TableBuilder<TColumns>.Index Method (Expression<Func<TColumns, Object>>, String, Boolean, Boolean, Object)
Specifies an index to be created on the table. 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.
Assembly: EntityFramework (in EntityFramework.dll)
[SuppressMessageAttribute("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters")] [SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")] [SuppressMessageAttribute("Microsoft.Design", "CA1026:DefaultParametersShouldNotBeUsed")] public TableBuilder<TColumns> Index( Expression<Func<TColumns, object>> indexExpression, string name = null, bool unique = false, bool clustered = false, object anonymousArguments = null )
Parameters
- indexExpression
-
Type:
System.Linq.Expressions.Expression<Func<TColumns, Object>>
A lambda expression representing the property to be indexed. C#: t => t.PropertyOne VB.Net: Function(t) t.PropertyOne If multiple properties are to be indexed then specify an anonymous type including the properties. C#: t => new { t.PropertyOne, t.PropertyTwo } VB.Net: Function(t) New With { t.PropertyOne, t.PropertyTwo }
- name
-
Type:
System.String
The name of the index.
- unique
-
Type:
System.Boolean
A value indicating whether or not this is a unique index.
- clustered
-
Type:
System.Boolean
A value indicating whether or not this is a clustered index.
- anonymousArguments
-
Type:
System.Object
Additional arguments that may be processed by providers. Use anonymous type syntax to specify arguments e.g. 'new { SampleArgument = "MyValue" }'.
Return Value
Type: System.Data.Entity.Migrations.Builders.TableBuilder<TColumns>Itself, so that multiple calls can be chained.