با سلام
اول کدهایی که استفاده کردم رو بگم
FileUpload1.PostedFile.SaveAs(HttpContext.Current. Server.MapPath("matn") + "\\" + FileUpload1.PostedFile.FileName);
و همچنین
FileUpload1.SaveAs(HttpContext.Current.Server.MapP ath("matn") + "\\" + FileUpload1.PostedFile.FileName);
و همچنین
FileUpload1.SaveAs(HttpContext.Current.Server.MapP ath("matn") + "\\" + FileUpload1.FileName);
که هر سه یه error ای مثل این میده
System.NotSupportedException: The given path's format is not supported. at System.Security.Util.StringExpressionSet.Canonical izePath(String path, Boolean needFullPath) at System.Security.Util.StringExpressionSet.CreateLis tFromExpressions(String[] str, Boolean needFullPath) at System.Security.Permissions.FileIOPermission.AddPa thList(FileIOPermissionAccess access, AccessControlActions control, String[] pathListOrig, Boolean checkForDuplicates, Boolean needFullPath, Boolean copyPathList) at System.Security.Permissions.FileIOPermission..ctor (FileIOPermissionAccess access, AccessControlActions control, String[] pathList, Boolean checkForDuplicates, Boolean needFullPath) at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy) at System.IO.FileStream..ctor(String path, FileMode mode) at System.Web.HttpPostedFile.SaveAs(String filename) at edit_items.Button1_Click(Object sender, EventArgs e)