C1ExpressionEditor Class

The C1ExpressionEditor control is used to dynamically produce an expression and get the result of the expression. It supports DataBinding and integrates with controls which provide the ISupportExpressions interface. C1ExpressionEditor can also use field values of such control in expression string.

Inheritance

object

DispatcherObject

C1ExpressionEditor

Implements

IAnimatable

IFrameworkInputElement

Namespace: C1.WPF.ExpressionEditor

Assembly: C1.WPF.ExpressionEditor.4.6.2.dll

Syntax

[TemplatePart(Name = "ExpressionTextBox", Type = typeof(C1ExpressionRichTextBox))]
[TemplatePart(Name = "ExpressionErrorText", Type = typeof(TextBlock))]
public class C1ExpressionEditor : Control, IAnimatable, IFrameworkInputElement, IInputElement, ISupportInitialize, IQueryAmbient, IDisposable

<TemplatePart(Name:="ExpressionTextBox", Type:=GetType(C1ExpressionRichTextBox))>
<TemplatePart(Name:="ExpressionErrorText", Type:=GetType(TextBlock))>
Public Class C1ExpressionEditor
    Inherits Control
    Implements IAnimatable, IFrameworkInputElement, IInputElement, ISupportInitialize, IQueryAmbient, IDisposable

Constructors

Name	Description
C1ExpressionEditor()	Initializes a new instance of a C1ExpressionEditor.

Fields

Name	Description
DataSourceProperty	Identifies the DataSource dependency property.
ExpressionProperty	Identifies the Expression dependency property.
ItemContextProperty	Identifies the ItemContext dependency property.
ShowErrorBoxProperty	Identifies the ShowErrorBox dependency property.
SyntaxHighlightingProperty	Identifies the SyntaxHighlighting dependency property.
UnderlineErrorsProperty	Identifies the UnderlineErrors dependency property.

Properties

Name	Description
DataSource	Gets or sets the object used as the data source.
Expression	Gets or sets expression string.
InsertItem	Gets the ICommand object which performs insert operations.
IsValid	Gets value that indicates whether the expression is valid.
ItemContext	Gets or sets the object used as the context for evaluating an expression.
SelectedObject	Gets selected object of the support integrate.
ShowErrorBox	Gets or sets a value indicating whether to show errors.
SyntaxHighlighting	Gets or sets a value indicating whether to highlight syntax.
UnderlineErrors	Gets or sets a value indicating whether to underline errors.

Methods

Name	Description
AddAlias(string, string)	Adds an alias for a field from DataSource.
AddFunction(ExpressionItem, Func<List<object>, object>, int)	Added a custom function to engine of C1ExpressionEditor.
AddFunction(ExpressionItem, Func<List<object>, object>, int, int)	Added a custom function to engine of C1ExpressionEditor.
AddFunction(List<ExpressionItem>, Func<List<object>, object>, int, int)	Added a custom function to engine of C1ExpressionEditor.
Dispose()	Clean up any resources being used.
Dispose(bool)	Performs cleanup operations on managed and unmanaged resources.
Evaluate(int)	Gets result of the expression.
GetErrors()	Gets list of ErrorInfo objects.
OnApplyTemplate()	Builds the visual tree for the C1ExpressionEditor control when a new template is applied.
OnExpressionChanged(EventArgs)	Rises the ExpressionChanged event.
ResetEngine()	Resets a engine of C1ExpressionEditor to default.
SetCustomEngine(IEngine, IExpressionLexer)	Sets a custom engine to C1ExpressionEditor.
TryEvaluate(out object)	Gets a result of expression. A return value indicates whether the evaluate succeeded or failed.

Events

Name	Description
ExpressionChanged	Occurs when expression string changed.