Type.IsLayoutSequential Property

 

Gets a value indicating whether the fields of the current type are laid out sequentially, in the order that they were defined or emitted to the metadata.

Namespace:   System
Assembly:  mscorlib (in mscorlib.dll)

abstract IsLayoutSequential : bool with get
override IsLayoutSequential : bool with get

Property Value

Type: System.Boolean

true if the Attributes property of the current type includes TypeAttributes.SequentialLayout; otherwise, false.

This property is provided as a convenience. Alternatively, you can use the TypeAttributes.LayoutMaskenumeration value to select the type layout attributes, and then test whether TypeAttributes.SequentialLayout is set. The TypeAttributes.AutoLayout, TypeAttributes.ExplicitLayout, and TypeAttributes.SequentialLayout enumeration values indicate the way the fields of the type are laid out in memory.

For dynamic types, you can specify TypeAttributes.SequentialLayout when you create the type. In code, apply the StructLayoutAttribute attribute with the LayoutKind.Sequential enumeration value to the type, to specify that layout is sequential.

System_CAPS_noteNote

You cannot use the GetCustomAttributes method to determine whether the StructLayoutAttribute has been applied to a type.

For more information, see section 9.1.2 of the specification for the Common Language Infrastructure (CLI) documentation, "Partition II: Metadata Definition and Semantics". The documentation is available online; see ECMA C# and Common Language Infrastructure Standards on MSDN and Standard ECMA-335 - Common Language Infrastructure (CLI) on the Ecma International Web site.

If the current Type represents a constructed generic type, this property applies to the generic type definition from which the type was constructed. For example, if the current Type represents MyGenericType<int> (MyGenericType(Of Integer) in Visual Basic), the value of this property is determined by MyGenericType<T>.

If the current Type represents a type parameter in the definition of a generic type or generic method, this property always returns false.

The following example creates an instance of a class for which the LayoutKind.Sequentialenumeration value in the StructLayoutAttribute class has been set, checks for the IsLayoutSequential property, and displays the result.

No code example is currently available or this language may not be supported.

.NET Framework
Available since 1.1
Windows Phone Silverlight
Available since 8.0
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