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DataObjectMethodType Enumeration

Identifies the type of data operation performed by a method, as specified by the DataObjectMethodAttribute applied to the method.

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

public enum DataObjectMethodType

Member nameDescription
Supported by the XNA FrameworkFillIndicates that a method is used for a data operation that fills a DataSet object.
Supported by the XNA FrameworkSelectIndicates that a method is used for a data operation that retrieves data.
Supported by the XNA FrameworkUpdateIndicates that a method is used for a data operation that updates data.
Supported by the XNA FrameworkInsertIndicates that a method is used for a data operation that inserts data.
Supported by the XNA FrameworkDeleteIndicates that a method is used for a data operation that deletes data.

The following code example demonstrates how you can apply the DataObjectMethodAttribute to a publicly exposed method and identify the type of data operation it performs as well as whether it is the type's default data method. In this example the NorthwindEmployee type exposes two different data methods: one to retrieve a set of data named GetAllEmployees, and one to delete data named DeleteEmployeeByID. The DataObjectMethodAttribute is applied to both methods.


[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());
  }
}


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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