void CancelTransfer(TransferHandle handle, bool warn = true)
{
if (warn && (handle.Status == TransferHandleStatus.Downloading || handle.Status == TransferHandleStatus.Uploading))
{
var type = (handle.Status == TransferHandleStatus.Downloading ? "download" : "upload");
var text = String.Format("Are you sure to cancel the {0} process for {1}?", type, handle.Node.Attributes.Name);
if (MessageBox.Show(text, "Cancel " + type, MessageBoxButton.YesNo) == MessageBoxResult.No)
{
return;
}
}
handle.CancelTransfer();
}