DataObjectAttribute Class
Assembly: System (in system.dll)
'Declaration <AttributeUsageAttribute(AttributeTargets.Class)> _ Public NotInheritable Class DataObjectAttribute Inherits Attribute 'Usage Dim instance As DataObjectAttribute
/** @attribute AttributeUsageAttribute(AttributeTargets.Class) */ public final class DataObjectAttribute extends Attribute
AttributeUsageAttribute(AttributeTargets.Class) public final class DataObjectAttribute extends Attribute
Not applicable.
Use the DataObjectAttribute attribute to identify an object as suitable for use by an ObjectDataSource object. Design-time classes such as the ObjectDataSourceDesigner class use the DataObjectAttribute attribute to present suitable objects to bind to an ObjectDataSource object.
For more information about using attributes, see Extending Metadata Using Attributes.
The following code example demonstrates how you can apply the DataObjectAttribute attribute to indicate an object is suitable for binding to an ObjectDataSource object. In this example, the NorthwindData object is intended for use with an ObjectDataSource object.
<DataObjectAttribute()> _ Public Class NorthwindData <DataObjectMethodAttribute(DataObjectMethodType.Select, True)> _ Public Shared Function GetAllEmployees() As IEnumerable Dim ads As New AccessDataSource() ads.DataSourceMode = SqlDataSourceMode.DataReader ads.DataFile = "~/App_Data/Northwind.mdb" ads.SelectCommand = "SELECT EmployeeID,FirstName,LastName FROM Employees" Return ads.Select(DataSourceSelectArguments.Empty) End Function 'GetAllEmployees ' Delete the Employee by ID. <DataObjectMethodAttribute(DataObjectMethodType.Delete, True)> _ Public Sub DeleteEmployeeByID(ByVal employeeID As Integer) Throw New Exception("The value passed to the delete method is " + employeeID.ToString()) End Sub 'DeleteEmployeeByID End Class 'NorthwindData
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.