ContentChangedEventArgs.Interval Property

Gets the sub-document‘s interval in which content was changed.

Namespace: DevExpress.Blazor.RichEdit

Assembly: DevExpress.Blazor.RichEdit.v23.2.dll

NuGet Package: DevExpress.Blazor.RichEdit

Declaration

public Interval Interval { get; }

Property Value

Type	Description
Interval	An object that stores the changed content’s length and position.

Remarks

You can access this event argument inside the ContentInserted and ContentRemoved event handlers. Depending on the event, the Interval property returns the sub-document‘s interval into which content was inserted or from which content was removed.

The example below demonstrates how you can obtain the inserted content and remove new images and text boxes from the document:

<DxRichEdit ContentInserted="OnContentInserted" />

@code {
    async void OnContentInserted(ContentChangedEventArgs args) {
        // Obtains the inserted content as a text span
        TextSpan textSpan = await args.SubDocument.GetTextSpanAsync(args.Interval);
        // Converts the inserted content to plain text
        string text = textSpan.Text;
        // Removes inserted images and text boxes
        for (int i = text.Length - 1; i >= 0; i--) {
            if (text[i] == '')
                await args.SubDocument.RemoveAsync(args.Interval.Start + i, 1);
        }
    }
}