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Drag and Drop Feature

The Drag and Drop feature handles file drop events from the operating system. It lets you receive files dragged onto the window and filter by file extension.

Contents​

Enabling Drag and Drop​

Drag and drop is a runtime-only feature. Enable it after Build():

var window = InfiniFrameWindowBuilder.Create()
    .SetTitle("My App")
    .SetStartPageUrl("https://myapp.local")
    .Build();

// Enable with default settings (all file types)
window.EnableDragDrop();

Handling File Drops​

Register a handler to receive file drop events:

window.OnFileDropped((window, args) => {
    foreach (string filePath in args.FilePaths) {
        Console.WriteLine($"File dropped: {filePath}");
    }
});

The FileDroppedEventArgs contains the list of file paths that were dropped onto the window.

Extension Filtering​

Restrict which file types can be dropped:

// Enable with extension filter
window.EnableDragDrop(".png", ".jpg", ".gif");

// Or via feature interface
window.Features.DragDrop.SetEnabled(true);
window.Features.DragDrop.SetAllowedExtensions([".png", ".jpg", ".gif"]);

When extensions are set, only files matching those extensions trigger the drop event.

Runtime Control​

// Enable/disable
window.Features.DragDrop.SetEnabled(true);
window.Features.DragDrop.SetEnabled(false);

// Quick helpers
window.EnableDragDrop();
window.DisableDragDrop();

// Read current state
bool enabled = window.Features.DragDrop.IsEnabled;
IReadOnlyList<string> extensions = window.Features.DragDrop.AllowedExtensions;
note

Drag and drop is a runtime-only feature. There is no builder configuration for it you must enable it after Build().

See Also​