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RadListViewIsNullFilterExpression

Class

Class representing the "IsNull" filter expression extending the RadListViewSingleStringExpression.

Definition

Namespace:Telerik.Web.UI

Assembly:Telerik.Web.UI.dll

Syntax:

[Browsable(false)]
public class RadListViewIsNullFilterExpression : RadListViewFilterExpression, IStateManager, IEquatable<RadListViewFilterExpression>

Inheritance: objectRadListViewFilterExpressionRadListViewIsNullFilterExpression

Implements: IEquatable<RadListViewFilterExpression>IStateManager

Constructors

RadListViewIsNullFilterExpression(string)

Creates a instance of RadListViewIsNullFilterExpression class

[SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
public RadListViewIsNullFilterExpression(string fieldName)

Parameters:fieldNamestring

name of the field on which filter will be applied

Properties

FieldType

Type

Gets the type of the field

public override Type FieldType { get; }

Overrides: RadListViewFilterExpression.FieldType

FilterFunction

RadListViewFilterFunction

Gets the type of filter function

public override RadListViewFilterFunction FilterFunction { get; }

Overrides: RadListViewFilterExpression.FilterFunction

Methods

ToDynamicLinq()

Returns a string representation of the filter expression in format suitable for LinqDataSource usage.

public override string ToDynamicLinq()

Returns:

string

LinqDataSource string representation

Overrides: RadListViewFilterExpression.ToDynamicLinq()

Not intended for external usage

ToEntitySQL()

Returns a string representation of the filter expression in format suitable for EntityDataSource usage.

public override string ToEntitySQL()

Returns:

string

EntityDataSource string representation

Overrides: RadListViewFilterExpression.ToEntitySQL()

Not intended for external usage

ToOql()

Returns a string representation of the filter expression in format suitable for OpenAccessDataSource control usage.

public override string ToOql()

Returns:

string

OpenAccessDataSource string representation

Overrides: RadListViewFilterExpression.ToOql()

Not intended for external usage

ToPredicate()

Returns a representation of the current filter expression as a delegate

public override Predicate<object> ToPredicate()

Returns:

Predicate<object>

delegate's instance

Overrides: RadListViewFilterExpression.ToPredicate()

Not intended for external usage