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Showing content from https://learn.microsoft.com/en-us/dotnet/api/system.data.common.dbcommand below:

DbCommand Class (System.Data.Common) | Microsoft Learn

Attempts to cancel the execution of a DbCommand.

Creates a new instance of a DbParameter object.

Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object.

Creates a new instance of a DbParameter object.

Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.

Releases all resources used by the Component.

Releases the unmanaged resources used by the DbCommand and optionally releases the managed resources.

Releases the unmanaged resources used by the Component and optionally releases the managed resources.

Asynchronously disposes the command object.

Determines whether the specified object is equal to the current object.

Executes the command against its connection, returning a DbDataReader that can be used to access the results.

Providers should implement this method to provide a non-default implementation for ExecuteReader overloads.

The default implementation invokes the synchronous ExecuteReader() method and returns a completed task, blocking the calling thread. The default implementation will return a cancelled task if passed an already cancelled cancellation token. Exceptions thrown by ExecuteReader will be communicated via the returned Task Exception property.

This method accepts a cancellation token that can be used to request the operation to be cancelled early. Implementations may ignore this request.

Executes the command against its connection object, returning the number of rows affected.

An asynchronous version of ExecuteNonQuery(), which executes the command against its connection object, returning the number of rows affected.

Invokes ExecuteNonQueryAsync(CancellationToken) with CancellationToken.None.

This is the asynchronous version of ExecuteNonQuery(). Providers should override with an appropriate implementation. The cancellation token may optionally be ignored.

The default implementation invokes the synchronous ExecuteNonQuery() method and returns a completed task, blocking the calling thread. The default implementation will return a cancelled task if passed an already cancelled cancellation token. Exceptions thrown by ExecuteNonQuery() will be communicated via the returned Task Exception property.

Do not invoke other methods and properties of the DbCommand object until the returned Task is complete.

Executes the command against its connection, returning a DbDataReader that can be used to access the results.

Executes the command against its connection, returning a DbDataReader that can be used to access the results.

An asynchronous version of ExecuteReader, which executes the command against its connection, returning a DbDataReader that can be used to access the results.

Invokes ExecuteDbDataReaderAsync(CommandBehavior, CancellationToken) with CancellationToken.None.

An asynchronous version of ExecuteReader, which executes the command against its connection, returning a DbDataReader that can be used to access the results.

Invokes ExecuteDbDataReaderAsync(CommandBehavior, CancellationToken).

Invokes ExecuteDbDataReaderAsync(CommandBehavior, CancellationToken).

An asynchronous version of ExecuteReader, which executes the command against its connection, returning a DbDataReader that can be used to access the results.

Invokes ExecuteDbDataReaderAsync(CommandBehavior, CancellationToken).

Executes the command and returns the first column of the first row in the first returned result set. All other columns, rows and result sets are ignored.

An asynchronous version of ExecuteScalar(), which executes the command and returns the first column of the first row in the first returned result set. All other columns, rows and result sets are ignored.

Invokes ExecuteScalarAsync(CancellationToken) with CancellationToken.None.

This is the asynchronous version of ExecuteScalar(). Providers should override with an appropriate implementation. The cancellation token may optionally be ignored.

The default implementation invokes the synchronous ExecuteScalar() method and returns a completed task, blocking the calling thread. The default implementation will return a cancelled task if passed an already cancelled cancellation token. Exceptions thrown by ExecuteScalar will be communicated via the returned Task Exception property.

Do not invoke other methods and properties of the DbCommand object until the returned Task is complete.

Serves as the default hash function.

Obsolete.

Retrieves the current lifetime service object that controls the lifetime policy for this instance.

Returns an object that represents a service provided by the Component or by its Container.

Gets the Type of the current instance.

Obsolete.

Obtains a lifetime service object to control the lifetime policy for this instance.

Creates a shallow copy of the current Object.

Creates a shallow copy of the current MarshalByRefObject object.

Creates a prepared (or compiled) version of the command on the data source.

Asynchronously creates a prepared (or compiled) version of the command on the data source.

Returns a string that represents the current object.

Returns a String containing the name of the Component, if any. This method should not be overridden.

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