Server.MapPath in C#
By Tan Lee Published on Nov 13, 2024 726
In C#, the Server.MapPath method was commonly used in ASP.NET Web Forms to convert a virtual path to a physical file system path on the server.
The ServerUtility
class is available as an instance through the HttpContext
in ASP.NET. It can be used when you are working within the ASP.NET request pipeline, as it's automatically accessible in web applications.
Using Server.MapPath in C#
For example:
System.Web.HttpContext.Current.Server.MapPath(virtualPath);//The virtual path you want to convert.
or you can also use HostingEnvironment.MapPath
System.Web.Hosting.HostingEnvironment.MapPath(virtualPath);
Using Server.MapPath to locate the correct directory.
To map a file in the root directory, you can use the Server.MapPath
method like this:
// server.mappath c# string fileName = Server.MapPath("~/App_Data/myfile.txt");
In ASP.NET Core, you use IWebHostEnvironment
to map paths.
For example:
public class BookController : Controller { private readonly IWebHostEnvironment _env; public MyController(IWebHostEnvironment env) { _env = env; } public IActionResult GetFile() { string path = Path.Combine(_env.WebRootPath, "images", "logo.png"); return File(System.IO.File.ReadAllBytes(path), "image/png"); } }
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