从mysql手动在c＃中增加id

Question

So I have make an order management system I have use this code to insert my order in data.

xconn.Open();
MySqlCommand cmd = new MySqlCommand();
cmd.CommandText = "insert into tblOrder  
(RegId,ItmId,quantity,Odrdate,Total) values ('" + label11.Text + "','" + 
26 + "','" + txt26.Text + "','" + date + "','" + lbltotal.Text + "');";
cmd.Connection = xconn;
cmd.ExecuteNonQuery();
xconn.Close();

So the order id in my table is auto increment but I want it to only increment after one order is complete.

Once I click total the odrid should increment so that next order gets a new id.

Answer 1

You simply can not insert a new row into a database table without a unique id, if the id is the primary key.

Why dont you introduce a new column „order_status“ in which you store the state of the current order?

Answer 2

Once I click total the odrid should increment so that next order gets a new id.

What if a orderId is exist for example you click on 993 and you want 994 but it's already exists in database.

As Other suggested you can put a column that have information regarding your +1. If you are using your current code in production your code can easily hacked using SQL-Injection be careful.