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Metodo ExecuteScalar (String)

Executes a Transact-SQL statement and returns the first column of the first row as an object value.

Spazio dei nomi  Microsoft.SqlServer.Management.Common
Assembly:  Microsoft.SqlServer.ConnectionInfo (in Microsoft.SqlServer.ConnectionInfo.dll)

Sintassi

'Dichiarazione
Public Function ExecuteScalar ( _
    sqlCommand As String _
) As Object
'Utilizzo
Dim instance As ServerConnection
Dim sqlCommand As String
Dim returnValue As Object

returnValue = instance.ExecuteScalar(sqlCommand)

public Object ExecuteScalar(
    string sqlCommand
)

public:
Object^ ExecuteScalar(
    String^ sqlCommand
)

member ExecuteScalar : 
        sqlCommand:string -> Object 

public function ExecuteScalar(
    sqlCommand : String
) : Object

Parametri

Valore restituito

Tipo: System. . :: . .Object
An Object system object value that specifies the first column of the first row of the result set.

Esempi

C#

ServerConnection conn = new ServerConnection();
conn.DatabaseName = "AdventureWorks2008R2";
costData = conn.ExecuteScalar("SELECT CostRate FROM Production.Location");
Console.WriteLine(costData.ToString());

PowerShell

$conn = new-object Microsoft.SqlServer.Management.Common.ServerConnection
$conn.DatabaseName = "AdventureWorks2008R2"
$reader = $conn.ExecuteScalar("SELECT CostRate FROM Production.Location")
Write-Host $reader