通过

RelationalModelBuilderExtensions.HasMaxIdentifierLength 方法

  • 参考

定义

命名空间:
Microsoft.EntityFrameworkCore
程序集:
Microsoft.EntityFrameworkCore.Relational.dll
包:
Microsoft.EntityFrameworkCore.Relational v3.0.0
包:
Microsoft.EntityFrameworkCore.Relational v3.1.0
包:
Microsoft.EntityFrameworkCore.Relational v5.0.0
包:
Microsoft.EntityFrameworkCore.Relational v6.0.0
包:
Microsoft.EntityFrameworkCore.Relational v7.0.0
包:
Microsoft.EntityFrameworkCore.Relational v8.0.0

配置存储标识符允许的最大长度。

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

参数

modelBuilder
IConventionModelBuilder

模型生成器。

length
Nullable<Int32>

要设置的值。

fromDataAnnotation
Boolean

指示是否使用数据注释指定配置。

返回

IConventionModelBuilder

如果应用了配置，则为同一生成器实例， null 否则为 。

注解

有关详细信息和示例，请参阅 为实体类型和关系建模 。

适用于