ReaderColumn<T> 构造函数

定义

重载

ReaderColumn<T>(Boolean, String, Func<DbDataReader,Int32[],T>)
已过时.

创建 ReaderColumn<T> 类的新实例。

ReaderColumn<T>(Boolean, String, IPropertyBase, Func<DbDataReader,Int32[],T>)

创建 ReaderColumn<T> 类的新实例。

ReaderColumn<T>(Boolean, String, Func<DbDataReader,Int32[],T>)

注意

Use constructor which also takes IPropertyBase.

创建 ReaderColumn<T> 类的新实例。

public ReaderColumn (bool nullable, string name, Func<System.Data.Common.DbDataReader,int[],T> getFieldValue);
[System.Obsolete("Use constructor which also takes IPropertyBase.")]
public ReaderColumn (bool nullable, string name, Func<System.Data.Common.DbDataReader,int[],T> getFieldValue);
[System.Obsolete("Use constructor which also takes IPropertyBase.")]
public ReaderColumn (bool nullable, string? name, Func<System.Data.Common.DbDataReader,int[],T> getFieldValue);
new Microsoft.EntityFrameworkCore.Storage.ReaderColumn<'T> : bool * string * Func<System.Data.Common.DbDataReader, int[], 'T> -> Microsoft.EntityFrameworkCore.Storage.ReaderColumn<'T>
[<System.Obsolete("Use constructor which also takes IPropertyBase.")>]
new Microsoft.EntityFrameworkCore.Storage.ReaderColumn<'T> : bool * string * Func<System.Data.Common.DbDataReader, int[], 'T> -> Microsoft.EntityFrameworkCore.Storage.ReaderColumn<'T>
Public Sub New (nullable As Boolean, name As String, getFieldValue As Func(Of DbDataReader, Integer(), T))

参数

nullable
Boolean

一个值,该值指示列是否可为 null。

name
String

列的名称。

getFieldValue
Func<DbDataReader,Int32[],T>

用于从读取器获取列的字段值的函数。

属性

适用于

ReaderColumn<T>(Boolean, String, IPropertyBase, Func<DbDataReader,Int32[],T>)

创建 ReaderColumn<T> 类的新实例。

public ReaderColumn (bool nullable, string name, Microsoft.EntityFrameworkCore.Metadata.IPropertyBase property, Func<System.Data.Common.DbDataReader,int[],T> getFieldValue);
public ReaderColumn (bool nullable, string? name, Microsoft.EntityFrameworkCore.Metadata.IPropertyBase? property, Func<System.Data.Common.DbDataReader,int[],T> getFieldValue);
new Microsoft.EntityFrameworkCore.Storage.ReaderColumn<'T> : bool * string * Microsoft.EntityFrameworkCore.Metadata.IPropertyBase * Func<System.Data.Common.DbDataReader, int[], 'T> -> Microsoft.EntityFrameworkCore.Storage.ReaderColumn<'T>
Public Sub New (nullable As Boolean, name As String, property As IPropertyBase, getFieldValue As Func(Of DbDataReader, Integer(), T))

参数

nullable
Boolean

一个值,该值指示列是否可为 null。

name
String

列的名称。

property
IPropertyBase

正在读取的属性(如果有),否则为 null。

getFieldValue
Func<DbDataReader,Int32[],T>

用于从读取器获取列的字段值的函数。

适用于