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updating data after printing it in DB

Member 9702410 asked:

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i want to update data after printing it .
for example if admin enter :

previous account=30
added account=40
then:
total account=70

the result will be stored in DB(total account=70) and also will be printed in gridview

but actually after printing ,i want to update previous account=70
how can i do this

SqlConnection con = new SqlConnection(@"");
            SqlCommand command = new SqlCommand();
            command.Connection = con;
            command.CommandText = "update customer set   jj=@a where jj=@d";
            command.Parameters.AddWithValue("@d",name);
            command.Parameters.AddWithValue("@a",total);
            try
            {
                con.Open();
                int i = command.ExecuteNonQuery();
                if (i > 0)
                    con.Close();

            }
            catch(Exception ex)
            {
                throw(ex);
            }
        }
Tags: C#

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