System.Data.SqlClient Namespace

The System.Data.SqlClient namespace is the.NET Framework Data Provider for SQL Server.

Remarks

The.NET Framework Data Provider for SQL Server describes a collection of classes used to access a SQL Server database in the managed space. Using the SqlDataAdapter, you can fill a memory-resident DataSet that you can use to query and update the database.

Note:

For conceptual information about using this namespace when programming with the .NET Framework, see Using the .NET Framework Data Provider for SQL Server.

Classes

TypeReason
OnChangeEventHandler

Handles the SqlDependency.OnChange event that is fired when a notification is received for any of the commands associated with a SqlDependency object.

SqlBulkCopy

Lets you efficiently bulk load a SQL Server table with data from another source.

SqlBulkCopyColumnMapping

Defines the mapping between a column in a SqlBulkCopy instance's data source and a column in the instance's destination table.

SqlBulkCopyColumnMappingCollection

Collection of SqlBulkCopyColumnMapping objects that inherits from CollectionBase.

SqlBulkCopyOptions

Bitwise flag that specifies one or more options to use with an instance of SqlBulkCopy.

SqlClientFactory

Represents a set of methods for creating instances of the System.Data.SqlClient provider's implementation of the data source classes.

SqlClientMetaDataCollectionNames

Provides a list of constants for use with the GetSchema method to retrieve metadata collections.

SqlClientPermission

Enables the .NET Framework Data Provider for SQL Server to help make sure that a user has a security level sufficient to access a data source.

SqlClientPermissionAttribute

Associates a security action with a custom security attribute.

SqlCommand

Represents a Transact-SQL statement or stored procedure to execute against a SQL Server database. This class cannot be inherited.

SqlCommandBuilder

Automatically generates single-table commands that are used to reconcile changes made to a DataSet with the associated SQL Server database. This class cannot be inherited.

SqlConnection

Represents an open connection to a ssNoVersion database. This class cannot be inherited.

SqlConnectionStringBuilder

Provides a simple way to create and manage the contents of connection strings used by the SqlConnection class.

SqlDataAdapter

Represents a set of data commands and a database connection that are used to fill the DataSet and update a SQL Server database. This class cannot be inherited.

SqlDataReader

Provides a way of reading a forward-only stream of rows from a SQL Server database. This class cannot be inherited.

SQLDebugging

Included to support debugging applications. Not intended for direct use.

SqlDependency

The SqlDependency object represents a query notification dependency between an application and an instance of SQL Server. An application can create a SqlDependency object and register to receive notifications via the OnChangeEventHandler event handler.

SqlError

Collects information relevant to a warning or error returned by SQL Server.

SqlErrorCollection

Collects all errors generated by the .NET Framework Data Provider for SQL Server. This class cannot be inherited.

SqlException

The exception that is thrown when SQL Server returns a warning or error. This class cannot be inherited.

SqlInfoMessageEventArgs

Provides data for the SqlConnection.InfoMessage event.

SqlInfoMessageEventHandler

Represents the method that will handle the SqlConnection.InfoMessage event of a SqlConnection.

SqlNotificationEventArgs

Represents the set of arguments passed to the notification event handler.

SqlNotificationInfo

This enumeration provides additional information about the different notifications that can be received by the dependency event handler.

SqlNotificationSource

Indicates the source of the notification received by the dependency event handler.

SqlNotificationType

Describes the different notification types that can be received by an OnChangeEventHandler event handler through the SqlNotificationEventArgs parameter.

SqlParameter

Represents a parameter to a SqlCommand and optionally its mapping to DataSet columns. This class cannot be inherited. For more information on parameters, see Configuring Parameters and Parameter Data Types (ADO.NET).

SqlParameterCollection

Represents a collection of parameters associated with a SqlCommand and their respective mappings to columns in a DataSet. This class cannot be inherited.

SqlRowsCopiedEventArgs

Represents the set of arguments passed to the SqlRowsCopiedEventHandler.

SqlRowsCopiedEventHandler

Represents the method that handles the SqlBulkCopy.SqlRowsCopied event of a SqlBulkCopy.

SqlRowUpdatedEventArgs

Provides data for the SqlDataAdapter.RowUpdated event.

SqlRowUpdatedEventHandler

Represents the method that will handle the SqlDataAdapter.RowUpdated event of a SqlDataAdapter.

SqlRowUpdatingEventArgs

Provides data for the SqlDataAdapter.RowUpdating event.

SqlRowUpdatingEventHandler

Represents the method that will handle the SqlDataAdapter.RowUpdating event of a SqlDataAdapter.

SqlTransaction

Represents a tsql transaction to be made in a ssNoVersion database. This class cannot be inherited.