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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.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

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