How to Get Selected Content in Blazor DOCX Editor

28 Aug 20264 minutes to read

You can get the selected content from the Blazor DOCX Editor (Document Editor) component as plain text or SFDT (rich text).

Get the selected content as plain text

You can use the GetTextAsync API to get the selected content as plain text from the Blazor DOCX Editor component.

The following example code illustrates how to add a “Search in Google” option to the context menu for the selected text.

@using Syncfusion.Blazor.DocumentEditor
@inject Microsoft.AspNetCore.Components.NavigationManager UriHelper
@inject IJSRuntime JSRuntime;

<SfDocumentEditorContainer @ref="container" Height="590px">
    <DocumentEditorContainerEvents Created="OnCreated" ContextMenuItemSelected="OnContentMenuSelect"></DocumentEditorContainerEvents>
</SfDocumentEditorContainer>

@code {
    SfDocumentEditorContainer container;

    public void OnCreated(object args)
    {
        SfDocumentEditor documentEditor = container.DocumentEditor;
        List<Syncfusion.Blazor.DocumentEditor.MenuItemModel> contentMenuItem = new List<Syncfusion.Blazor.DocumentEditor.MenuItemModel>
        {
           new Syncfusion.Blazor.DocumentEditor.MenuItemModel { Text="Search In Google", Id= "search_in_google", IconCss="e-icons e-de-ctnr-find" }
        };
        documentEditor.ContextMenu.AddCustomMenu(contentMenuItem, true, false);
    }

    public async Task OnContentMenuSelect(CustomContentMenuEventArgs args)
    {
        if (args.Id.EndsWith("search_in_google"))
        {
            // To get the selected content as plain text
            string selectedText = await container.DocumentEditor.Selection.GetTextAsync();
            string url = "http://google.com/search?q=" + selectedText;
            await JSRuntime.InvokeAsync<object>("open", new object[2] { url, "_blank" });
        }
    }
}

The following custom options can be added using this API:

Save or export the selected text as a text file.
Search the selected text in Google or other search engines.
Show synonyms for the selected word in the context menu and replace with the selected synonym using the setter method of the same API.

Get the selected content as SFDT (rich text)

You can use the GetSfdtAsync API to get the selected content as SFDT (rich text) from the Blazor DOCX Editor component.

The following example code illustrates how to get the content of a bookmark and export it as SFDT.

@using Syncfusion.Blazor.DocumentEditor

<SfDocumentEditorContainer @ref="container" EnableToolbar=true Height="590px">
    <DocumentEditorContainerEvents Created="OnLoad"></DocumentEditorContainerEvents>
</SfDocumentEditorContainer>

@code {
    SfDocumentEditorContainer container;
    string sfdtString;

    public async void OnLoad(object args)
    {
        // To insert text at the cursor position
        await container.DocumentEditor.Editor.InsertTextAsync("Document Editor");
        // To select all the content in the document
        await container.DocumentEditor.Selection.SelectAllAsync();
        // Insert bookmark to selected content
        await container.DocumentEditor.Editor.InsertBookmarkAsync("Bookmark1");
        // Select the bookmark
        await container.DocumentEditor.Selection.SelectBookmarkAsync("Bookmark1");
        // To get the selected content as SFDT
        string selectedContent = await container.DocumentEditor.Selection.GetSfdtAsync();
        // Insert the SFDT content at the cursor position using the PasteAsync API
        await container.DocumentEditor.Editor.PasteAsync(selectedContent);
    }
}