ColumnBuilder.Binary 方法

参考

定义

命名空间:: System.Data.Entity.Migrations.Builders

程序集:: EntityFramework.dll

重要

一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。

重载

Binary(Nullable<Boolean>, Nullable<Int32>, Nullable<Boolean>, Byte[], String, Boolean, String, String, IDictionary<String,AnnotationValues>)

创建用于存储二进制数据的新列定义。

实体框架迁移 API 并非旨在接受不受信任的源 (（例如应用程序) 的最终用户）提供的输入。如果从此类源接受输入，则应先对其进行验证，然后再传递到这些 API，以防止 SQL 注入攻击等。

Binary(Nullable<Boolean>, Nullable<Int32>, Nullable<Boolean>, Nullable<Boolean>, Byte[], String, Boolean, String, String)

创建用于存储二进制数据的新列定义。

Binary(Nullable<Boolean>, Nullable<Int32>, Nullable<Boolean>, Byte[], String, Boolean, String, String, IDictionary<String,AnnotationValues>)

创建用于存储二进制数据的新列定义。

[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1026:DefaultParametersShouldNotBeUsed")]
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1822:MarkMembersAsStatic")]
public System.Data.Entity.Migrations.Model.ColumnModel Binary(Nullable<bool> nullable = null, Nullable<int> maxLength = null, Nullable<bool> fixedLength = null, byte[] defaultValue = null, string defaultValueSql = null, bool timestamp = false, string name = null, string storeType = null, System.Collections.Generic.IDictionary<string,System.Data.Entity.Infrastructure.Annotations.AnnotationValues> annotations = null);

member this.Binary : Nullable<bool> * Nullable<int> * Nullable<bool> * byte[] * string * bool * string * string * System.Collections.Generic.IDictionary<string, System.Data.Entity.Infrastructure.Annotations.AnnotationValues> -> System.Data.Entity.Migrations.Model.ColumnModel

Public Function Binary (Optional nullable As Nullable(Of Boolean) = null, Optional maxLength As Nullable(Of Integer) = null, Optional fixedLength As Nullable(Of Boolean) = null, Optional defaultValue As Byte() = null, Optional defaultValueSql As String = null, Optional timestamp As Boolean = false, Optional name As String = null, Optional storeType As String = null, Optional annotations As IDictionary(Of String, AnnotationValues) = null) As ColumnModel

参数

nullable: Nullable<Boolean>

指示列是否允许 null 值的值。

maxLength: Nullable<Int32>

允许的数组数据的最大长度。

fixedLength: Nullable<Boolean>

指示是否应将所有数据填充到最大长度的值。

defaultValue: Byte[]

用作此列的默认值的常量值。

defaultValueSql: String

用作此列的默认值的 SQL 表达式。

timestamp: Boolean

指示是否应将此列配置为时间戳的值。

name: String

列的名称。

storeType: String

要用于此列的提供程序特定数据类型。

annotations: IDictionary<String,AnnotationValues>

自定义批注通常来自 Code First 模型。

ColumnModel

新构造的列定义。

属性: SuppressMessageAttribute

适用于

Binary(Nullable<Boolean>, Nullable<Int32>, Nullable<Boolean>, Nullable<Boolean>, Byte[], String, Boolean, String, String)

创建用于存储二进制数据的新列定义。

public System.Data.Entity.Migrations.Model.ColumnModel Binary(Nullable<bool> nullable = null, Nullable<int> maxLength = null, Nullable<bool> fixedLength = null, Nullable<bool> isMaxLength = null, byte[] defaultValue = null, string defaultValueSql = null, bool timestamp = false, string name = null, string storeType = null);

member this.Binary : Nullable<bool> * Nullable<int> * Nullable<bool> * Nullable<bool> * byte[] * string * bool * string * string -> System.Data.Entity.Migrations.Model.ColumnModel

Public Function Binary (Optional nullable As Nullable(Of Boolean) = null, Optional maxLength As Nullable(Of Integer) = null, Optional fixedLength As Nullable(Of Boolean) = null, Optional isMaxLength As Nullable(Of Boolean) = null, Optional defaultValue As Byte() = null, Optional defaultValueSql As String = null, Optional timestamp As Boolean = false, Optional name As String = null, Optional storeType As String = null) As ColumnModel