Class ChangeEventArgs

Provides event arguments for the OnValueChange and Changed events.

Inheritance
System.Object
ChangeEventArgs
Namespace: Syncfusion.Blazor.QueryBuilder
Assembly: Syncfusion.Blazor.dll
Syntax
public class ChangeEventArgs : Object
Remarks

This class contains detailed information about changes to a rule, such as the new value, the rule's unique identifier, and whether the change can be canceled.

Constructors

ChangeEventArgs()

Declaration
public ChangeEventArgs()

Properties

Cancel

Gets or sets a value indicating whether to prevent the rule change from being applied.

Declaration
public bool Cancel { get; set; }
Property Value
Type Description
System.Boolean

true to cancel the rule change; otherwise, false.
Remarks

When this property is set to true, the pending change to the rule will be discarded, and the component's state will remain unchanged.

IsNewRule

Gets or sets a value indicating whether the rule is newly inserted.

Declaration
public bool IsNewRule { get; set; }
Property Value
Type Description
System.Boolean

true if the rule was just added; otherwise, false.
Remarks

This helps distinguish between newly created rules and modifications to existing ones.

Name

Gets or sets the name of the event that triggered the change.

Declaration
public string Name { get; set; }
Property Value
Type Description
System.String

A string that represents the name of the event.
Remarks

This property helps identify the origin of the change, such as a field, operator, or value modification.

Not

Gets or sets a value indicating whether the rule's condition is negated (e.g., using a "NOT" operator).

Declaration
public bool Not { get; set; }
Property Value
Type Description
System.Boolean

true if the rule is negated; otherwise, false.
Remarks

A negated rule inverts the logic of the condition, filtering for results that do not match the specified criteria.

RuleId

Gets or sets the unique identifier of the rule.

Declaration
public string RuleId { get; set; }
Property Value
Type Description
System.String

A string that represents the unique ID of the rule.
Remarks

This ID can be used to reference and manage the rule programmatically.

SelectedField

Gets or sets the field that was selected in the rule.

Declaration
public string SelectedField { get; set; }
Property Value
Type Description
System.String

A string representing the selected field.
Remarks

This property holds the name or identifier of the data field to which the rule is applied.

SelectedIndex

Gets or sets the index of the selected rule.

Declaration
public Nullable<int> SelectedIndex { get; set; }
Property Value
Type Description
System.Nullable<System.Int32>

An integer that represents the index of the rule within its group.
Remarks

This property is useful for identifying the position of the rule in the query structure.

Type

Gets or sets the type of the rule, typically indicating whether it's a rule or a group.

Declaration
public string Type { get; set; }
Property Value
Type Description
System.String

A string indicating the rule type.
Remarks

This helps differentiate between individual conditions and nested groups of conditions.

Value

Gets or sets the value associated with the rule.

Declaration
public dynamic Value { get; set; }
Property Value
Type Description
System.Object

A dynamic object representing the rule's value.
Remarks

The data type of the value depends on the field and operator selected for the rule.