Document Class
A document in the Rich Text Editor.
Namespace: DevExpress.Blazor.RichEdit
Assembly: DevExpress.Blazor.RichEdit.v23.2.dll
NuGet Package: DevExpress.Blazor.RichEdit
Declaration
public class Document :
SubDocumentRelated API Members
The following members return Document objects:
Remarks
The Document class combines the document’s common and the main sub-document‘s functionalities.
How to Process a Batch of Changes in the Document without Intermediate Updates
Enclose your code in the BeginUpdate(Boolean) - EndUpdate() method calls to suppress the RichEdit’s visual updates and improve its performance when you make multiple changes to a document.
Each call to BeginUpdate(Boolean) should be paired with the EndUpdate() call. The BeginUpdate(Boolean) method locks the component to prevent it from re-rendering after each modification. The EndUpdate() method unlocks the control to apply all changes.
<DxRichEdit @ref="richEdit" />
@code {
DxRichEdit richEdit;
protected override Task OnAfterRenderAsync(bool firstRender) {
if (firstRender)
InitializeDocument();
return base.OnAfterRenderAsync(firstRender);
}
async void InitializeDocument() {
/* Surround the code that contains an asynchronous operation with a try-catch block to handle
the OperationCanceledException. This exception is thrown when an asynchronous operation is canceled. */
try {
richEdit.DocumentAPI.BeginUpdate();
IReadOnlyList<Paragraph> paragraphs = await richEdit.DocumentAPI.Paragraphs.GetAllAsync();
foreach (Paragraph p in paragraphs)
await p.ChangePropertiesAsync(properties => {/*...*/});
richEdit.DocumentAPI.EndUpdate();
}
catch (OperationCanceledException e) {
Console.WriteLine($"{nameof(OperationCanceledException)} thrown with message: {e.Message}");
}
}
}
Structural Elements
A Document object provides access to structural elements contained in the main sub-document. Use the following properties to access a specific element’s collection:
- Bookmarks - provides access to a collection of Bookmark objects.
- Fields - provides access to a collection of Field objects.
- Hyperlinks - provides access to a collection of Hyperlink objects.
- Images - provides access to a collection of Image objects.
- InlineImages - provides access to a collection of InlineImage objects.
- Paragraphs - provides access to a collection of Paragraph objects.
Sections - provides access to a collection of Section objects.
Use the Lists property to access a collection of the document’s List objects.