ASP.NET.in.a.Nutshell.Second.Edition [Electronic resources] نسخه متنی

This class provides shared helper methods that the design-time host
(IDE) can use to generate "dummy"
information for a sample rendering of a complex control. Typically,
this class is used with table controls, as maintaining a database
connection in design mode would be too resource-intensive, and the
data source provider may not even be available. Using the
CreateDummyDataTable( ) method, a default table is
created that uses no information from the actual data source. This
table could be used before a control's
DataSource property is set.

Visual Studio .NET can also use a minimum amount of information to
help present a design-time rendering of data tables. The
GetDataFields( ) and GetDataMembers(
) methods retrieve a basic amount of information about the
structure of the data source, which is then used when a dummy table
is created with CreateSampleDataTable( ). The
GetDesignTimeDataSource( ) method adds sample rows
into the specified data table control.

public sealed class 
DesignTimeData  {
// Public Static Fields
public static readonly EventHandler 
DataBindingHandler ;       // =System.EventHandler
// Public Static Methods
public static DataTable 
CreateDummyDataTable ( );
public static DataTable 
CreateSampleDataTable (System.Collections.IEnumerable 
referenceData );
public static PropertyDescriptorCollection 
GetDataFields (System.Collections.IEnumerable 
dataSource );
public static IEnumerable 
GetDataMember (System.ComponentModel.IListSource 
dataSource , string 
dataMember );
public static string[ ] 
GetDataMembers (object 
dataSource );
public static IEnumerable 
GetDesignTimeDataSource (System.Data.DataTable 
dataTable , int 
minimumRows );
public static IEnumerable 
GetSelectedDataSource (System.ComponentModel.IComponent 
component , 
string 
dataSource , string 
dataMember );
public static object 
GetSelectedDataSource (System.ComponentModel.IComponent 
component , string 
dataSource );
}