/// <summary>
/// 设置下载路径
/// </summary>
/// <returns></returns>
private string SetDirectory()
{
// 下载目录
string path;
// 弹出选择下载目录的窗口
path = DialogUtils.SetDownloadDirectory();
if (path == null || path == string.Empty)
{
return(null);
}
return(path);
}