Question

I want to store the result of select query in an array in C#. Please tell me how to get datatable values and store in an array. My select query result contains n rows and only one column.

Answer 1

Try something like this

 private void getData()
        {
            SqlCeConnection conn = new SqlCeConnection("data source='c:\\northwind.sdf'; mode=Exclusive;");
            SqlCeDataAdapter da = new SqlCeDataAdapter("Select [Unit Price] from Products", conn);
            DataTable dtSource = new DataTable();
            da.Fill(dtSource);
            DataRow[] dr = new DataRow[dtSource.Rows.Count];
            dtSource.Rows.CopyTo(dr, 0);
            double[] dblPrice= Array.ConvertAll(dr, new Converter<DataRow , Double>(DataRowToDouble));

        }

        public static double DataRowToDouble(DataRow dr)
        {
            return Convert.ToDouble(dr["Unit Price"].ToString());
        }