterprops' must not be null.

SERVERS
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An Exception was thrown while attempting to evalua

.NET 7
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An Exception was thrown while attempting to evaluate the LINQ query parameter expression

.NET 7
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Entity Framework Core Error: Unable to track an en

ENTITY FRAMEWORK
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Entity Framework Core Error: Unable to track an entity of type "Model Class Object" because primary key property 'id' is null

ENTITY FRAMEWORK
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Drupal 8 Bootstrap 4 Not Loading CSS Files

BOOTSTRAP
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Drupal 8 Bootstrap 4 Not Loading CSS Files

BOOTSTRAP
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NotSupportedException: Path 'wwwroot myfolder file

.NET 7
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NotSupportedException: Path 'wwwroot myfolder filename.txt' was not rooted

.NET 7
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[EF Core] How to Enable Sensitive Data Logging and

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

ENTITY FRAMEWORK
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An Exception occurred in the database while saving

.NET 7
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An Exception occurred in the database while saving changes for context type 'ContextType' Microsoft.Data.SqlClient.SqlException (0x80131904)

.NET 7
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The configured execution strategy 'SlqServerRetryi

.NET 7
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The configured execution strategy 'SlqServerRetryingExecutionStrategy' does not support user-initiated transactions. Use the execution strategy returned by DbContext.Database.CreateExecutionStrategy()' to execute

.NET 7
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System.InvalidOperationException: The ConnectionSt

ENTITY FRAMEWORK
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System.InvalidOperationException: The ConnectionString property has not been initialized [EF Core 7, Asp.Net 7]

ENTITY FRAMEWORK
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InvalidOperationException: An error was generated

.NET 7
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InvalidOperationException: An error was generated for warning 'Microsoft.EntityFrameworkCore.Query.InvalidIncludePathError': Unable to find navigation 'EntityName' specified in string based include path 'AnotherEntity Name'.

.NET 7
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SqlException: Cannot insert the value NULL into co

ENTITY FRAMEWORK
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SqlException: Cannot insert the value NULL into column 'Id', table 'dbo.TableName'; column does not allow nulls. INSERT fails. The statement has been terminated

ENTITY FRAMEWORK
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Keyword or statement option 'bulkadmin' is not sup

SQL
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Keyword or statement option 'bulkadmin' is not supported on the 'Linux' platform

SQL
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Null Exception

NullReferenceException: Object reference not set t

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

An unhandled exception has occurred while executin

An unhandled exception has occurred while executing the request. System.ArgumentNullException: Value cannot be null. (Parameter 'buffer')

SqlNullValueException: Data is Null. This method o

SqlNullValueException: Data is Null. This method or property cannot be called on Null values

RuntimeBinderException: 'System.Dynamic.DynamicObj

RuntimeBinderException: 'System.Dynamic.DynamicObject'does not contain a definition for 'Modal'

An unhandled exception occurred while processing t

An unhandled exception occurred while processing the request: FormatException: The header contains invalid values at index 0

[Entity Framework Core 5] An Unhandled Exception O

[Entity Framework Core 5] An Unhandled Exception Occurred While Processing the Request

Software Development Refactoring Wisdom I gained t

Software Development Refactoring Wisdom I gained through Reviewing My Own Code

Asp.Net Programming Bad Practices

Asp.Net Programming Bad Practices

InvalidOperationException: An exception was thrown

InvalidOperationException: An exception was thrown while attempting to evaluate the LINQ query parameter expression

System.IO.FileNotFoundException: Could not load fi

System.IO.FileNotFoundException: Could not load file or assembly 'System.Runtime.CompilerServices.Unsafe, Version=6.0.0.0, Culture=neutral

iis just in time debugging error

iis just in time debugging error

Cannot insert the value NULL into column 'Id', tab

Cannot insert the value NULL into column 'Id', table 'TableName'; column does not allow nulls. INSERT fails

[Solved] Asp.Net Core 3.1 config.GetSection return

[Solved] Asp.Net Core 3.1 config.GetSection returns null. AppSettings.json null values.

What does COALESCE do in SQL

What does COALESCE do in SQL

How to check if string is null before replacing ch

How to check if string is null before replacing charecters in C-Sharp (C#)

warning CS8632: The annotation for nullable refer

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

StreamJsonRpc.RemoteInvocationException: Cannot fi

StreamJsonRpc.RemoteInvocationException: Cannot find the old value Parameter name: oldValue

SqlNullValueException: Data is Null. This method o

SqlNullValueException: Data is Null. This method or property cannot be called on Null values

_context.ChangeTracker 'threw an exception of type

_context.ChangeTracker 'threw an exception of type 'System.ObjectDisposedException'

Asp.Net Core Error: InvalidOperationException: The

Asp.Net Core Error: InvalidOperationException: The database generated a null value for non-nullable property 'PropertyName' of entity type 'EntityName'. Ensure value generation configuration in the database matches the configuration in the model

InvalidOperationException: Incorrect Content-Type

InvalidOperationException: Incorrect Content-Type

Asp.Net Adding Object to Database Error: Collectio

Asp.Net Adding Object to Database Error: Collection was modified; enumeration operation may not execute

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

[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

Cassandra Entity Framework Error "TypeLoadExceptio

Cassandra Entity Framework Error "TypeLoadException: Method 'GenerateScript' in type"

There is no remote user 'distributor_admin' mapped

There is no remote user 'distributor_admin' mapped to local user '(null)' from the remote server 'repl_distributor'.

No matching IPassiveHealthCheckPolicy found for th

No matching IPassiveHealthCheckPolicy found for the passive health check policy name 'TransportFailureRateHealthPolicy'

[Solved] Entity Framework Core (EF 6) Error: Unabl

[Solved] Entity Framework Core (EF 6) Error: Unable to track an entity of type 'YourModalName' because primary key property 'id' is null.

System.TypeInitializationException: The type initi

System.TypeInitializationException: The type initializer for 'Gdip' threw an exception

Unhandled exception. System.InvalidOperationExcept

Unhandled exception. System.InvalidOperationException: This platform doesn't support QUIC or HTTP3

How to get localized string from ASP.NET Core Cont

How to get localized string from ASP.NET Core Controller Work Around

[Solved] System.InvalidOperationException: 'Unable

[Solved] System.InvalidOperationException: 'Unable to track an entity of type 'EntityName' because its primary key property 'Id' is null

Find Out Which Database Contain A Table

Find Out Which Database Contain A Table

What is New in C-Sharp 9 ( Developing Notes )

What is New in C-Sharp 9 ( Developing Notes )

C-Sharp 11 Tips and Tricks

C-Sharp 11 Tips and Tricks

Application startup exception: System.InvalidOpera

Application startup exception: System.InvalidOperationException: Cannot resolve scoped service from root provider

How to Optimize Web Server for Faster Response Tim

How to Optimize Web Server for Faster Response Time

InvalidOperation: The connection was not closed. T

InvalidOperation: The connection was not closed. The connections current state is connecting

ArgumentException: Affinity key name set on the cl

ArgumentException: Affinity key name set on the cluster 'allclusterprops' must not be null.

An Exception was thrown while attempting to evalua

An Exception was thrown while attempting to evaluate the LINQ query parameter expression