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OdbcCommand.ExecuteScalar Method

Executes the query, and returns the first column of the first row in the result set returned by the query. Additional columns or rows are ignored.

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

public override Object ExecuteScalar()

Return Value

Type: System.Object
The first column of the first row in the result set, or a null reference if the result set is empty.

Implements

IDbCommand.ExecuteScalar()

Use the ExecuteScalar method to retrieve a single value (for example, an aggregate value) from a data source. This requires less code than using the ExecuteReader method, and then performing the operations required to generate the single value from the data returned by an OdbcDataReader.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1

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