DbMigration.AlterTableAnnotations<TColumns> Method (String, Func<ColumnBuilder, TColumns>, IDictionary<String, AnnotationValues>, Object)

 

Adds an operation to handle changes in the annotations defined on tables. Entity Framework Migrations APIs are not designed to accept input provided by untrusted sources (such as the end user of an application). If input is accepted from such sources it should be validated before being passed to these APIs to protect against SQL injection attacks etc.

Namespace:   System.Data.Entity.Migrations
Assembly:  EntityFramework (in EntityFramework.dll)

[SuppressMessageAttribute("Microsoft.Design", "CA1026:DefaultParametersShouldNotBeUsed")]
protected internal void AlterTableAnnotations<TColumns>(
	string name,
	Func<ColumnBuilder, TColumns> columnsAction,
	IDictionary<string, AnnotationValues> annotations,
	object anonymousArguments = null
)

Parameters

name
Type: System.String

The name of the table. Schema name is optional, if no schema is specified then dbo is assumed.

columnsAction
Type: System.Func<ColumnBuilder, TColumns>

An action that specifies the columns to be included in the table. i.e. t =&gt; new { Id = t.Int(identity: true), Name = t.String() }

annotations
Type: System.Collections.Generic.IDictionary<String, AnnotationValues>

The custom annotations on the table that have changed.

anonymousArguments
Type: System.Object

The additional arguments that may be processed by providers. Use anonymous type syntax to specify arguments e.g. 'new { SampleArgument = "MyValue" }'.

Type Parameters

TColumns

The columns in this operation. You do not need to specify this type, it will be inferred from the columnsAction parameter you supply.