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OdbcCommand Class

Represents an SQL statement or stored procedure to execute against a data source. This class cannot be inherited.

Namespace: System.Data.Odbc
Assembly: System.Data (in system.data.dll)

'Declaration
Public NotInheritable Class OdbcCommand
	Inherits DbCommand
	Implements ICloneable
'Usage
Dim instance As OdbcCommand

public final class OdbcCommand extends DbCommand implements ICloneable
public final class OdbcCommand extends DbCommand implements ICloneable
Not applicable.

The OdbcCommand class provides the following methods for executing commands against a data source:

Item

Description

ExecuteReader

Executes commands that return rows.

ExecuteNonQuery

Executes commands such as SQL INSERT, DELETE, UPDATE, and SET statements.

ExecuteScalar

Retrieves a single value, for example, an aggregate value, from a database.

You can reset the CommandText property and reuse the OdbcCommand object. However, you must close the OdbcDataReader before you can execute a new or previous command.

If execution of the command causes a fatal OdbcException such as a SQL Server severity level of 20 or more, OdbcConnection may close. However, the user can reopen the connection and continue.

The following example uses the ExecuteReader method of the OdbcCommand class, together with the OdbcDataReader and OdbcConnection classes, to select rows from a table.

Public Sub InsertRow(ByVal connectionString As String, _
    ByVal insertSQL As String)

    Using connection As New OdbcConnection(connectionString)
        ' The insertSQL string contains a SQL statement that
        ' inserts a new row in the source table.
        Dim command As New OdbcCommand(insertSQL, connection)

        ' Open the connection and execute the insert command.
        Try
            connection.Open()
            command.ExecuteNonQuery()
        Catch ex As Exception
            Console.WriteLine(ex.Message)
        End Try
        ' The connection is automatically closed when the
        ' code exits the Using block.
    End Using
End Sub

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1

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