SubDocument.GetTextSpanAsync(Interval) Method
Gets the text span placed within the specified interval.
Namespace: DevExpress.Blazor.RichEdit
Assembly: DevExpress.Blazor.RichEdit.v21.2.dll
NuGet Package: DevExpress.Blazor.RichEdit
Declaration
public ValueTask<TextSpan> GetTextSpanAsync(
Interval interval
)
Parameters
Name | Type | Description |
---|---|---|
interval | Interval | A text span interval. |
Returns
Type | Description |
---|---|
ValueTask<TextSpan> | A structure that stores an awaitable result of an asynchronous operation. The awaitable result is the text span. |
Remarks
Call the ChangePropertiesAsync(Action<CharacterProperties>) method to change properties of the text span’s characters.
<DxRichEdit @ref="richEdit" />
@code {
DxRichEdit richEdit;
Document documentAPI;
@* ... *@
/* 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 cancelled. */
try {
documentAPI = richEdit.DocumentAPI;
@* ... *@
TextSpan characters = await documentAPI.AddTextAsync("New Text");
IReadOnlyList<Paragraph> paragraphs = await documentAPI.Paragraphs.GetAllAsync();
foreach (Paragraph p in paragraphs) {
TextSpan currentCharacters = await documentAPI.GetTextSpanAsync(p.Interval);
await currentCharacters.ChangePropertiesAsync(properties => {
properties.CopyFrom(characters);
});
}
@* ... *@
}
catch (OperationCanceledException e) {
Console.WriteLine($"{nameof(OperationCanceledException)} thrown with message: {e.Message}");
}
}
See Also