conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=E:\\database.mdb");
conn.Open();

com = new OleDbCommand(@"insert into group
                          (groupid,groupname,nature,effect) 
                         values 
                          (@groupid,@groupname,@nature,@effect)", conn);
com.Parameters.AddWithValue("@groupid", intialtxt);
com.Parameters.AddWithValue("@groupname", groupnametxt);
com.Parameters.AddWithValue("@nature", groupnaturecombo);
com.Parameters.AddWithValue("@effect", efectivegroupcombo);
com.ExecuteNonQuery();

conn.Close()

i have write this connection ,but i get one error Syntax error in INSERT INTO statement please someone help me.