使用Server.MapPath（）和FileUpload.SaveAs（）进行文件上传

我有一个网站管理员部分，我正在忙着工作，它有4个FileUpload控件用于特定目的。 我需要知道，当我在FileUpload控件的SaveAs()方法中使用Server.MapPath()方法时，在我上传网站后它是否仍然可以在Web服务器上使用？ 据我所知， SaveAs()需要一个绝对路径，这就是我用Server.MapPath()映射路径的原因

 if (fuLogo.HasFile) //My FileUpload Control : Checking if a file has been allocated to the control { int counter = 0; //This counter Is used to ensure that no files are overwritten. string[] fileBreak = fuLogo.FileName.Split(new char[] { '.' }); logo = Server.MapPath("../Images/Logos/" + fileBreak[0] + counter.ToString()+ "." + fileBreak[1]); // This is the part Im wondering about. Will this still function the way it should on the webserver after upload? if (fileBreak[1].ToUpper() == "GIF" || fileBreak[1].ToUpper() == "PNG") { while (System.IO.File.Exists(logo)) { counter++; //Here the counter is put into action logo = Server.MapPath("../Images/Logos/" + fileBreak[0] + counter.ToString() + "." + fileBreak[1]); } } else { cvValidation.ErrorMessage = "This site does not support any other image format than .Png or .Gif . Please save your image in one of these file formats then try again."; cvValidation.IsValid = false; } if (fuLogo.PostedFile.ContentLength > 409600 ) //File must be 400kb or smaller { cvValidation.ErrorMessage = "Please use a picture with a size less than 400 kb"; cvValidation.IsValid = false; } else { if (fuLogo.HasFile && cvValidation.IsValid) { fuLogo.SaveAs(logo); //Save the logo if file exists and Validation didn't fail. The path for the logo was created by the Server.MapPath() method. } } } else { logo = "N/A"; } 

 Server.MapPath("~/Images/Logos/" + uploadedFileName); 

  FileUpload1.PostedFile.SaveAs(Server.MapPath(" ")+"\YourImageDirectoryOnServer\"+FileUpload1.FileName);