DataTable 设置自增列

dataTable dt=new dataTable();
dataColumn colNumber=new dataColumn();

            colNumber.AutoIncrement = true;//设置是否为自增列
            colNumber.AutoIncrementSeed = 1;//设置自增初始值
            colNumber.AutoIncrementStep = 1;//设置每次子增值

dt.Columns.Add(colNumber);