Method RegisterFileDropTarget
RegisterFileDropTarget(ElementReference)
Registers a DOM element as a file drop target within the WebView2-based Blazor UI.
Declaration
Task RegisterFileDropTarget(ElementReference elementRef)Parameters
| Type | Name | Description |
|---|---|---|
| ElementReference | elementRef | A reference to the HTML element that should accept dropped files. |
Returns
| Type | Description |
|---|---|
| Task | A Task representing the asynchronous operation of enabling the file drop target. |
Remarks
This method typically invokes a JavaScript function (e.g., registerFileDropTarget) to
attach dragover and drop event listeners to the specified element. When files
are dropped onto the element, they are posted to the WebView2 host via
window.chrome.webview.postMessageWithAdditionalObjects.
The host application can handle these messages through the WebView2
CoreWebView2.WebMessageReceived event, receiving each file as a CoreWebView2File.
Requires WebView2 SDK version 1.0.1518.46 or later, which supports postMessageWithAdditionalObjects.
Examples
await RegisterFileDropTarget(myElementRef);