# MarkdownEditorLegacy **Also known as:** MdEditor ## Description BitMarkdownEditorLegacy is a simple markdown editor like the GitHub editor. ## Parameters | Name | Type | Default Value | Description | | :--- | :--- | :------------ | :---------- | | DefaultValue | `string?` | null | The default text value of the editor to use at initialization. | | OnChange | `EventCallback<string?>` | | Callback for when the editor value changes. | | Value | `string?` | null | The two-way bound text value of the editor. | | AriaLabel | `string?` | null | Gets or sets the accessible label for the component, used by assistive technologies. | | Class | `string?` | null | Gets or sets the CSS class name(s) to apply to the rendered element. | | Dir | `BitDir?` | null | Gets or sets the text directionality for the component's content. | | HtmlAttributes | `Dictionary<string, object>` | new Dictionary<string, object>() | Captures additional HTML attributes to be applied to the rendered element, in addition to the component's parameters. | | Id | `string?` | null | Gets or sets the unique identifier for the component's root element. | | IsEnabled | `bool` | true | Gets or sets a value indicating whether the component is enabled and can respond to user interaction. | | Style | `string?` | null | Gets or sets the CSS style string to apply to the rendered element. | | TabIndex | `string?` | null | Gets or sets the tab order index for the component when navigating with the keyboard. | | Visibility | `BitVisibility` | BitVisibility.Visible | Gets or sets the visibility state (visible, hidden, or collapsed) of the component. | ## Public Members | Name | Type | Default Value | Description | | :--- | :--- | :------------ | :---------- | | GetValue | `Func<ValueTask<string>>` | | Returns the current value of the editor. | | Run | `Func<BitMarkdownEditorLegacyCommand, ValueTask>` | | Runs a specific command on the editor. | | Add | `Func<string, BitMarkdownEditorLegacyContentType, ValueTask>` | | Adds a specific content to the editor. | | UniqueId | `Guid` | Guid.NewGuid() | Gets the readonly unique identifier for the component's root element, assigned when the component instance is constructed. | | RootElement | `ElementReference` | | Gets the reference to the root HTML element associated with this component. | ## Enums ### BitMarkdownEditorLegacyCommand Enum | Name | Value | Description | | :--- | :--- | :---------- | | Heading | 0 | Makes the current line a heading. | | Bold | 1 | Makes the current selection text bold. | | Italic | 2 | Makes the current selection text italic. | | Link | 3 | Makes the current selection text a link. | | Picture | 4 | Makes the current selection text an image. | | Quote | 5 | Makes the current selection text a quote message. | | Code | 6 | Makes the current selection text a code phrase. | | CodeBlock | 7 | Makes the current selection text a code block. | ### BitMarkdownEditorLegacyContentType Enum | Name | Value | Description | | :--- | :--- | :---------- | | Inline | 0 | Inline content type. | | Block | 1 | Block content type. | | Wrap | 2 | Wrap content type. | ### BitVisibility Enum | Name | Value | Description | | :--- | :--- | :---------- | | Visible | 0 | The content of the component is visible. | | Hidden | 1 | The content of the component is hidden, but the space it takes on the page remains (visibility:hidden). | | Collapsed | 2 | The component is hidden (display:none). | ### BitDir Enum | Name | Value | Description | | :--- | :--- | :---------- | | Ltr | 0 | Ltr (left to right) is to be used for languages that are written from the left to the right (like English). | | Rtl | 1 | Rtl (right to left) is to be used for languages that are written from the right to the left (like Arabic). | | Auto | 2 | Auto lets the user agent decide. It uses a basic algorithm as it parses the characters inside the element until it finds a character with a strong directionality, then applies that directionality to the whole element. | ## Examples \n**Basic**: ```razor ``` \n**GetValue**: ```razor ``` ```csharp private BitMarkdownEditorLegacy editorRef = default!; private string? value; private async Task GetValue() { value = await editorRef.GetValue(); } ``` \n**OnChange**: ```razor ``` ```csharp private string? onChangeValue; ``` \n**Binding**: ```razor