How to add identity column to datatable using c#

Question

How to add identity column to datatable using c#. Im using Sql compact server.

Answer 1

I dont think its a good idea to use autoincrement on datatable if you are using insert and delete to a datatable because the number will not be rearranget, no final i will share a small idea how can we use autoincrement manual.

         DataTable dt = new DataTable();
        dt.Columns.Add("ID",typeof(int));
        dt.Columns.Add("Produto Nome", typeof(string));  

        dt.Rows.Add(null, "A");
        dt.Rows.Add(null, "B");
        dt.Rows.Add(null, "C");

        for(int i=0;i < dt.Rows.Count;i++)
        {
            dt.Rows[i]["ID"] = i + 1;
        }

always when finalizing the insert or delete must run this loop

         for(int i=0;i < dt.Rows.Count;i++)
        {
            dt.Rows[i]["ID"] = i + 1;
        }