DbExtensions.GetValueOrDefaultAsync Method

Definition

Namespace:

Orleans.SqlUtils

Assembly:

OrleansSQLUtils.dll

Package:

Microsoft.Orleans.OrleansSqlUtils v1.5.10

Overloads

GetValueOrDefaultAsync<TValue>(DbDataReader, Int32, TValue)	Returns a value if it is not DBNull, default(TValue) otherwise.
GetValueOrDefaultAsync<TValue>(DbDataReader, String, TValue)	Returns a value if it is not DBNull, default(TValue) otherwise.

GetValueOrDefaultAsync<TValue>(DbDataReader, Int32, TValue)

Returns a value if it is not DBNull, default(TValue) otherwise.

public static System.Threading.Tasks.Task<TValue> GetValueOrDefaultAsync<TValue> (this System.Data.Common.DbDataReader record, int ordinal, TValue default = default);

static member GetValueOrDefaultAsync : System.Data.Common.DbDataReader * int * 'Value -> System.Threading.Tasks.Task<'Value>

<Extension()>
Public Function GetValueOrDefaultAsync(Of TValue) (record As DbDataReader, ordinal As Integer, Optional default As TValue = Nothing) As Task(Of TValue)

Type Parameters

TValue

The type of the value to request.

Parameters

record

DbDataReader

The record from which to retrieve the value.

ordinal

Int32

The ordinal of the fieldname.

default

TValue

The default value if value in position is DBNull.

Returns

Task<TValue>

Either the given value or the default for the requested type.

Exceptions

IndexOutOfRangeException

GetValueOrDefaultAsync<TValue>(DbDataReader, String, TValue)

Returns a value if it is not DBNull, default(TValue) otherwise.

public static System.Threading.Tasks.Task<TValue> GetValueOrDefaultAsync<TValue> (this System.Data.Common.DbDataReader record, string fieldName, TValue default = default);

static member GetValueOrDefaultAsync : System.Data.Common.DbDataReader * string * 'Value -> System.Threading.Tasks.Task<'Value>

<Extension()>
Public Function GetValueOrDefaultAsync(Of TValue) (record As DbDataReader, fieldName As String, Optional default As TValue = Nothing) As Task(Of TValue)

Type Parameters

TValue

The type of the value to request.

Parameters

record

DbDataReader

The record from which to retrieve the value.

fieldName

String

The name of the field to retrieve.

default

TValue

The default value if value in position is DBNull.

Returns

Task<TValue>

Either the given value or the default for the requested type.

Exceptions

IndexOutOfRangeException

Remarks

This function throws if the given does not exist.