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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

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Asp.Net Core 3.1 Entity Framwork Database Context

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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.

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InvalidOperationException, A second operation star

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

ENTITY FRAMEWORK
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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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Microsoft Data SqlClient SqlException (0x80131904)

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

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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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[Solved] InvalidOperationException: The entity typ

MVC
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[Solved] InvalidOperationException: The entity type 'TableNameOrModelName' requires a primary key to be defined. If you intended to use a keyless entity type call 'HasNoKey()'.

MVC
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How to Solve XUnit Automated Testing Error: Castle

MVC
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How to Solve XUnit Automated Testing Error: Castle DynamicProxy InvalidProxyConstructorArgumentsException

MVC
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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.

OTHER
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System.InvalidOperationException: The ConnectionSt

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

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NullReferenceException: Object reference not set t

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

TECHNOLOGY
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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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Cannot create a DbSet for "MyModal" because this t

.NET 7
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Cannot create a DbSet for "MyModal" because this type is not included in the model for the context. However the model contains an entity type with the same name in a different namespace

.NET 7
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How to Count the Number of records in the Database

.NET 7
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How to Count the Number of records in the Database Table using Asp.Net Core Entity Framework Core

.NET 7
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Software Development Good Practices

.NET 7
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Software Development Good Practices

.NET 7
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Entity Framework Core Error: To change the IDENTIT

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Entity Framework Core Error: To change the IDENTITY property of a column, the column needs to be dropped and recreated

ENTITY FRAMEWORK
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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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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] 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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Incorrect syntax near the keyword 'with'

SQL
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Incorrect syntax near the keyword 'with'

SQL
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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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Entity Framework Core 6 and 7 Tips and Tricks

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Entity Framework Core 6 and 7 Tips and Tricks

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Asp.Net Core 3.1 Entity Framework Core DateTime fi

.NET 7
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Asp.Net Core 3.1 Entity Framework Core DateTime field getting updated to 1/1/0001

.NET 7
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Microsoft.EntityFrameworkCore.Database.Transaction

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Microsoft.EntityFrameworkCore.Database.Transaction[20205] An error occurred using a transaction.

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

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

OTHER
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Asp.Net Core MVC Razor View Form not posting data

.NET 7
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Asp.Net Core MVC Razor View Form not posting data to the Server-Side

.NET 7
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Asp.Net 5 Application is losing state when enters

.NET 7
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Asp.Net 5 Application is losing state when enters an Event Handler C-Sharp

.NET 7
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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

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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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How to Bind a CheckBox data to a Model Integer Pro

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How to Bind a CheckBox data to a Model Integer Property in DotNet Core 2.2

DATABASES
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Facts Tables (Database)

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Facts Tables (Database)

DATABASES
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Facts Tables (Database)

DATABASES
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Facts Tables (Database)

DATABASES
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What is New in Asp Net 7 and EF Core 7 (Best Featu

RESEARCH
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What is New in Asp Net 7 and EF Core 7 (Best Features)

RESEARCH
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ObjectDisposedException: Cannot access a disposed

.NET 7
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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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Access Database IF Statement

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Access Database IF Statement

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Elastic Search Database Engine

DATABASES
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Elastic Search Database Engine

DATABASES
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Arithmetic overflow error converting expression to

Arithmetic overflow error converting expression to data type bigint

OTHER
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How to create SQL file in one command on Windows

SQL
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How to create SQL file in one command on Windows

SQL
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How do you get an ID of recording getting inserted

SQL
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How do you get an ID of recording getting inserted in sql

SQL
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How to Optimize SQL Query in SQL Server

OTHER
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How to Insert two corresponding columns into a tem

How to Insert two corresponding columns into a temp table using SQL in Microsoft SQL Server

OTHER
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Attach and Detach Database Errors

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Attach and Detach Database Errors

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Connect to Database Using CMD

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Connect to Database Using CMD

DATABASES
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MySQL Database and Composer Commands

SQL
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MySQL Database and Composer Commands

SQL
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Asp.Net Core 3.1 MVC 5 Error ViewBag does not Exis

.NET 7
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Asp.Net Core 3.1 MVC 5 Error ViewBag does not Exist in the Current Context

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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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Access Database Over Limit Of 2GB

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Access Database Over Limit Of 2GB

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Access Database Over Limit Of 2GB

DATABASES
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Access Database Over Limit Of 2GB

DATABASES
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Database Context

Understanding ASP.Net Core 2.2 Database Context C

Understanding ASP.Net Core 2.2 Database Context Class

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

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

InvalidOperationException, A second operation star

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

SqlException: New transaction is not allowed becau

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

Microsoft Data SqlClient SqlException (0x80131904)

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

An Exception occurred in the database while saving

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

[Solved] InvalidOperationException: The entity typ

[Solved] InvalidOperationException: The entity type 'TableNameOrModelName' requires a primary key to be defined. If you intended to use a keyless entity type call 'HasNoKey()'.

How to Solve XUnit Automated Testing Error: Castle

How to Solve XUnit Automated Testing Error: Castle DynamicProxy InvalidProxyConstructorArgumentsException

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.

System.InvalidOperationException: The ConnectionSt

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

NullReferenceException: Object reference not set t

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

[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.

Cannot create a DbSet for "MyModal" because this t

Cannot create a DbSet for "MyModal" because this type is not included in the model for the context. However the model contains an entity type with the same name in a different namespace

How to Count the Number of records in the Database

How to Count the Number of records in the Database Table using Asp.Net Core Entity Framework Core

Software Development Good Practices

Software Development Good Practices

Entity Framework Core Error: To change the IDENTIT

Entity Framework Core Error: To change the IDENTITY property of a column, the column needs to be dropped and recreated

The configured execution strategy 'SlqServerRetryi

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

How to Code a Windows Service that Updates the Dat

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

[Solved] System.InvalidOperationException: 'Unable

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

Incorrect syntax near the keyword 'with'

Incorrect syntax near the keyword 'with'

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.

Entity Framework Core 6 and 7 Tips and Tricks

Entity Framework Core 6 and 7 Tips and Tricks

Asp.Net Core 3.1 Entity Framework Core DateTime fi

Asp.Net Core 3.1 Entity Framework Core DateTime field getting updated to 1/1/0001

Microsoft.EntityFrameworkCore.Database.Transaction

Microsoft.EntityFrameworkCore.Database.Transaction[20205] An error occurred using a transaction.

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

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

Asp.Net Core MVC Razor View Form not posting data

Asp.Net Core MVC Razor View Form not posting data to the Server-Side

Asp.Net 5 Application is losing state when enters

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

[EF Core] How to Enable Sensitive Data Logging and

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

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'

How to Bind a CheckBox data to a Model Integer Pro

How to Bind a CheckBox data to a Model Integer Property in DotNet Core 2.2

Facts Tables (Database)

Facts Tables (Database)

Facts Tables (Database)

Facts Tables (Database)

What is New in Asp Net 7 and EF Core 7 (Best Featu

What is New in Asp Net 7 and EF Core 7 (Best Features)

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

Access Database IF Statement

Access Database IF Statement

Elastic Search Database Engine

Elastic Search Database Engine

Arithmetic overflow error converting expression to

Arithmetic overflow error converting expression to data type bigint

How to create SQL file in one command on Windows

How to create SQL file in one command on Windows