IRelationalCommand.ExecuteScalar Metodo
Definizione
Importante
Alcune informazioni sono relative alla release non definitiva del prodotto, che potrebbe subire modifiche significative prima della release definitiva. Microsoft non riconosce alcuna garanzia, espressa o implicita, in merito alle informazioni qui fornite.
Overload
| ExecuteScalar(RelationalCommandParameterObject) |
Esegue il comando con un singolo risultato scalare. |
| ExecuteScalar(IRelationalConnection, IReadOnlyDictionary<String,Object>) |
Esegue il comando con un singolo risultato scalare. |
| ExecuteScalar(IRelationalConnection, IReadOnlyDictionary<String,Object>, Boolean) |
Obsoleti.
Esegue il comando con un singolo risultato scalare. |
ExecuteScalar(RelationalCommandParameterObject)
Esegue il comando con un singolo risultato scalare.
public object ExecuteScalar (Microsoft.EntityFrameworkCore.Storage.RelationalCommandParameterObject parameterObject);public object? ExecuteScalar (Microsoft.EntityFrameworkCore.Storage.RelationalCommandParameterObject parameterObject);abstract member ExecuteScalar : Microsoft.EntityFrameworkCore.Storage.RelationalCommandParameterObject -> objPublic Function ExecuteScalar (parameterObject As RelationalCommandParameterObject) As ObjectParametri
- parameterObject
- RelationalCommandParameterObject
Parametri per questo metodo.
Restituisce
Risultato del comando.
Si applica a
ExecuteScalar(IRelationalConnection, IReadOnlyDictionary<String,Object>)
Esegue il comando con un singolo risultato scalare.
public object ExecuteScalar (Microsoft.EntityFrameworkCore.Storage.IRelationalConnection connection, System.Collections.Generic.IReadOnlyDictionary<string,object> parameterValues);abstract member ExecuteScalar : Microsoft.EntityFrameworkCore.Storage.IRelationalConnection * System.Collections.Generic.IReadOnlyDictionary<string, obj> -> objPublic Function ExecuteScalar (connection As IRelationalConnection, parameterValues As IReadOnlyDictionary(Of String, Object)) As ObjectParametri
- connection
- IRelationalConnection
Connessione da eseguire.
- parameterValues
- IReadOnlyDictionary<String,Object>
Valori per i parametri.
Restituisce
Risultato del comando.
Si applica a
ExecuteScalar(IRelationalConnection, IReadOnlyDictionary<String,Object>, Boolean)
Attenzione
Use overload without 'manageConnection' parameter
Esegue il comando con un singolo risultato scalare.
public object ExecuteScalar (Microsoft.EntityFrameworkCore.Storage.IRelationalConnection connection, System.Collections.Generic.IReadOnlyDictionary<string,object> parameterValues = default, bool manageConnection = true);[System.Obsolete("Use overload without 'manageConnection' parameter")]
public object ExecuteScalar (Microsoft.EntityFrameworkCore.Storage.IRelationalConnection connection, System.Collections.Generic.IReadOnlyDictionary<string,object> parameterValues, bool manageConnection);abstract member ExecuteScalar : Microsoft.EntityFrameworkCore.Storage.IRelationalConnection * System.Collections.Generic.IReadOnlyDictionary<string, obj> * bool -> obj[<System.Obsolete("Use overload without 'manageConnection' parameter")>]
abstract member ExecuteScalar : Microsoft.EntityFrameworkCore.Storage.IRelationalConnection * System.Collections.Generic.IReadOnlyDictionary<string, obj> * bool -> objPublic Function ExecuteScalar (connection As IRelationalConnection, Optional parameterValues As IReadOnlyDictionary(Of String, Object) = Nothing, Optional manageConnection As Boolean = true) As ObjectPublic Function ExecuteScalar (connection As IRelationalConnection, parameterValues As IReadOnlyDictionary(Of String, Object), manageConnection As Boolean) As ObjectParametri
- connection
- IRelationalConnection
Connessione da eseguire.
- parameterValues
- IReadOnlyDictionary<String,Object>
Valori per i parametri.
- manageConnection
- Boolean
Valore che indica se aprire e chiudere la connessione in base alle esigenze.
Restituisce
Risultato del comando.
- Attributi
