Why full imagepath isnot save in database

Hey i use linq to sql for store and retrive image from database ,i use varchar(max) datatype for it.
Here is my code for save image,

 
 EventBL r = new EventBL();
 r.Banner_SignUp_Page = System.IO.Path.GetFullPath(fuBanner.FileName);
 r.Insert();
 

and here is for retrive it.
  
var result1 = from a in db.EMR_INVITATIONs
  join b in db.EMR_EVENTs on a.EventID equals b.EventID
  where b.EventID == (int)Session["eventid"]


  select new
  {
  Banner = b.Banner_SignUp_Page,
  };

  var ev = result1.First();
 
  Image1.ImageUrl = ev.Banner;
 
 

but in database i found that whole path of image isn't store .
in database some of the path is stored,and i can't retrive image from database
If there is solution or improvement in my code
Then please let me know,
Thanks in advance.

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Thanks&Regards
ketan