Answered by : mohammad-ali-bb0q3g7ujzl0

Line 73: cmd1.Parameters.AddWithValue("@edate", edate);
Line 74: cmd1.Parameters.AddWithValue("@phone", phone);
Line 75: cmd1.ExecuteNonQuery();
Line 76: con.Close();
Line 77:

Source : https://social.msdn.microsoft.com/Forums/en-US/dd586755-5768-44ad-ba3c-ab508d34e89d/error-converting-data-type-nvarchar-to-numeric?forum=aspdatasourcecontrols | Last Update : Thu, 14 Jul 22