DataSourceExpression Class (System.Web.UI.WebControls.Expressions)

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Classic
Lightweight
ScriptFree
.NET Framework Class Library
DataSourceExpression Class

Represents a base class for creating expression classes.

Inheritance Hierarchy
System.Object
  System.Web.UI.WebControls.Expressions.DataSourceExpression
    System.Web.DynamicData.ControlFilterExpression
    System.Web.DynamicData.DynamicFilterExpression
    System.Web.DynamicData.DynamicRouteExpression
    System.Web.UI.WebControls.Expressions.OfTypeExpression
    System.Web.UI.WebControls.Expressions.OrderByExpression
    System.Web.UI.WebControls.Expressions.ParameterDataSourceExpression

Namespace:  System.Web.UI.WebControls.Expressions
Assembly:  System.Web.Extensions (in System.Web.Extensions.dll)
Syntax
Visual Basic
Public MustInherit Class DataSourceExpression _
	Implements IStateManager
C#
public abstract class DataSourceExpression : IStateManager
Visual C++
public ref class DataSourceExpression abstract : IStateManager
F#
[<AbstractClass>]
type DataSourceExpression =  
    class
        interface IStateManager
    end

The DataSourceExpression type exposes the following members.

Constructors
  Name Description
Protected method DataSourceExpression Initializes a new instance of the DataSourceExpression class.
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Properties
  Name Description
Protected property Context Gets the HttpContext instance of the owner control.
Public property DataSource Gets the data source object that is associated with the owner control.
Protected property IsTrackingViewState Gets a value that indicates whether a data source expression object is tracking its view state changes.
Protected property Owner Gets the owner control.
Protected property ViewState Gets an instance of the StateBag class that contains the current view state information.
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Methods
  Name Description
Public method Equals(Object) Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected method Finalize Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public method GetHashCode Serves as a hash function for a particular type. (Inherited from Object.)
Public method GetQueryable Evaluates the DataSourceExpression instance using the IQueryable interface.
Public method GetType Gets the Type of the current instance. (Inherited from Object.)
Protected method LoadViewState Loads the state of the values in the DataSourceExpression object that must be persisted.
Protected method MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Protected method SaveViewState Saves the current view state of the DataSourceExpression object.
Public method SetContext Sets the HTTP context of the DataSourceExpression object that uses the specified owner control, HttpContext instance, and IQueryableDataSource object.
Public method SetDirty Marks the DataSourceExpression object so that its state will be saved in view state.
Public method ToString Returns a string that represents the current object. (Inherited from Object.)
Protected method TrackViewState Tracks view state changes of the DataSourceExpression object so that the changes can be stored in the StateBag object for the data source expression object.
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Explicit Interface Implementations
  Name Description
Explicit interface implemetation Private property IStateManager.IsTrackingViewState When implemented by a class, gets a value that indicates whether a data source expression object is tracking its view state changes.
Explicit interface implemetation Private method IStateManager.LoadViewState When implemented by a class, loads the previously saved view state of the data source expression object.
Explicit interface implemetation Private method IStateManager.SaveViewState When implemented by a class, saves the current view state of the DataSourceExpression object.
Explicit interface implemetation Private method IStateManager.TrackViewState When implemented by a class, tracks view state changes of the DataSourceExpression object so that the changes can be stored in the StateBag object for the data source expression object.
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Version Information

.NET Framework

Supported in: 4
Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, 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.
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
See Also

Reference

System.Web.UI.WebControls.Expressions Namespace

Other Resources

QueryExtender Web Server Control Overview