Session.GetObjectsFromSprocParametrizedAsync<T>(CancellationToken, String, SprocParameter[]) Method

Executes a stored procedure with named parameters and returns its result set as a collection of non-persistent objects.

Namespace: DevExpress.Xpo

Assembly: DevExpress.Xpo.v25.1.dll

NuGet Package: DevExpress.Xpo

Declaration

C#

public Task<ICollection<T>> GetObjectsFromSprocParametrizedAsync<T>(
    CancellationToken cancellationToken,
    string sprocName,
    params SprocParameter[] parameters
)

VB.NET

Public Function GetObjectsFromSprocParametrizedAsync(Of T)(
    cancellationToken As CancellationToken,
    sprocName As String,
    ParamArray parameters As SprocParameter()
) As Task(Of ICollection(Of T))

Parameters

Name	Type	Description
cancellationToken	CancellationToken	A CancellationToken object that delivers a cancellation notice to the running operation.
sprocName	String	A String value that specifies the stored procedure’s name.
parameters	DevExpress.Xpo.DB.SprocParameter[]	An array of SprocParameter objects specifying parameters to pass to the stored procedure.

Type Parameters

Name	Description
T	The type of objects returned by the method. A class that implements this type sould be decorated with NonPersistentAttribute.

Returns

Type	Description
Task<ICollection<T>>	A Task<TResult> that returns a collection of non-persistent objects of the specified type that are instantiated with data obtained via the specified stored procedure.

Remarks

C#

ICollection<CustOrderHistModel> sprocResultData = await session.GetObjectsFromSprocParametrizedAsync<CustOrderHistModel>(CancellationToken.None, "CustOrderHist", new SprocParameter("CustomerID", "ALFKI"));

VB.NET

Dim sprocResultData As ICollection(Of CustOrderHistModel) = Await session.GetObjectsFromSprocParametrizedAsync(Of CustOrderHistModel)(CancellationToken.None, "CustOrderHist", New SprocParameter("CustomerID", "ALFKI"))

This method performs the following:

• Executes the specified stored procedure with parameters and obtains the result as a result set.
• Populates a collection with classInfo objects that are instantiated with the result set’s data based on the mapping information passed as the members parameter. Note that classInfo should represent a non-persistent class decorated with a NonPersistentAttribute.

This method takes named parameters. The parameter order is arbitrary. The SprocParameter.Direction property should be set to Output for out parameters. Based on the current ADO.NET provider, the data type (SprocParameter.DbType), scale (SprocParameter.Scale) and precision (SprocParameter.Precision) may be required.

To learn more about executing stored procedures in XPO and retrieving objects from the results, refer to Stored Procedures.