Extends the System. RichTextBox control that represents a rich editing control which operates on FlowDocument objects. Document property. Text Formatters allows a user to format the content of the RichTextBox control into any format of their choice.

The RtfFormatter is the default Text Formatter. A user can create their own custom Text Formatter by creating a class that inherits from ITextFormatter and implementing the contract accordingly. When data binding to the Text property, you must use the Text Formatter that matches the format of the underlying data.

If your data is in plain text, you must use the PlainTextFormatter. This RichTextBox is bound to an object that has a Notes property.

richtextbox api

The value of the Notes property is as follows in the RTF format:. To create a custom formatter create a class that inherits from ITextFormatter and implement accordingly. When using the RichTextBox with buttons to change the styles of your text such as bold, italics, etc. Therefore, when you leave focus on the RichTextBox and start manipulating text with buttons, those changes will not be propagated property.

This is because by default, the source is not updated until the RichTextBox control loses focus. This will force any change to the text to be updated through data binding to the underlying data source.

Subscribe to RSS

Support this project, check out the Plus Edition. Skip to content. RichTextBox Jump to bottom. RichTextBox Derives from System. RichTextBox Extends the System. ContentStart, document. RtfFormatter is Default. Pages You signed in with another tab or window.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

The dark mode beta is finally here.

RichTextBox

Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information.

I know there are loads of "how to bolden text" questions on here, but none of the answers are helping, I think it may be that the Rich Text Box is being created at runtime.

richtextbox api

I want to bolden the name, I have tried many code examples, but this is the closest I've got to it working:. The first message, it works perfectly fine, the name is in bold. But when I add a second message, everything turns bold even though the second time round I'm selecting the start index Which is this example is 37 but everything just turns bold, all the past messages too! You are replacing the formatting and the text with this new version of a string, and is probably picking up the bold font from the last update.

You can also do underline, etc. I found it easier to build the String like this than applying properties. I feel it may be easier to use the RichTextBox.

Rtf property when performing this kind of action, as mentioned here:. Since as the contents of your text box grows, handling selection entities may end up becoming cumbersome. Learn more. Asked 6 years, 9 months ago. Active 3 months ago. Viewed 41k times. Length; textBox. Select length, roomChatMessage. Length ; textBox.

Font, FontStyle. Bold ; The first message, it works perfectly fine, the name is in bold. Any idea to what may cause this? Thanks in advance! Tom O Tom O 1, 2 2 gold badges 18 18 silver badges 40 40 bronze badges.How to change background color and foreground color of text in a RichTextBox.

How to load a text file in a RichTextBox control. Spelling check in a RichTextBox. The RichTextBox control in WPF allows you to view and edit text, paragraph, images, tables, and other rich text format contents. The Name property represents the name of the control, which is a unique identifier of a control.

The Margin property tells the location of a RichTextBox on the parent control. The HorizontalAlignment and VerticalAlignment properties are used to set horizontal and vertical alignments. The following code snippet sets the name, height, and width of a RichTextBox control. The code also sets horizontal alignment to left and vertical alignment to top.

Each item can be any flow content element. The following code snippet adds several items to a RichTextBox control. Figure 1. RichTextBox with editable text. We can also create and use a RichTextBox control dynamically using C. RichTextBox control comes with spelling check functionality out-of-box. Setting SpellCheck. IsEnabled property to true enables spell checking in a RichTextBox.

On this menu item click event handler, we call a method called LostTextDocument by passing the text file name. There is no direct method or property in RichTextBox that can extract the document or contents of a RichTextBox to a string.

Text property to convert it to a string. The following code snippet reads a RichTextBox contents from start to end and converts to a string.Represents a rich editing control which operates on FlowDocument objects. FlowDocument is the only supported child element for a RichTextBox.

If you need to respond to these events, listen for the tunneling PreviewMouseUp and PreviewMouseDown events instead, or register the handlers with the HandledEventsToo argument this latter option is only available through code. Do not mark the event handled unless you deliberately want to disable RichTextBox native handling of these events, and be aware that this has notable effects on the control's UI.

While RichTextBox supports copying and pasting of images, certain scenarios are currently unsupported and may not work properly. The following table summarizes these scenarios and expected results.

Text always wraps in a RichTextBox. However, once the page width is reached the text still wraps. Scrollbars are not visible on a RichTextBox by default. RichTextBox supports a variety of keyboard commands. For a list of keyboard commands, see EditingCommands. Dependency properties for this control might be set by the control's default style. If a property is set by a default style, the property might change from its default value when the control appears in the application.

The default style is determined by which desktop theme is used when the application is running. Initializes a new, default instance of the RichTextBox class. Initializes a new instance of the RichTextBox class, adding a specified FlowDocument as the initial content. Identifies the IsDocumentEnabled dependency property.

Gets or sets a value that indicates how the text editing control responds when the user presses the ENTER key. Gets or sets a value that indicates how the text editing control responds when the user presses the TAB key.

Gets or sets a value indicating whether this element can be used as the target of a drag-and-drop operation. This is a dependency property. Gets a value that indicates whether at least one touch is captured to this element or to any child elements in its visual tree.

Gets a value that indicates whether at least one touch is pressed over this element or any child elements in its visual tree. Gets or sets a value that determines whether when a user selects part of a word by dragging across it with the mouse, the rest of the word is selected. Gets or sets the BindingGroup that is used for the element. Gets or sets a bitmap effect that applies directly to the rendered content for this element. Gets or sets an input source for the bitmap effect that applies directly to the rendered content for this element.

Gets or sets a cached representation of the UIElement. Gets or sets the geometry used to define the outline of the contents of an element.

richtextbox api

Gets or sets a value indicating whether to clip the content of this element or content coming from the child elements of this element to fit into the size of the containing element.

Gets a collection of CommandBinding objects associated with this element. A CommandBinding enables command handling for this element, and declares the linkage between a command, its events, and the handlers attached by this element.

Gets or sets the context menu element that should appear whenever the context menu is requested through user interface UI from within this element. Gets or sets the key to use to reference the style for this control, when theme styles are used or defined.

Gets the Dispatcher this DispatcherObject is associated with. Gets or sets the bitmap effect to apply to the UIElement. Gets or sets the direction that text and other user interface UI elements flow within any parent element that controls their layout. Gets or sets a value that indicates whether the element can receive focus.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. RichTextFX provides a memory-efficient text area for JavaFX that allows the developer to style ranges of text, display custom objects in-line no more HTMLEditorand override the default behavior only where necessary without overriding any other part of the behavior.

It is intended as a base for rich-text editors and code editors with syntax highlighting. Since it is a base, a number of suggested features specific syntax highlighters, search-and-replace, specific support for hyperlinks, etc. Rather, developers can implement these on top of RichTextFX and submit their work as a PR to the richtextfx-demos package.

Stand-alone Applications that demonstrate some of the features of RichTextFX have been moved to their own folder here. The following explains the different rich text area classes. The first one is the base class from which all others extend: it needs further customization before it can be used but provides all aspects of the project's features. The later ones extend this base class in various ways to provide out-of-box functionality for specific use cases.

Most will use one of these subclasses. GenericStyledArea allows one to inline custom objects into the area alongside of text. As such, it uses generics and functional programming to accomplish this task in a completely type-safe way. Functional programming via lambdas specify how to apply styles, how to create a Node for a given segment, and how to operate on a given segment e.

GenericStyledArea is used in the Rich-text demo. StyledText is simply a text String and a style object S. You can define the style classes in your stylesheet. CodeArea is a variant of StyleClassedTextArea that uses a fixed width font by default, making it a convenient base for source code editors. CodeArea is used in the Java Keywords demo. Also, there's a heavy use of lambdas, defender methods and the stream API in the code base.

Current stable release is 0.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Skip to content. Permalink Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

Sign up. Branch: master. Find file Copy path. Cannot retrieve contributors at this time. Raw Blame History. Designer "System. RichTextBoxDesigner, System. Docking System. ClassInterface System. Text can be assigned directly to the control, or can be loaded from a rich text format RTF or plain text file.

The text within the control can be assigned character and paragraph formatting. To change the formatting of text, it must first be selected. Only selected text can be assigned character and paragraph formatting. Once a setting has been made to a selected section of text, all text entered after the selection is also formatted with the same settings until a setting change is made or a different section of the control's document is selected.

You can also use this property to change the size and typeface of the text. You can also load data from an already opened data stream. The example also requires that an RTF file is created, in the root of the C drive, containing the word "Text.

DesignerSerializationVisibility System. EditorBrowsable System. RefreshProperties System. While in this vertical display position, clicking on any part of a word will select all characters of the word regardless of the fact that the text is displayed vertically. BackgroundImage : System.

This property is not relevant to this class. BackgroundImageChanged : System. BackgroundImageLayout : System. BackgroundImageLayoutChanged : System.

This event is not relevant to this class. The default is zero. The paragraph will have the bullet style applied to it with the specified amount of indentation after the bullet. This property only affects the current paragraph within the control's text and the currently selected bullet in a list of bulleted items. CanPaste System. CanPaste : System. Paste System. ContentsResized : System. The following code example demonstrates the use of this member.The following code example creates a RichTextBox control that loads an RTF file into the control and searches for the first instance of the word "Text.

The example code finishes by adding the control to its Form. This example requires that the method created in the example code is added to a Form class and called from the constructor of the form.

The example also requires that an RTF file is created, in the root of the C drive, containing the word "Text. With the RichTextBox control, the user can enter and edit text.

The control also provides more advanced formatting features than the standard TextBox control. Text can be assigned directly to the control, or can be loaded from a rich text format RTF or plain text file. The text within the control can be assigned character and paragraph formatting. The RichTextBox control provides a number of properties you can use to apply formatting to any portion of text within the control.

To change the formatting of text, it must first be selected. Only selected text can be assigned character and paragraph formatting.

saveFileDialog and richTextBox تعلم برمجة سي شارب الدرس 11- محرر نصوص

Once a setting has been made to a selected section of text, all text entered after the selection is also formatted with the same settings until a setting change is made or a different section of the control's document is selected. The SelectionFont property enables you to make text bold or italic. You can also use this property to change the size and typeface of the text. The SelectionColor property enables you to change the color of the text.

To create bulleted lists you can use the SelectionBullet property. The RichTextBox control provides methods that provide functionality for opening and saving files. You can also load data from an already opened data stream.

Similar to the LoadFile method, you can also use the SaveFile method to save to an open data stream. The RichTextBox control also provides features for finding strings of text. The Find method is overloaded to find both strings of text as well as specific characters within the text of the control. You can also initialize the RichTextBox control to data stored in memory.

For example, you can initialize the Rtf property to a string that contains the text to display, including the RTF codes that determine how the text should be formatted. If the text within the control contains links, such as a link to a Web site, you can use the DetectUrls property to display the link appropriately in the control's text. You can then handle the LinkClicked event to perform the tasks associated with the link.

The SelectionProtected property enables you to protect text within the control from manipulation by the user. With protected text in your control, you can handle the Protected event to determine when the user has attempted to modify protected text, and either alert the user that the text is protected or provide the user with a standard way to manipulate the protected text.

Applications that already use TextBox controls can easily be adapted to make use of RichTextBox controls. The RichTextBox is typically used to provide text manipulation and display features similar to word processing applications such as Microsoft Word.

richtextbox api

The TextBoxBase. Undo method does not work with the KeyPress or TextChanged events. Initializes a new instance of the RichTextBox class.

Gets or sets a value indicating whether pressing the TAB key in a multiline text box control types a TAB character in the control instead of moving the focus to the next control in the tab order.

Using WPF RichTextBox using C# and XAML

Gets the AccessibleObject assigned to the control. Gets or sets the default action description of the control for use by accessibility client applications. Gets or sets the edges of the container to which a control is bound and determines how a control is resized with its parent.