ASP.NET 根路径的获取
private string _ApplicationPath;
/// <summary>
/// 虚拟应用程序根路径
/// </summary>
public string ApplicationPath
{
get
{
_ApplicationPath = HttpContext.Current.Request.ApplicationPath;
if (_ApplicationPath.Length == 1)
{
_ApplicationPath = "";
}
return _ApplicationPath;
}
}
private string _CurrentPath;
/// <summary>
/// 当前的绝对路径
/// </summary>
public string CurrentPath
{
get
{
_CurrentPath = HttpContext.Current.Server.MapPath(".").ToLower();//当前的绝对路径(这里MapPath里的"."代表当前服务器)
if (_CurrentPath.Length == 1)
{
_CurrentPath = "";
}
return _CurrentPath;
}
}
private string _RootPath;
/// <summary>
/// 系统的根目录
/// </summary>
public string RootPath
{
get
{
_RootPath = HttpContext.Current.Server.MapPath(HttpContext.Current.Request.ApplicationPath).ToLower();//当前的绝对路径
if (_RootPath.Length == 1)
{
_RootPath = "";
}
return _RootPath;
}
}
/**//// <summary>
///
将Web站点下的绝对路径转换为相对于指定页面的虚拟路径
/// </summary>
/// <param name="page">当前页面指针，一般为this</param>
/// <param name="specifiedPath">绝对路径</param>
/// <returns>虚拟路径, 型如: http://www.cnblogs.com/</returns>
public static string ConvertSpecifiedPathToRelativePathForPage(Page page, string specifiedPath)
{
// 根目录虚拟路径
string virtualPath = page.Request.ApplicationPath;
// 根目录绝对路径
string pathRooted = HostingEnvironment.MapPath(virtualPath);
// 页面虚拟路径
string pageVirtualPath = page.Request.Path;
{
throw new Exception(string.Format("\"{0}\"是虚拟路径而不是绝对路径!", specifiedPath));
}
//(测试发现，pathRooted 在 VS2005 自带的服务器跟在IIS下根目录或者虚拟目录运行似乎不一样,
// 有此地方后面会加"\", 有些则不会, 为保险起见判断一下)
if (pathRooted.Substring(pathRooted.Length - 1, 1) == "\\")
{
specifiedPath = specifiedPath.Replace(pathRooted, "/");
}
else
{
specifiedPath = specifiedPath.Replace(pathRooted, "");
}
int pageNodesCount = pageNodes.Length - 2;
{
relativePath = "/.." relativePath;
}
{
// 如果存在 ".." , 则把最前面的 "/" 去掉
relativePath = relativePath.Substring(1, relativePath.Length - 1);
}
}
/**//// <summary>
/// 将Web站点下的绝对路径转换为虚拟路径
/// 注：非Web站点下的则不转换
/// </summary>
/// <param name="page">当前页面指针，一般为this</param>
/// <param name="specifiedPath">绝对路径</param>
/// <returns>虚拟路径, 型如: ~/</returns>
public static string ConvertSpecifiedPathToRelativePath(Page page, string specifiedPath)
{
string virtualPath = page.Request.ApplicationPath;
{
return specifiedPath;
}
{
specifiedPath = specifiedPath.Replace(pathRooted, "~/");
}
else
{
specifiedPath = specifiedPath.Replace(pathRooted, "~");
}
return relativePath;
}