error while debugging the project

Question

'String' does not contain a definition for GetFileName and no accessible extension method 'GetFileName' accepting a first argument of type 'string' could be found/are you missing a using directive or an assembly reference. I am getting error in GetFileName

[WebMethod]  
public static string DownloadFile(string Path)  
{  
  string str1 = Uri.UnescapeDataString(Path);  
  string fileName = Path.GetFileName(str1);  
  string str2 = "Result : " + DateTime.Now.ToString() + " - From Server";  
  FileInfo fileInfo = new FileInfo(HttpContext.Current.Server.MapPath("~/UploadFile/") + fileName);  
  HttpContext.Current.Response.ContentType = "APPLICATION/OCTET-STREAM";  
  HttpContext.Current.Response.AppendHeader("Content-Disposition", "Attachment; Filename=" + fileName);  
  HttpContext.Current.Response.WriteFile(str1);  
  HttpContext.Current.Response.End();  
  return "true";  
}  

Answer 1

The problem is you named the DownloadFile() method's input parameter "Path". Use the fully qualified name to get the file name.

System.IO.Path.GetFileName(str1);  

https://learn.microsoft.com/en-us/dotnet/api/system.io.path?view=net-6.0

Answer 2

DownloadFile (string Path)

As the error message clearly says, your variable "Path" is of type string and a string variable has no method GetFileName.

Answer 3

Hi @SathyanarayananAV ,
You just need to change the string Path to string path. The string you defined conflicts with the method name.

Best regards,
Lan Huang

---

If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.