Can upload file with fileupload control but cannot access file

[Nii]

I can upload file (source below) but I cannot access it in browser (.docx): file or directory not found. what should I do\[code\]protected void Button1_Click(object sender, EventArgs e){ if (FileUpload1.HasFile) { try { string filename = Path.GetFileName(FileUpload1.FileName); FileUpload1.SaveAs(Server.MapPath("~/") + filename); Label1.Text = "Upload status: File uploaded!"; } catch (Exception ex) { Label1.Text = "Upload status: The file could not be uploaded. The following error occured: " + ex.Message; } }}\[/code\]