public byte[] ShowEmpImage(int imgID) { dbClass db = new dbClass(); string sql = "SELECT LOGpdf FROM tableName WHERE LOGuid = @ID"; SqlCommand cmd = new SqlCommand(sql, db.con); cmd.CommandType = CommandType.Text; cmd.Parameters.AddWithValue("@ID", imgID); object img = null; try { db.Connect(); img = cmd.ExecuteScalar(); } catch { return(null); } finally { db.Disconnect(); } return((byte[])img); }