SubDocument.GetHtmlAsync(Int32, Int32, CancellationToken) Method
In This Article
Returns the specified interval’s content in HTML format. The interval is specified by its start position and length.
Namespace: DevExpress.Blazor.RichEdit
Assembly: DevExpress.Blazor.RichEdit.v24.2.dll
NuGet Package: DevExpress.Blazor.RichEdit
#Declaration
C#
public ValueTask<string> GetHtmlAsync(
int startPosition,
int length,
CancellationToken cancellationToken = default(CancellationToken)
)
#Parameters
Name | Type | Description |
---|---|---|
start |
Int32 | The interval’s start position. |
length | Int32 | The interval’s length. |
#Optional Parameters
Name | Type | Default | Description |
---|---|---|---|
cancellation |
Cancellation |
null | An object that propagates a cancellation notification. |
#Returns
Type | Description |
---|---|
Value |
A structure that stores an awaitable result of an asynchronous operation. The awaitable result is an HTML text string. |
#Remarks
The following code snippet performs the following steps:
- Handles the DocumentLoaded event to access content of the loaded document.
- Calls the
GetHtmlAsync
method that obtains the first ten letters from the main sub-document and generates the corresponding HTML markup. - Saves the obtained markup to the
target-html.html
file.
Razor
<DxRichEdit @ref="@richEdit"
DocumentContent="@documentContent"
DocumentLoaded="OnDocumentLoaded"/>
@code {
DxRichEdit richEdit { get; set; }
Byte[] documentContent { get; set; }
string htmlContent { get; set; }
string pathInitial { get; set; } = @"C:\Temp\initial.docx";
string pathHtml { get; set; } = @"C:\Temp\target-html.html";
protected override async Task OnInitializedAsync() {
documentContent = await File.ReadAllBytesAsync(pathInitial);
await base.OnInitializedAsync();
}
async Task OnDocumentLoaded(Document document) {
try {
var htmlContent = await document.GetHtmlAsync(0, 10);
await File.WriteAllTextAsync(pathHtml, htmlContent);
}
catch (OperationCanceledException e) {
Console.WriteLine($"{nameof(OperationCanceledException)} thrown with message: {e.Message}");
}
}
}
See Also