/// <summary>
/// 打开“选择目录”对话框，返回用户选择的路径
/// </summary>
/// <returns>成功则返回路径、失败则返回""</returns>
public static string GetSavePath(string tille = "choose", string defPath = "")
{
BrowseInfo browseInfo = new BrowseInfo();
browseInfo.displayName = new string(new char[256]);
browseInfo.title = tille;
browseInfo.flags = (int)BrowseFlag.BIF_RETURNONLYFSDIRS + (int)BrowseFlag.BIF_STATUSTEXT + (int)BrowseFlag.BIF_VALIDATE;
//browseInfo.flags = 0x00000010 | 0x00000002 | 0x00000001 | 0x00000040 | 0x00000080; //需查阅MSDN，根据需求添加
IntPtr a = LocalDialog.SHBrowseForFolder(browseInfo); //打开对话框，让用户选择
if (a != IntPtr.Zero)
{
byte[] path = new byte[256];
LocalDialog.SHGetPathFromIDList(a, path); //调用系统函数，解析结果并输出至path中
//将路径的中文乱码恢复正常（稍后再说）
Encoding utf8 = Encoding.UTF8;
byte[] utf8Bytes = Encoding.Convert(Encoding.Default, utf8, path);
string utf8String = utf8.GetString(utf8Bytes);
utf8String = utf8String.Replace("\0", "");
return(utf8String);
}
return("");
}
public static extern IntPtr SHBrowseForFolder([In, Out] BrowseInfo browse);