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How to implement RtfText property for SfRichTextBoxAdv control?

Platform: UWP |

Control: SfRichTextBoxAdv

Tags: richtextboxadv, mvvm, rtf-text

You can bind Rtf text with SfRichTextBoxAdv content by implementing an extension class with RtfText property.

Please refer the following code samples.

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Comments

Koen Janssens

May 13, 2022

Hi,

I had to add a part to clear the textbox when the bound field was empty. Without this, when scrolling through a set of records of which a field is bound, the last non-empty value staid in the textbox.

        private void UpdateDocument(string rtfText)
        {
            // If Rtf text property is set internally means, skip updating the document.
            if (!skipUpdating && !string.IsNullOrEmpty(rtfText))
            {
                Stream stream = new MemoryStream();
                // Convert the Rtf string to byte array.
                byte[] bytes = Encoding.UTF8.GetBytes(rtfText);
                // Writes the byte array to stream.
                stream.Write(bytes, 0, bytes.Length);
                stream.Position = 0;
                //Load the Rtf stream.
                Load(stream, FormatType.Rtf);
            }
            else if (string.IsNullOrEmpty(rtfText))
            {

                Load(new MemoryStream(), FormatType.Rtf);
            }
        }

Premkumar Sundaramoorthy [Syncfusion]

May 16, 2022

Hi Koen,

From your code snippet and details we suspect that you want to clear the document content when the input/source RTF text is empty. So, you can use the NewDocument command. Please refer the below code snippet and API reference for more details.

code example

 private void UpdateDocument(string rtfText)
        {
            // If Rtf text property is set internally means, skip updating the document.
            if (!skipUpdating && !string.IsNullOrEmpty(rtfText))
            {
                Stream stream = new MemoryStream();
                // Convert the Rtf string to byte array.
                byte[] bytes = Encoding.UTF8.GetBytes(rtfText);
                // Writes the byte array to stream.
                stream.Write(bytes, 0, bytes.Length);
                stream.Position = 0;
                //Load the Rtf stream.
                Load(stream, FormatType.Rtf);
            }
            else if (string.IsNullOrEmpty(rtfText))
            {
                **this.NewDocumentCommand.Execute(null);**
            }
        }

new document command API reference

If your requirement is different, please share more details we will update you the appropriate solution.

Regards, Premkumar

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How to implement RtfText property for SfRichTextBoxAdv control?

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