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RelationalModelBuilderExtensions.HasMaxIdentifierLength 方法

  • 參考

定義

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

設定存放區識別碼允許的最大長度。

public static Microsoft.EntityFrameworkCore.Metadata.Builders.IConventionModelBuilder HasMaxIdentifierLength (this Microsoft.EntityFrameworkCore.Metadata.Builders.IConventionModelBuilder modelBuilder, int? length, bool fromDataAnnotation = false);
public static Microsoft.EntityFrameworkCore.Metadata.Builders.IConventionModelBuilder? HasMaxIdentifierLength (this Microsoft.EntityFrameworkCore.Metadata.Builders.IConventionModelBuilder modelBuilder, int? length, bool fromDataAnnotation = false);
static member HasMaxIdentifierLength : Microsoft.EntityFrameworkCore.Metadata.Builders.IConventionModelBuilder * Nullable<int> * bool -> Microsoft.EntityFrameworkCore.Metadata.Builders.IConventionModelBuilder
<Extension()>
Public Function HasMaxIdentifierLength (modelBuilder As IConventionModelBuilder, length As Nullable(Of Integer), Optional fromDataAnnotation As Boolean = false) As IConventionModelBuilder

參數

modelBuilder
IConventionModelBuilder

模型產生器。

length
Nullable<Int32>

要設定的值。

fromDataAnnotation
Boolean

指出是否使用資料批註來指定組態。

傳回

IConventionModelBuilder

如果套用組態，則為相同的產生器實例， null 否則為 。

備註

如需詳細資訊和範例，請參閱 模型化實體類型和關聯 性。

適用於