Paragraph.AddToListAsync(List, Int32, CancellationToken) Method
Adds the paragraph to a list.
Namespace: DevExpress.Blazor.RichEdit
Assembly: DevExpress.Blazor.RichEdit.v24.2.dll
NuGet Package: DevExpress.Blazor.RichEdit
Declaration
public ValueTask<bool> AddToListAsync(
List list,
int listLevelIndex = 0,
CancellationToken cancellationToken = default(CancellationToken)
)
Parameters
Name | Type | Description |
---|---|---|
list | List | A list to which the paragraph is added. |
Optional Parameters
Name | Type | Default | Description |
---|---|---|---|
listLevelIndex | Int32 | 0 | A list level to which the paragraph is added. |
cancellationToken | CancellationToken | null | An object that propagates a cancellation notification. |
Returns
Type | Description |
---|---|
ValueTask<Boolean> | A structure that stores an awaitable result of an asynchronous operation. The awaitable result is |
Remarks
A list in a document is a series of paragraphs. Each paragraph contains information about the list (ListIndex) and the list level (ListLevelIndex) to which it belongs, if any.
Call the AddToListAsync
method to set the ListIndex and ListLevelIndex properties, apply a list format style to the paragraph, and add the paragraph to the list.
<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 canceled. */
try {
documentAPI = richEdit.DocumentAPI;
@* ... *@
List numberedList = await documentAPI.Lists.CreateAsync(ListType.Number);
await documentAPI.AddTextAsync("Paragraph 1");
Paragraph par1 = await documentAPI.Paragraphs.GetAsync(0);
await par1.AddToListAsync(numberedList);
Paragraph par2 = await documentAPI.Paragraphs.CreateAsync();
await documentAPI.AddTextAsync("Paragraph 2");
await par2.AddToListAsync(numberedList,1);
Paragraph par3 = await documentAPI.Paragraphs.CreateAsync();
await documentAPI.AddTextAsync("Paragraph 3");
await par3.AddToListAsync(numberedList,1);
Paragraph par4 = await documentAPI.Paragraphs.CreateAsync();
await documentAPI.AddTextAsync("Paragraph 4");
await par4.AddToListAsync(numberedList);
Paragraph par5 = await documentAPI.Paragraphs.CreateAsync();
await documentAPI.AddTextAsync("Paragraph 5");
await par5.AddToListAsync(numberedList);
@* ... *@
}
catch (OperationCanceledException e) {
Console.WriteLine($"{nameof(OperationCanceledException)} thrown with message: {e.Message}");
}
}
The image below shows the result.
Call the RemoveFromListAsync(CancellationToken) method to remove the paragraph from the list.
await par5.RemoveFromListAsync();