ThenBy Class

ThenBy Class

.NET Framework (current version)
 

Provides a way to apply a sort expression to an IQueryable data source object after an OrderByExpression expression is applied.

Namespace:   System.Web.UI.WebControls.Expressions
Assembly:  System.Web.Extensions (in System.Web.Extensions.dll)

System.Object
  System.Web.UI.WebControls.Expressions.ThenBy

public class ThenBy

NameDescription
System_CAPS_pubmethodThenBy()

Initializes a new instance of the ThenBy class.

NameDescription
System_CAPS_pubpropertyDataField

Gets or sets the property of the IQueryable object to apply the ThenBy expression to.

System_CAPS_pubpropertyDirection

Gets or sets the ordering direction of the IQueryable data source object.

NameDescription
System_CAPS_pubmethodEquals(Object)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_protmethodFinalize()

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_protmethodMemberwiseClone()

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

After a sort operation is performed by using the OrderByExpression expression in the QueryExtender control, subsequent sort operations can be performed by using the ThenBy class on a different data field.

The following example shows how to sort data by the ListPrice field in descending order and then on the ProductID field in ascending order using the ThenBy type. This code example is part of a larger example provided in Walkthrough: Filtering Data in a Web Page Using Declarative Syntax.

<asp:OrderByExpression DataField="ListPrice" 
    Direction="Descending">
  <asp:ThenBy DataField="ProductID" Direction="Ascending"/>
</asp:OrderByExpression>

.NET Framework
Available since 4.0

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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