共用方式為

ProjectionBindingExpression 建構函式

  • 參考

定義

命名空間:
Microsoft.EntityFrameworkCore.Query
組件:
Microsoft.EntityFrameworkCore.dll
套件:
Microsoft.EntityFrameworkCore v3.0.0
套件:
Microsoft.EntityFrameworkCore v3.1.0
套件:
Microsoft.EntityFrameworkCore v5.0.0
套件:
Microsoft.EntityFrameworkCore v6.0.0
套件:
Microsoft.EntityFrameworkCore v7.0.0
套件:
Microsoft.EntityFrameworkCore v8.0.0

多載

ProjectionBindingExpression(Expression, IDictionary<IProperty,Int32>)

建立 ProjectionBindingExpression 類別的新執行個體。
ProjectionBindingExpression(Expression, IReadOnlyDictionary<IProperty,Int32>)
已淘汰.

建立 ProjectionBindingExpression 類別的新執行個體。
ProjectionBindingExpression(Expression, ProjectionMember, Type)

建立 ProjectionBindingExpression 類別的新執行個體。
ProjectionBindingExpression(Expression, Int32, Type)

建立 ProjectionBindingExpression 類別的新執行個體。

ProjectionBindingExpression(Expression, IDictionary<IProperty,Int32>)

建立 ProjectionBindingExpression 類別的新執行個體。

public ProjectionBindingExpression (System.Linq.Expressions.Expression queryExpression, System.Collections.Generic.IDictionary<Microsoft.EntityFrameworkCore.Metadata.IProperty,int> indexMap);
new Microsoft.EntityFrameworkCore.Query.ProjectionBindingExpression : System.Linq.Expressions.Expression * System.Collections.Generic.IDictionary<Microsoft.EntityFrameworkCore.Metadata.IProperty, int> -> Microsoft.EntityFrameworkCore.Query.ProjectionBindingExpression
Public Sub New (queryExpression As Expression, indexMap As IDictionary(Of IProperty, Integer))

參數

queryExpression
Expression

要從中取得值的查詢運算式。

indexMap
IDictionary<IProperty,Int32>

要與 ValueBuffer 之查詢運算式投影系結的索引對應。

適用於

ProjectionBindingExpression(Expression, IReadOnlyDictionary<IProperty,Int32>)

警告

The dictionary should be stored in client projection in query expression and access via index based binding.

建立 ProjectionBindingExpression 類別的新執行個體。

[System.Obsolete("The dictionary should be stored in client projection in query expression and access via index based binding.")]
public ProjectionBindingExpression (System.Linq.Expressions.Expression queryExpression, System.Collections.Generic.IReadOnlyDictionary<Microsoft.EntityFrameworkCore.Metadata.IProperty,int> indexMap);
[<System.Obsolete("The dictionary should be stored in client projection in query expression and access via index based binding.")>]
new Microsoft.EntityFrameworkCore.Query.ProjectionBindingExpression : System.Linq.Expressions.Expression * System.Collections.Generic.IReadOnlyDictionary<Microsoft.EntityFrameworkCore.Metadata.IProperty, int> -> Microsoft.EntityFrameworkCore.Query.ProjectionBindingExpression
Public Sub New (queryExpression As Expression, indexMap As IReadOnlyDictionary(Of IProperty, Integer))

參數

queryExpression
Expression

要從中取得值的查詢運算式。

indexMap
IReadOnlyDictionary<IProperty,Int32>

要與 ValueBuffer 之查詢運算式投影系結的索引對應。

屬性
ObsoleteAttribute

適用於

ProjectionBindingExpression(Expression, ProjectionMember, Type)

建立 ProjectionBindingExpression 類別的新執行個體。

public ProjectionBindingExpression (System.Linq.Expressions.Expression queryExpression, Microsoft.EntityFrameworkCore.Query.ProjectionMember projectionMember, Type type);
new Microsoft.EntityFrameworkCore.Query.ProjectionBindingExpression : System.Linq.Expressions.Expression * Microsoft.EntityFrameworkCore.Query.ProjectionMember * Type -> Microsoft.EntityFrameworkCore.Query.ProjectionBindingExpression
Public Sub New (queryExpression As Expression, projectionMember As ProjectionMember, type As Type)

參數

queryExpression
Expression

要從中取得值的查詢運算式。

projectionMember
ProjectionMember

要與查詢運算式系結的投影成員。

type
Type

要讀取之值的 clr 類型。

適用於

ProjectionBindingExpression(Expression, Int32, Type)

建立 ProjectionBindingExpression 類別的新執行個體。

public ProjectionBindingExpression (System.Linq.Expressions.Expression queryExpression, int index, Type type);
new Microsoft.EntityFrameworkCore.Query.ProjectionBindingExpression : System.Linq.Expressions.Expression * int * Type -> Microsoft.EntityFrameworkCore.Query.ProjectionBindingExpression
Public Sub New (queryExpression As Expression, index As Integer, type As Type)

參數

queryExpression
Expression

要從中取得值的查詢運算式。

index
Int32

要與查詢運算式投影系結的索引。

type
Type

要讀取之值的 clr 類型。

適用於