DataObjectMethodType Enumeration
[This documentation is for preview only, and is subject to change in later releases. Blank topics are included as placeholders.]
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)
| Member name | Description | |
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Fill | Indicates that a method is used for a data operation that fills a DataSet object. |
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Select | Indicates that a method is used for a data operation that retrieves data. |
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Update | Indicates that a method is used for a data operation that updates data. |
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Insert | Indicates that a method is used for a data operation that inserts data. |
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Delete | Indicates 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()); } }
Windows 8 Consumer Preview, Windows Server 8 Beta, Windows 7, Windows Server 2008 SP2, Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
