SizeAttribute(Int32) Constructor

Initializes a new instance of the SizeAttribute class.

Namespace: DevExpress.Xpo

Assembly: DevExpress.Xpo.v24.2.dll

Declaration

C#

public SizeAttribute(
    int size
)

VB.NET

Public Sub New(
    size As Integer
)

Parameters

Name	Type	Description
size	Int32	An integer value which specifies the maximum number of characters that can be stored. This value is assigned to the SizeAttribute.Size property.

Example

The following example applies the SizeAttribute to the FullName and Background properties. The maximum number of characters that can be stored in a database column which the FullName property is mapped to is 128. As for the Background property the unlimited size of the column it is mapped to is specified.

C#

using DevExpress.Xpo;

class Customer : XPObject {
    private string fullName;
    private string background;

    [Size(128)]
    public string FullName {
        get { return fullName; }
        set { SetPropertyValue<string>(nameof(FullName), ref fullName, value); }
    }

    [Size(SizeAttribute.Unlimited)]
    public string Background {
        get { return background; }
        set { SetPropertyValue<string>(nameof(Background), ref background, value); }
    }
}

VB.NET

Imports DevExpress.Xpo

Class Customer
   Inherits XPObject
   Private _FullName As String
   Private _Background As String

   <Size(128)> _
   Public Property FullName() As String
      Get
         Return _FullName
      End Get
      Set(ByVal Value As String)
         SetPropertyValue(Of String)(NameOf(FullName), _FullName, Value)
      End Set
   End Property

   <Size(SizeAttribute.Unlimited)> _
   Public Property Background() As String
      Get
         Return _Background
      End Get
      Set(ByVal Value As String)
         SetPropertyValue(Of String)(NameOf(Background), _Background, Value)
      End Set
   End Property
End Class

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the SizeAttribute(Int32) constructor.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

how-to-bind-wpf-grid-to-data/CS/CodeBehind/XPO/InfiniteAsyncSource/Issues/Issue.cs#L10

string _Subject;
[Size(200)]
public string Subject {

wpf-data-grid-implement-crud-operations/CS/CodeBehind/XPO/LocalData/Issues/Issue.cs#L10

string _Subject;
[Size(200)]
public string Subject {

CriteriaOperatorsCheatSheet/CS/CriteriaOperatorCheatSheet/BusinessObjects/Position.cs#L15

[Size(SizeAttribute.DefaultStringMappingFieldSize)]
public string PositionName {

XPO_how-to-implement-odata4-service-with-xpo/CS/ODataService/Models/Customers.cs#L16

[Key]
[Size(5)]
[Nullable(false)]

winforms-scheduler-bind-xpo-multi-resource-appointments/CS/XPO_MultiResource_Example/XPResource.cs#L11

public int ResId;
[Size(SizeAttribute.Unlimited)]  // !!! To set the Memo field type.
public string Name;              // Resource.Caption

VB.NET

how-to-bind-wpf-grid-to-data/VB/CodeBehind/XPO/InfiniteAsyncSource/Issues/Issue.vb#L14

<Size(200)>
Public Property Subject As String

winforms-scheduler-bind-xpo-multi-resource-appointments/VB/XPO_MultiResource_Example/XPResource.vb#L15

Public ResId As Integer
<Size(SizeAttribute.Unlimited)>
Public Name As String ' Resource.Caption -  !!! To set the Memo field type.

winforms-scheduler-bind-to-xpo/VB/XPO_XtraScheduler_Simple_Example/XPResource.vb#L15

Public ResId As Integer
<Size(SizeAttribute.Unlimited)> _
Public Name As String ' Resource.Caption -  !!! To set the Memo field type.

winforms-filtercontrol-implement-ifilteredcomponent/VB/Q200298/Northwind.vb#L24

<Size(15), DisplayName("Name")>
Public Property CategoryName As String

XAF_Non-Persistent-Objects-Nested-In-Persistent-Objects-Demo/VB/NonPersistentObjectsDemo.Module/BusinessObjects/CollectionStoredSeparately/Epoch.vb#L49

<Browsable(False)>
<Size(SizeAttribute.Unlimited)>
Public Property TechnologyList() As String