DxRichEdit.SaveDocumentAsync(CancellationToken) Method
Raises the DocumentContentChanged event.
Namespace: DevExpress.Blazor.RichEdit
Assembly: DevExpress.Blazor.RichEdit.v25.1.dll
NuGet Package: DevExpress.Blazor.RichEdit
Declaration
public ValueTask SaveDocumentAsync(
CancellationToken cancellationToken = default(CancellationToken)
)Optional Parameters
| Name | Type | Default | Description |
|---|---|---|---|
| cancellationToken | CancellationToken | null | An object that propagates a cancellation notification. |
Returns
| Type | Description |
|---|---|
| ValueTask | A structure that stores an awaitable result of an asynchronous operation. |
Remarks
The SaveDocumentAsync method raises the DocumentContentChanged event when one of the following conditions is met:
- An open document has unsaved changes
- The DocumentFormat property value was changed since the event’s previous occurrence.
The DocumentFormat property specifies a format in which the DocumentContent property stores content of an open document. Change the DocumentFormat property value and call the SaveDocumentAsync method to convert the document to another format and update the DocumentContent property value.
The following code snippet converts a document to another format and save the document to a file:
<DxRichEdit @ref="@richEdit" DocumentContent="@documentContent" DocumentFormat="@format"
DocumentContentChanged="OnDocumentContentChanged" />
@code {
byte[] documentContent;
DxRichEdit richEdit;
DocumentFormat format = DocumentFormat.Rtf;
protected override async Task OnInitializedAsync() {
/* 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 {
documentContent = await File.ReadAllBytesAsync("C:\\Users\\Public\\annual-report.rtf");
format = DocumentFormat.OpenXml;
await richEdit.SaveDocumentAsync();
await base.OnInitializedAsync();
}
catch (OperationCanceledException e) {
Console.WriteLine($"{nameof(OperationCanceledException)} thrown with message: {e.Message}");
}
}
async Task OnDocumentContentChanged(byte[] content) {
try {
documentContent = content;
await File.WriteAllBytesAsync("C:\\Users\\Public\\annual-report.docx", documentContent);
}
catch (OperationCanceledException e) {
Console.WriteLine($"{nameof(OperationCanceledException)} thrown with message: {e.Message}");
}
}
}