DataObjectAttribute Class
Identifies a type as an object suitable for binding to an ObjectDataSource object. This class cannot be inherited.
Assembly: System (in System.dll)
| Name | Description | |
|---|---|---|
![]() | DataObjectAttribute() | Initializes a new instance of the DataObjectAttribute class. |
![]() | DataObjectAttribute(Boolean) | Initializes a new instance of the DataObjectAttribute class and indicates whether an object is suitable for binding to an ObjectDataSource object. |
| Name | Description | |
|---|---|---|
![]() | IsDataObject | Gets a value indicating whether an object should be considered suitable for binding to an ObjectDataSource object at design time. |
![]() | TypeId |
| Name | Description | |
|---|---|---|
![]() | Equals(Object) | Determines whether this instance of DataObjectAttribute fits the pattern of another object.(Overrides Attribute.Equals(Object).) |
![]() | GetHashCode() | Returns the hash code for this instance.(Overrides Attribute.GetHashCode().) |
![]() | GetType() | |
![]() | IsDefaultAttribute() | Gets a value indicating whether the current value of the attribute is the default value for the attribute.(Overrides Attribute.IsDefaultAttribute().) |
![]() | Match(Object) | When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.(Inherited from Attribute.) |
![]() | ToString() | Returns a string that represents the current object.(Inherited from Object.) |
| Name | Description | |
|---|---|---|
![]() ![]() | DataObject | Indicates that the class is suitable for binding to an ObjectDataSource object at design time. This field is read-only. |
![]() ![]() | Default | Represents the default value of the DataObjectAttribute class, which indicates that the class is suitable for binding to an ObjectDataSource object at design time. This field is read-only. |
![]() ![]() | NonDataObject | Indicates that the class is not suitable for binding to an ObjectDataSource object at design time. This field is read-only. |
| Name | Description | |
|---|---|---|
![]() ![]() | _Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr) | Maps a set of names to a corresponding set of dispatch identifiers.(Inherited from Attribute.) |
![]() ![]() | _Attribute.GetTypeInfo(UInt32, UInt32, IntPtr) | Retrieves the type information for an object, which can be used to get the type information for an interface.(Inherited from Attribute.) |
![]() ![]() | _Attribute.GetTypeInfoCount(UInt32) | Retrieves the number of type information interfaces that an object provides (either 0 or 1).(Inherited from Attribute.) |
![]() ![]() | _Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr) | Provides access to properties and methods exposed by an object.(Inherited from Attribute.) |
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 { public NorthwindData() {} [DataObjectMethodAttribute(DataObjectMethodType.Select, true)] public static IEnumerable GetAllEmployees() { AccessDataSource ads = 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); } // Delete the Employee by ID. [DataObjectMethodAttribute(DataObjectMethodType.Delete, true)] public void DeleteEmployeeByID(int employeeID) { throw new Exception("The value passed to the delete method is " + employeeID.ToString()); } }
Available since 2.0
Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.





